Interview questions
for every round.

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Use present → past → proof → future in 60–90 seconds: “I’m a 2026 B.Tech CSE graduate focused on testing. In my final-year project I wrote 120 test cases and automated login checks with Selenium. I want to start my career as a QA engineer in a product team like yours.”

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Connect their work to your skills and goals: “You build logistics software for UAE and UK clients. I tested a delivery-tracking app in my project and your team uses Selenium and Jira, which I already know.”

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Match 2–3 must-haves from the JD with proof, then add attitude: “I already know manual testing, Jira and SQL, I’ve automated basic flows, and I learn quickly — I picked up Postman in a week for my project.”

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Pick one or two relevant strengths and prove each with a short example. Avoid a list of adjectives.

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Give a real but non-critical weakness and what you are doing about it: “I used to take on too much without asking for help. Now I timebox problems and ask after 30 minutes.”

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Show ambition aligned with the company: “Growing into a senior engineer who owns features end to end and mentors juniors.” Avoid saying you plan to leave.

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Give a genuine reason with a moment that sparked interest — a project, a course, an internship — and what you enjoy about the work.

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Be honest, show improvement and redirect to strengths: “My first-year grades were low while I adjusted; I improved to 7.6 in later semesters and focused on hands-on projects.”

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Answer clearly and honestly. If yes, say yes. If partly, say what you can do: “I can relocate to Kochi; I prefer day shift but can manage rotational shifts.”

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If not soon, say so: “Not in the near future. I want industry experience first; any learning will be part-time and related to my work.”

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Stay positive and forward-looking: growth, scale, learning, domain. Never criticise your employer or manager.

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State current CTC accurately (fixed and variable separately) and give a researched expected range: “₹6.2 LPA fixed; I’m expecting ₹8–8.5 LPA based on the role and market.”

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Give the exact number of days and whether early release or buyout is possible. Don’t promise what you can’t deliver.

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Be truthful. If yes: “I have one offer, but this role is my preference because of the product work.” Never invent an offer.

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Give brief, factual reasons (project closure, relocation, growth) and show you are looking for stability now.

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Brief reason plus what you did productively: courses, certifications, projects, family responsibilities. Keep it honest and short.

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Explain your method — prioritise, break work into steps, communicate early — and give one real example with a result.

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Mention what they do, key products or clients, size, location and something recent (news, launch). Shows you researched.

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Always ask 2–3: “What does success look like in the first 90 days?”, “How is the team structured?”, “What are the next steps?”

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Ask for the details before committing: duration, amount and what it covers. Agree only after reading the terms in writing.

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STAR example where you contributed and helped others — e.g. covering a teammate’s module before a deadline and still delivering on time.

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Own a real mistake, explain the fix, and the lasting change: “I tested on the wrong build; now I verify the build number before every run.”

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Show you used facts and found a middle path, without blaming. End with the positive outcome.

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Explain how you prioritised, what you cut or deferred, how you communicated, and the result.

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Name the skill, how you learned it (docs, small project, mentor) and how fast you applied it.

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Talk privately to understand causes, set clear expectations, offer support, check in regularly, and escalate only after support fails.

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Explain the options, why you chose one (often the reversible or lowest-risk option), and the outcome.

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Rank by impact and deadline, confirm the top priority with your manager, communicate what will slip, and protect focus time.

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Pair programming, code reviews with explanations, small ownership tasks, regular 1:1s — give an example of someone who improved.

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Cover requirement, plan, execution, risks, delivery and measurable result. Highlight your decisions.

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Encapsulation (bundle data and methods, hide internals), Abstraction (expose only essentials), Inheritance (reuse a parent class), Polymorphism (one interface, many behaviours — e.g. method overriding).

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Overloading: same name, different parameters, same class — resolved at compile time. Overriding: subclass redefines a parent method with the same signature — resolved at runtime.

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An abstract class can have state, constructors and implemented methods; a class extends only one. An interface defines a contract; a class can implement many. (Modern Java interfaces can also have default methods.)

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A process is an independent running program with its own memory. Threads run inside a process and share its memory — lighter, but need synchronisation.

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Two or more threads wait forever for resources held by each other. Conditions: mutual exclusion, hold and wait, no preemption, circular wait. Prevent by ordering lock acquisition.

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DNS lookup → TCP connection (+ TLS for HTTPS) → HTTP request → server response → browser parses HTML, loads CSS/JS/images → renders the page.

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A compiler translates the whole program to machine/byte code before running; an interpreter executes code line by line. Java compiles to bytecode which the JVM runs (with JIT compilation).

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Stack holds method calls and local variables (fast, automatic cleanup, limited size). Heap holds objects created at runtime (larger, managed by garbage collection in Java/Python).

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Single responsibility, Open/closed (extend without modifying), Liskov substitution (subtypes usable as base types), Interface segregation (small specific interfaces), Dependency inversion (depend on abstractions).

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Array: contiguous memory, O(1) index access, costly insertion in the middle. Linked list: nodes with pointers, O(1) insert/delete at a known node, O(n) access by index.

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Stack is LIFO (push/pop — undo, recursion). Queue is FIFO (enqueue/dequeue — task scheduling, BFS).

