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Wipro Technical Interview & Online Assessment: Real Questions, Short Answers & Remote Tips

by Pradip Singh
written by Pradip Singh
Candidate preparing for Wipro remote OA with laptop and webcam

Preparing for Wipro’s online assessment (OA) or a remote technical round? This page compiles real questions with crisp answers and a practical checklist to avoid remote-interview pitfalls. Want tailored help? Book a free 10-minute OA readiness audit.

How the Wipro Online Assessment Typically Works

  • Structure: CS fundamentals + Java/OOP, DBMS/SQL, OS/Networks; 1–2 coding items (role dependent).
  • Mode: Remote proctored — webcam/mic on, ID verification; no tab switching.
  • Time: 60–120 minutes depending on track/version.
  • Environment: Browser editor for coding; built-in console or MCQ for DBMS.

Most-Asked Questions (Click to reveal answers)

1) Abstraction vs Encapsulation — what’s the difference?

Click to see the answer
Abstraction exposes essential behavior while hiding details via interfaces/abstract classes. Encapsulation hides data by restricting field access and exposing controlled methods; it enforces invariants and reduces coupling.

2) ArrayList vs LinkedList in Java — when to use which?