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Python: s[::-1]. Manually: two pointers swapping from both ends until they meet — O(n) time.

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Track first and second in one pass: if x > first, second = first and first = x; else if x > second and x ≠ first, second = x. O(n) time, O(1) space.

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On a sorted array, compare with the middle element and discard half each step. O(log n) time.

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A key-value structure using a hash function to find buckets. Average O(1) insert and lookup; worst case O(n) with many collisions.

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Count characters of both (dictionary or 26-length array) and compare counts — O(n). Sorting both and comparing is O(n log n).

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Use a hash map: for each x, check if target − x was seen; if yes, return the pair; else store x. O(n) time.

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Floyd’s algorithm: slow pointer moves 1, fast moves 2. If they meet, there’s a cycle. O(n) time, O(1) space.

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BFS (queue) explores level by level — shortest path in unweighted graphs. DFS (stack/recursion) goes deep — cycle detection, topological sort, exploring all paths.

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ls, cd, pwd, cp, mv, rm, cat, less, grep, find, chmod, chown, ps, top, df -h, du -sh, tail -f.

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Owner can read/write/execute (7); group and others can read/execute (5).

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TCP is connection-oriented and reliable (web, email). UDP is connectionless and faster with no delivery guarantee (video calls, DNS queries).

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The system that translates domain names (example.com) into IP addresses.

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An IP identifies a device on a network; the subnet mask (e.g. 255.255.255.0 or /24) defines which part is the network and which is the host.

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Physical, Data Link, Network, Transport, Session, Presentation, Application.

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22 SSH, 80 HTTP, 443 HTTPS, 3306 MySQL.

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Check CPU and memory (top), disk space and I/O (df -h, iostat), network, recent logs and deployments; find the bottleneck before changing anything.

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Confidentiality, Integrity and Availability — the three core goals of information security.

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Encryption is reversible with a key (protect data in transit/at rest). Hashing is one-way (store passwords with a salted, slow hash like bcrypt or Argon2).

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Tricking people with fake emails, messages or sites into revealing credentials or installing malware.

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SQL injection inserts malicious SQL through input — prevent with parameterised queries. XSS injects scripts into pages — prevent with output encoding and Content Security Policy.

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Requiring two or more factors — something you know, have or are — to log in.

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Contain (isolate systems), preserve evidence, assess scope, eradicate the cause, recover, notify as required, and run a post-incident review.

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fetch downloads changes without merging; pull = fetch + merge (or rebase) into your current branch.

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An independent line of development; work on features without affecting main, then merge.

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git checkout -b feature/x → edit → git add → git commit -m → git push → open a pull request → review → merge.

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Merge combines histories with a merge commit. Rebase replays your commits on top of another branch for a linear history — don’t rebase shared public branches.

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Open the conflicted files, choose or combine the changes between the markers, test, then git add and commit.

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reset moves the branch pointer (rewrites history — local use). revert creates a new commit that undoes a previous one (safe for shared branches).

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JVM runs bytecode. JRE = JVM + libraries needed to run Java programs. JDK = JRE + development tools like the compiler (javac).

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For security, thread safety and the string pool: the same literal can be shared safely. Use StringBuilder for frequent modifications.

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== compares references (same object); equals() compares content when overridden, as in String.

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ArrayList: dynamic array, fast random access, slower inserts in the middle. LinkedList: doubly linked list, fast insert/delete at ends, slow index access.

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Checked exceptions (IOException) must be handled or declared at compile time. Unchecked (RuntimeException, NullPointerException) are not enforced by the compiler.

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HashMap is not thread-safe and allows one null key. Hashtable is synchronised (legacy, slow). ConcurrentHashMap is thread-safe with fine-grained locking and no null keys/values.

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final variable can’t be reassigned; final method can’t be overridden; final class can’t be extended.

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Functional processing of collections: list.stream().filter(n -> n % 2 == 0).map(n -> n * n).toList();

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The container creates and supplies objects (beans) a class needs instead of the class creating them — usually through constructor injection — making code loosely coupled and testable.

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All register Spring beans. @Service marks business logic, @Repository data access (with exception translation), @Controller/@RestController web endpoints; @Component is generic.

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Spring wraps the method in a proxy that starts a transaction and commits on success or rolls back on runtime exceptions. Self-invocation inside the same class bypasses the proxy.

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Monitor heap growth, take heap dumps (jmap / JVisualVM / Eclipse MAT), look for objects retained by static collections, caches or unclosed resources, then fix and verify.

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List: ordered, mutable. Tuple: ordered, immutable. Set: unordered, unique items. Dict: key-value pairs (insertion-ordered since Python 3.7).

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*args collects extra positional arguments into a tuple; **kwargs collects extra keyword arguments into a dict.

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A concise way to build lists: [x * x for x in range(10) if x % 2 == 0].

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copy.copy copies the outer object but shares nested objects; copy.deepcopy copies everything recursively.

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The block runs only when the file is executed directly, not when imported as a module.

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A function that wraps another function to add behaviour (logging, timing, auth) without changing its code — applied with @decorator.

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A function using yield that produces values lazily, one at a time — memory-efficient for large data.

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def f(x=[]) shares the same list across calls. Use x=None and create a new list inside.

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In CPython, the Global Interpreter Lock lets only one thread execute Python bytecode at a time. Use multiprocessing or async for CPU-bound parallelism; threads still help with I/O.

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Looping over objects and querying related data each time. Fix with select_related (foreign keys) or prefetch_related (many-to-many/reverse relations).

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Django: batteries-included (ORM, admin, auth). Flask: minimal and flexible. FastAPI: modern, async, type-hint based with automatic OpenAPI docs.

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Value types (int, struct) hold data directly; reference types (class, string, arrays) hold a reference to data on the heap.

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const is a compile-time constant; readonly is set at declaration or in the constructor and can differ per instance.

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Language Integrated Query — query collections and databases with C# syntax: users.Where(u => u.Age > 18).Select(u => u.Name).

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Lets I/O-bound code run without blocking threads; await suspends the method until the Task completes.

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Components in the request pipeline (routing, authentication, logging) configured in Program.cs, each able to process the request and pass it on.

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Transient: new instance every time. Scoped: one per request. Singleton: one for the app’s lifetime.

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Tracking queries keep entities in the change tracker for updates; AsNoTracking() is faster for read-only queries.

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var is function-scoped and hoisted (initialised as undefined). let and const are block-scoped; const can’t be reassigned (but objects it points to can change).

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== converts types before comparing ('5' == 5 is true). === compares value and type ('5' === 5 is false).

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Falsy: false, 0, -0, 0n, "", null, undefined, NaN. Everything else is truthy, including [] and {}.

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"object" — a long-standing quirk of JavaScript.

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A function that remembers variables from its outer scope even after that scope has finished — used for private state and factories.

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JavaScript runs on one thread. Async callbacks wait in queues; when the call stack is empty, the event loop runs microtasks (promises) first, then macrotasks (setTimeout, I/O).

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Both handle async results. async/await is syntax over promises that reads like synchronous code; use try/catch for errors.

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Attaching one listener to a parent and using event.target to handle clicks on many children — efficient and works for elements added later.

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Debounce runs a function after activity stops for a delay (search box). Throttle runs it at most once per interval (scroll handlers).

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Determined by how a function is called: method call → the object; plain call → undefined in strict mode; arrow functions use this from the surrounding scope; bind/call/apply set it explicitly.

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Props are inputs passed from a parent (read-only in the child). State is data a component owns and updates, causing a re-render.

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A syntax extension that looks like HTML inside JavaScript; it compiles to React element calls.

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Keys help React identify which items changed, were added or removed. Use stable unique IDs, not array indexes, when the list can change.

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Runs side effects after render (fetching data, subscriptions). The dependency array controls when it re-runs; return a cleanup function to unsubscribe.

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Controlled inputs keep their value in React state via value/onChange. Uncontrolled inputs keep their own DOM state, read with refs.

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A lightweight in-memory representation of the UI. React compares (diffs) new and old trees and updates only the changed parts of the real DOM.

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Keep state close to where it’s used, memoise components with React.memo, stabilise callbacks/values with useCallback/useMemo when profiling shows a need, and avoid creating new objects in props.

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Context passes values without prop drilling — good for theme or auth. A store (Redux Toolkit, Zustand) suits complex, frequently updated shared state with devtools and middleware.

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A JavaScript runtime built on Chrome’s V8 engine for running JavaScript on servers, with non-blocking, event-driven I/O.

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Functions that run between the request and the response — e.g. parsing JSON, logging, authentication — calling next() to continue.

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GET (read), POST (create), PUT (replace), PATCH (partial update), DELETE (remove).

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OK, Created, Bad Request, Unauthorized (not authenticated), Forbidden (no permission), Not Found, Internal Server Error.

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JSON Web Token — a signed token containing claims, used for stateless authentication. Keep it short-lived and never put secrets in its payload.

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Use an error-handling middleware with four arguments (err, req, res, next), map known errors to status codes, log details, and return safe messages.

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HTTPS, authentication (JWT/OAuth), authorisation checks per resource, input validation, rate limiting, parameterised queries, secure headers and secrets in environment variables.

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Both output text. echo can take multiple arguments and has no return value; print takes one argument and returns 1.

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GET sends data in the URL (visible, cacheable, for reading). POST sends data in the request body (for submitting forms and changing data).

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Cookies are stored in the browser; sessions store data on the server and use a cookie with a session ID.

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Use prepared statements with PDO or MySQLi and bound parameters — never concatenate user input into SQL.

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Laravel’s ORM, where each model maps to a table and relationships are defined as methods (hasMany, belongsTo).

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Migrations version-control the database schema; seeders insert sample or default data.

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Moving slow tasks (emails, reports, image processing) to background workers so requests respond quickly.

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onCreate → onStart → onResume (running) → onPause → onStop → onDestroy; onRestart when returning from stopped.

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val is read-only (cannot be reassigned); var is mutable.

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Types are non-null by default; nullable types use ?. Use ?., the Elvis operator ?:, and avoid !!.

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An architecture component that holds UI data and survives configuration changes like rotation.

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Kotlin’s lightweight way to write asynchronous code sequentially, using suspend functions and scopes like viewModelScope.

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View (Activity/Compose UI) observes state from the ViewModel; the ViewModel gets data from a Repository, which talks to network and database.

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Keep heavy work off the main thread, handle nulls and errors, monitor with Crashlytics, add tests, and roll out releases gradually.

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Stateless widgets don’t change after building. Stateful widgets hold mutable state and rebuild when setState is called.

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Injects code changes into the running app and rebuilds widgets while keeping app state — fast UI iteration.

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Describes the widget’s UI. Flutter calls it whenever the widget needs to be rebuilt, so keep it fast.

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Identifiers that help Flutter preserve state when widgets move or are reordered in a list.

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A Future gives one value later; a Stream gives a sequence of values over time.

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Provider/Riverpod for simple to medium apps, BLoC for event-driven, testable architecture, GetX for minimal boilerplate. Choose based on team size and complexity.

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Use const widgets, avoid rebuilding large trees, use ListView.builder for long lists, cache images, and profile with DevTools.

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UI is how the product looks and feels (layouts, colours, components). UX is the whole experience — how easily users achieve their goals.

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A wireframe is a low-fidelity layout; a prototype is an interactive model used to test flows.

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Understand the problem and users → research → define → ideate and wireframe → prototype → test with users → iterate → hand off with specs.

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Designing for all users: sufficient colour contrast, readable text sizes, keyboard and screen-reader support, clear labels and touch targets.

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A shared library of components, styles and guidelines that keeps products consistent and speeds up design and development.

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Understand their concern, connect the design to user research or data, propose a test, and stay open to a better solution.

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Task success rate, time on task, conversion rate, drop-off points, support tickets and user satisfaction scores.

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A primary key uniquely identifies each row. A foreign key in another table references it to link records.

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INNER JOIN returns only matching rows. LEFT JOIN returns all rows from the left table, with NULLs where there is no match.

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WHERE filters rows before grouping; HAVING filters groups after GROUP BY.

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DELETE removes selected rows (can use WHERE). TRUNCATE removes all rows quickly. DROP removes the table itself.

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SELECT MAX(salary) FROM employees WHERE salary < (SELECT MAX(salary) FROM employees);

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SELECT email, COUNT(*) FROM users GROUP BY email HAVING COUNT(*) > 1;

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Organising tables to reduce redundancy: 1NF atomic values, 2NF no partial dependency, 3NF no transitive dependency.

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A structure (often a B-tree) that speeds up reads on indexed columns. It uses storage and slows inserts/updates.

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Atomicity (all or nothing), Consistency (valid state), Isolation (concurrent transactions don’t interfere), Durability (committed data survives failures).

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SELECT * FROM (SELECT e.*, DENSE_RANK() OVER (PARTITION BY dept_id ORDER BY salary DESC) AS r FROM employees e) t WHERE r <= 3;

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Read the execution plan (EXPLAIN), add or fix indexes, avoid SELECT *, avoid functions on indexed columns in WHERE, rewrite subqueries as joins where useful, and paginate.

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Mean is the average, median is the middle value when sorted, mode is the most frequent value. Median is better when data has outliers (e.g. salaries).

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Remove duplicates, handle missing values, fix data types and formats, standardise text, check outliers and validate totals against the source.

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Summarising data quickly — totals, counts and averages by category — without formulas.

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A key performance indicator measuring progress toward a goal — e.g. monthly revenue, conversion rate, customer churn, average resolution time.

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Line chart for trends over time; bar chart for comparing categories; avoid pie charts with many slices.

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Data Analysis Expressions — the formula language for measures and calculated columns, e.g. Total Sales = SUM(Sales[Amount]).

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Correlation means two variables move together; causation means one causes the other. Proving causation needs experiments or careful analysis.

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Lead with the answer and its business impact, use one clear chart per point, avoid jargon, and finish with a recommendation and next steps.

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Supervised learns from labelled data (predict house prices). Unsupervised finds patterns in unlabelled data (customer segmentation).

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Classification predicts categories (spam / not spam); regression predicts continuous values (price).

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The model memorises training data and performs poorly on new data. Reduce with more data, simpler models, regularisation, cross-validation, dropout or early stopping.

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Precision = correct positive predictions ÷ all positive predictions. Recall = correct positive predictions ÷ all actual positives. F1 is their harmonic mean.

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Train fits the model, validation tunes it, and test gives an unbiased final estimate of performance on unseen data.

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Use suitable metrics (precision/recall, PR-AUC), resample (oversample minority/undersample majority), use class weights, or adjust the decision threshold.

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High bias = model too simple (underfits); high variance = model too sensitive to training data (overfits). Aim for the balance that minimises error on new data.

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Continuous Integration: automatically build and test every change. Continuous Delivery/Deployment: automatically prepare or release tested changes to environments.

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A tool to package an application with its dependencies into a container that runs the same way everywhere.

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Containers share the host OS kernel — lightweight, fast to start. VMs include a full guest OS — heavier but stronger isolation.

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Orchestrating containers: scheduling, scaling, self-healing, rolling updates and service discovery across a cluster.

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EC2 (virtual servers), S3 (object storage), RDS (managed databases), IAM (access control), VPC (networking), CloudWatch (monitoring), Lambda (serverless functions).

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Defining infrastructure in version-controlled files (Terraform, CloudFormation) so environments are reproducible and reviewable.

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Rolling or blue-green deployments behind a load balancer, health checks before shifting traffic, backward-compatible database migrations, and quick rollback.

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Latency, traffic, error rate and saturation (the “golden signals”), plus logs, alerts with sensible thresholds, and dashboards.

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Software Testing Life Cycle: requirement analysis → test planning → test case design → environment setup → test execution → test closure.

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New → Assigned → Open → Fixed → Retest → Verified → Closed; side states include Rejected, Duplicate, Deferred and Reopened.

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Severity = impact on the system. Priority = urgency to fix. A typo in the company name on the homepage: low severity, high priority.

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Smoke: quick check that core features work in a new build. Sanity: focused check after a small change. Regression: re-test existing features after changes.

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Valid login; wrong password; unregistered user; empty fields; password masking; max length; SQL injection input; lockout after failed attempts; forgot-password link; session handling after logout and back button.

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Verification: are we building the product right (reviews, walkthroughs)? Validation: are we building the right product (testing against user needs)?

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Black-box tests functionality without seeing code; white-box tests internal logic and code paths.

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For an age field accepting 18–60, test 17, 18, 19, 59, 60 and 61.

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Risk-based testing: prioritise critical business flows, recently changed areas and historically buggy modules; communicate what wasn’t covered.

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Clear title, environment and build, steps to reproduce, expected vs actual result, severity, screenshots/logs, and reproducibility.

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A tool to automate browsers by controlling them through code (Java, Python, C#, JavaScript).

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id, name, className, tagName, linkText, partialLinkText, cssSelector and xpath. Prefer stable ids or CSS selectors.

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Implicit wait applies globally when finding elements. Explicit wait (WebDriverWait + ExpectedConditions) waits for a specific condition. Prefer explicit waits and avoid mixing the two.

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A design pattern where each page is a class holding its locators and actions, keeping tests readable and easier to maintain.

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Send requests with methods, headers and body; check status code, response body and time; add test scripts and run collections with environments.

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Find the root cause — timing, test data, environment — use explicit waits, isolate test data, avoid order dependencies, and quarantine until fixed.

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Run smoke tests on every pull request and full regression nightly in Jenkins or GitHub Actions, headless browsers, with reports and failure notifications.

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Personal account: debit the receiver, credit the giver. Real account: debit what comes in, credit what goes out. Nominal account: debit expenses and losses, credit incomes and gains.

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Rent A/c Dr ₹10,000 · To Bank A/c ₹10,000.

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Ravi A/c Dr ₹25,000 · To Sales A/c ₹25,000.

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Capital expenditure creates long-term assets (buying a machine). Revenue expenditure is for day-to-day running (salaries, rent, repairs).

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The allocation of an asset’s cost over its useful life, reflecting wear and tear — e.g. straight-line or written-down value method.

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A statement that matches the cash book balance with the bank passbook, explaining differences such as cheques issued but not presented, deposits not yet credited, and bank charges.

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For a sale within the same state, GST is split into CGST (centre) and SGST (state). For a sale to another state, IGST is charged.

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Tax Deducted at Source — the payer deducts tax at prescribed rates when paying salary, rent, professional fees etc., and deposits it with the government.

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Accrual records income and expenses when earned or incurred; cash basis records them only when cash is received or paid.

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Reconcile bank and ledgers, book accruals and provisions, review AR/AP ageing, check GST/TDS entries, prepare trial balance and MIS, and resolve differences before sign-off.

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Current assets minus current liabilities. Improve it by faster collections, better inventory control and negotiating longer supplier terms.

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Ask questions first to learn the buyer’s need (“When did you last need to sign something important?”), then position the pen as the solution, handle one objection and ask for the sale.

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A lead is anyone who might be interested; a prospect is a qualified lead that fits your customer profile and has shown real interest.

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Acknowledge it, ask what they’re comparing with, restate value and outcomes, and offer options like a smaller package rather than a quick discount.

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Stages from awareness to purchase: lead → qualified → meeting/demo → proposal → negotiation → closed. Track conversion at each stage.

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Work backwards from target using conversion rates to the number of calls, meetings and proposals needed per week; track daily and adjust.

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Name it (Zoho CRM, HubSpot, Salesforce) and describe pipeline updates, follow-up tasks, reports and forecasting.

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Current Account and Savings Account deposits. They are a low-cost source of funds for a bank, so a higher CASA ratio usually means better margins.

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CRR (Cash Reserve Ratio) is the share of deposits a bank must keep as cash with the RBI. SLR (Statutory Liquidity Ratio) is the share it must hold itself in liquid assets such as cash, gold or government securities.

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The rate at which the RBI lends short-term money to banks against government securities. Changes in the repo rate influence loan and deposit rates across the economy.

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A loan where interest or principal has remained overdue for more than 90 days.

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NEFT settles in half-hourly batches and has no minimum amount. RTGS is real-time, gross settlement for ₹2 lakh and above. IMPS is instant and available 24×7. NEFT and RTGS have also been available 24×7 since 2019–2020.

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Know Your Customer — verifying a customer’s identity and address with valid documents. It prevents fraud, money laundering and identity misuse, and it is a regulatory requirement.

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Understand their needs first — for example, a salaried customer with a growing family may need term insurance or a recurring deposit — then explain one relevant benefit clearly, without pressure.

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Apologise, check the transaction status, raise a dispute or complaint with the reference number, explain the reversal timeline as per the bank’s and RBI’s turnaround rules, and follow up until it is resolved.

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Build a pipeline from existing customers and referrals, match products to real needs, keep follow-ups disciplined and never mis-sell — complaints and mis-selling cost more than a missed target.

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Bridges business and technology: understands problems, gathers and documents requirements, works with developers and testers, and checks that the delivered solution meets the business need.

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A short requirement from the user’s view: “As a job seeker, I want to save jobs so that I can apply later.” It is paired with acceptance criteria.

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Often in Given/When/Then form: “Given I am logged in, when I tap the heart on a job, then it appears in my saved jobs.”

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A BRD (Business Requirements Document) describes what the business needs and why. An FRD (Functional Requirements Document) describes how the system should behave to meet those needs.

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Stakeholder interviews, workshops, observation, surveys, document analysis and prototyping — choosing based on the stakeholders and the problem.

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Classifying requirements as Must have, Should have, Could have and Won’t have (this time).

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Bring them together, clarify the underlying goals, show the impact and trade-offs with data, and escalate to the product owner or sponsor for a decision if needed — then document it.

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User Acceptance Testing is when business users verify the solution. The BA prepares scenarios, supports users, triages issues and confirms sign-off.

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Scope, time and cost. Changing one affects the others, and quality depends on balancing all three.

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Waterfall moves through fixed phases in sequence and suits stable requirements. Agile delivers in short iterations with frequent feedback and suits changing requirements.

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Product Owner (what to build and priorities), Scrum Master (process and removing blockers) and the Developers (building the increment).

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The longest sequence of dependent tasks in a project. Any delay on it delays the whole project.

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A tracker for Risks, Assumptions, Issues and Dependencies, reviewed regularly with the team.

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Milestones and burn-down or burn-up charts, regular stand-ups and status reports, budget versus actuals, and a clear risk register.

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Find the cause, assess impact, look at options (re-sequencing, adding people, reducing scope), agree a recovery plan with stakeholders early and communicate the new dates honestly.

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Baseline the scope, route every new request through change control with impact on time and cost, and get sign-off before work starts.

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Understands requirements, sources candidates (portals, LinkedIn, referrals), screens, schedules interviews, coordinates feedback, negotiates offers and follows up until joining.

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A search using AND, OR, NOT and quotes to find profiles: ("Java Developer" OR "Backend Engineer") AND "Spring Boot" AND Kochi.

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Signed offer, ID and address proof, PAN, education certificates, previous relieving and experience letters, payslips, bank details, UAN, photographs.

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CTC is the total employer cost; gross is monthly earnings before deductions; net is take-home after PF, professional tax and TDS.

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Stay in touch until joining, share team and onboarding details, address concerns early, confirm notice timelines, and keep a backup candidate.

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How committed and involved employees are. Improved through recognition, growth, communication, feedback and a good work environment.

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Time to fill, time to hire, source of hire, offer acceptance rate, cost per hire, interview-to-offer ratio and quality of hire.

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Plan a drive: campus tie-ups and job posts, online aptitude screening, batch interviews on fixed days, quick offer approvals, and a joining tracker with regular follow-ups.

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Listen without interrupting, acknowledge the feeling, apologise for the experience, take action or explain next steps with a timeline, and follow up.

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Voice process handles customers on calls; non-voice handles email, chat or back-office work.

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AHT = Average Handling Time; FCR = First Call (Contact) Resolution; CSAT = Customer Satisfaction score.

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Service Level Agreement — committed response and resolution times, e.g. respond to emails within 4 hours.

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Be honest, put them on a short hold or promise a callback, check the knowledge base or ask a senior, then give accurate information.

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Explain the reason briefly, offer an alternative, and stay positive: “I can’t refund this item, but I can arrange a replacement today.”

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Analyse low-score tickets for patterns, update scripts and knowledge base, coach agents with call reviews, and fix recurring product issues with the product team.

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Looks up a value in the first column of a range and returns a value from another column: =VLOOKUP(A2, Sheet2!A:C, 3, FALSE). FALSE means exact match.

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Use SUMIF: =SUMIF(B:B, "Kochi", C:C), or SUMIFS for multiple conditions.

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A tool that summarises large data — e.g. total sales by region and month — by dragging fields into rows, columns and values.

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Select the data → Data tab → Remove Duplicates, choosing which columns to compare. Or use =UNIQUE() in newer Excel.

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COUNT counts numeric cells; COUNTA counts non-empty cells; COUNTIF counts cells meeting a condition.

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Consistent file naming, folder structure, a master register, regular backups, access control and a retention schedule.

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Use a structured data table, pivot tables or Power Query to refresh data, formulas for KPIs, and a template that updates with one refresh.

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Answer within a few rings, greet with the company name and your name, listen, note the caller’s name, number and purpose, and transfer or promise a callback.

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Greet politely, note their details and purpose, check with the concerned person, and either guide them, offer a waiting area or schedule a time.

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MS Excel/Word, email and calendars, a visitor register or visitor management system, and the company’s phone (EPABX) system.

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Acknowledge the visitor with a smile, answer the call briefly and place it on hold or take a message, then attend to the visitor — no one should feel ignored.

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Share details only with authorised people, keep registers and screens out of view, and never discuss staff or client matters with visitors.

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Introduce a digital visitor log, standard call scripts, a shared calendar for meeting rooms and a simple FAQ for common visitor questions.

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Search Engine Optimisation — improving visibility in organic search. On-page (content, titles, headings), off-page (backlinks, mentions) and technical SEO (speed, crawlability, mobile).

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Organic traffic comes from unpaid search and social; paid traffic comes from ads such as Google Ads or Meta Ads.

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CTR = clicks ÷ impressions; CPC = cost per click; CPM = cost per 1,000 impressions.

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Conversions ÷ visitors × 100. If 40 of 2,000 visitors sign up, the conversion rate is 2%.

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Return on Ad Spend = revenue from ads ÷ ad spend. ₹50,000 revenue on ₹10,000 spend is a ROAS of 5 (or 500%).

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Showing two versions (e.g. two ad headlines) to similar audiences and comparing results to choose the better one.

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Define goal and audience, choose channels, set budget and KPIs, prepare creatives, launch with tracking (UTM, pixels), test variations, and optimise weekly.

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Read official and reputable sources, note key facts, check dates, compare at least two sources, and keep a list of references.

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Content writing informs or educates (blogs, guides); copywriting persuades the reader to act (ads, landing pages).

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Answer the search intent, use the main keyword in title, first paragraph and a heading, use related terms naturally, and write for readers first.

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Read it fully, ask about anything unclear, apply changes, and keep a list of recurring feedback to improve future drafts.

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Organic traffic, time on page, scroll depth, conversions or sign-ups, rankings for target keywords, and backlinks earned.

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RGB (red, green, blue) is for screens. CMYK (cyan, magenta, yellow, black) is for print. Design print files in CMYK to avoid colour shifts.

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Raster images (JPG, PNG) are made of pixels and blur when enlarged. Vector graphics (SVG, AI, EPS) use paths and scale without losing quality — ideal for logos.

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Usually 300 DPI at the final print size; screens typically need far less.

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A clear hierarchy, readable typography, consistent spacing and alignment, purposeful colour, and a message that fits the audience and brand.

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Adobe Photoshop and Illustrator, InDesign for layouts, Figma for UI and collaboration, and Canva for quick social posts — name the ones you can show work in.

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Understand the goal behind the feedback, explain your reasoning briefly, offer an alternative or a quick A/B version, and respect the final brand decision.

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Use a brand guide with logo rules, colours, typography and templates, keep shared libraries in Figma or Creative Cloud, and review outputs before publishing.

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Stress is internal force per unit area (N/mm²). Strain is the change in length divided by the original length (no unit).

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Within the elastic limit, stress is directly proportional to strain. The constant of proportionality is Young’s modulus.

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The ratio of the material’s failure (ultimate or yield) stress to the allowable working stress — a margin for uncertainty.

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A two-stroke engine completes a power cycle in one crankshaft revolution; a four-stroke needs two revolutions. Four-strokes are generally more fuel-efficient and cleaner; two-strokes are simpler and lighter.

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Welding melts the base metals to join them. Brazing uses a filler that melts above about 450 °C without melting the base metal. Soldering uses a filler that melts below about 450 °C.

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Name what you can demonstrate — AutoCAD for 2D drafting, SolidWorks, CATIA or Creo for 3D modelling — and describe a part you designed.

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Preventive maintenance is time-based (servicing every N hours). Predictive maintenance uses condition data — vibration, temperature, oil analysis — to service only when needed.

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Collect data, use tools like 5 Whys and a fishbone (Ishikawa) diagram, verify the cause with trials, fix it, and add controls so it doesn’t recur.

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Concrete with a characteristic compressive strength of 20 N/mm² at 28 days. Its nominal mix is commonly 1 : 1.5 : 3 (cement : sand : aggregate).

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The workability (consistency) of fresh concrete.

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It keeps concrete moist so cement hydrates properly, improving strength and durability and reducing cracks. For ordinary Portland cement, at least 7 days of curing is the common minimum.

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If the longer span divided by the shorter span is more than 2, the slab bends mainly in one direction (one-way). Otherwise it spans both ways (two-way).

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AutoCAD for drawings, STAAD.Pro or ETABS for structural analysis, Revit for BIM, and MS Project or Primavera for planning — mention projects you used them on.

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Inspection checklists, material testing (cube tests, sieve analysis), checking reinforcement before pouring, following approved drawings and keeping records.

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Track quantities against the BOQ, control material wastage, monitor labour productivity, raise variations promptly and review budget versus actuals every week.

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Voltage equals current multiplied by resistance (V = I × R), at constant temperature.

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AC changes direction periodically; DC flows in one direction. India’s mains supply is about 230 V at 50 Hz.

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The ratio of real power (kW) to apparent power (kVA). A low power factor wastes capacity; it is commonly improved with capacitor banks.

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An MCB protects against overload and short circuit. An RCCB detects earth leakage current and protects people from electric shock.

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In star, line voltage = √3 × phase voltage and line current = phase current. In delta, line voltage = phase voltage and line current = √3 × phase current.

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It works by mutual induction, which needs a changing magnetic flux. DC produces a constant flux, so no voltage is induced — and the winding can overheat.

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Isolate the supply, apply lockout/tagout, test for absence of voltage, use proper PPE, and follow the permit-to-work system.

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A Programmable Logic Controller automates machines using inputs, logic and outputs (often ladder logic). Explain a sequence you programmed or troubleshot.

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Temperature about 36.5–37.5 °C, pulse 60–100 beats per minute, respiration 12–20 breaths per minute, and blood pressure around 120/80 mmHg or slightly below.

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Right patient, right drug, right dose, right route and right time — plus right documentation.

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Before touching a patient, before a clean/aseptic procedure, after body-fluid exposure risk, after touching a patient, and after touching patient surroundings.

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Sorting patients by the urgency of their condition so the most critical are treated first.

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Stay calm, listen, acknowledge their concern, explain clearly what is happening, keep yourself safe, and involve a senior or security if needed.

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Use a structured format such as SBAR (Situation, Background, Assessment, Recommendation) and cover pending medicines, investigations and concerns.

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Ensure the patient is safe, inform the doctor immediately, monitor the patient, document accurately, and report it through the incident reporting system.

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A generic contains the same active ingredient, strength and dosage form as the branded original and is usually cheaper.

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Follow the label: room temperature, refrigerated (often 2–8 °C) or protected from light; keep stock in FEFO order (first expiry, first out) and check expiry dates regularly.

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A medicine that may be sold only against a valid prescription from a registered medical practitioner.

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Patient details, prescriber details and signature, drug name, strength, dose, frequency, duration, possible interactions and allergies — and clarify anything unclear with the doctor.

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Explain what it is for, how and when to take it, common side effects, what to avoid, and when to see the doctor — then check they understood.

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Double-check look-alike/sound-alike drugs, keep them apart, use barcode or second-person checks, and maintain a calm, organised dispensing area.

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Learning objectives, materials, an introduction or hook, teaching activities, checks for understanding, assessment and a closing summary or homework.

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Formative assessment checks learning during the course (quizzes, questions) to adjust teaching. Summative assessment measures learning at the end (final exams, projects).

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A hierarchy of learning levels: remember, understand, apply, analyse, evaluate and create — used to design questions and activities.

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Differentiate: group tasks by level, give extension work to fast learners, extra support and examples to others, and use peer learning.

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Talk privately to find the reason, connect the topic to their interests, give small achievable tasks with quick praise, and involve parents if needed.

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Listen fully, stay calm, share facts and the student’s work, agree a plan together and follow up on progress.

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Presentations and short videos for concepts, quizzes (e.g. Google Forms or Kahoot) for quick checks, and a learning platform for assignments and feedback.

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Use LAST: Listen, Apologise, Solve, Thank — then follow up to make sure the guest is satisfied.

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Greet the guest, verify the booking and ID, complete registration, confirm the rate and stay details, take the deposit or payment as per policy, issue the key and explain facilities.

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Roughly 5 °C to 60 °C, where bacteria grow fastest. Keep cold food cold and hot food hot.

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ADR (Average Daily Rate) = room revenue ÷ rooms sold. RevPAR (Revenue per Available Room) = room revenue ÷ rooms available, or ADR × occupancy.

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Apologise, offer an upgrade if available, otherwise arrange a comparable nearby hotel with transport at the hotel’s cost, and follow the property’s policy.

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Analyse review themes, fix recurring issues (cleanliness, check-in time), train staff on service standards, and respond to every review professionally.

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Upselling offers a higher-value version of the item. Cross-selling offers a related item, such as a case with a phone.

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Greet within a few seconds, ask an open question about what they need, listen, and recommend options without pressure.

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Loss of inventory from theft, damage, errors or fraud — controlled with audits, security and accurate billing.

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Arranging products and displays to attract customers and increase sales — eye-level placement, themed displays, clear signage and clean aisles.

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Follow store policy politely; if allowed, offer an exchange or store credit, and escalate to the supervisor when needed.

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Sales versus target, footfall, conversion rate, average bill value, units per transaction, shrinkage and stock availability.

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FIFO (first in, first out) dispatches the oldest stock first. FEFO (first expiry, first out) dispatches the stock that expires soonest — essential for food and medicines.

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The time between placing an order and receiving the goods.

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An electronic document under GST required for moving goods worth more than ₹50,000 (some states set different thresholds for movement within the state).

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Cost of goods sold ÷ average inventory. A higher turnover means stock moves faster.

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Under FOB the buyer arranges the main freight and insurance, and risk passes once goods are loaded on the vessel. Under CIF the seller pays cost, insurance and freight to the destination port, but risk still passes at loading.

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A Warehouse Management System that tracks stock locations, receiving, put-away, picking, packing and dispatch.

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Consolidate shipments, optimise routes, negotiate carrier rates, improve load utilisation, reduce damages and returns, and track cost per shipment.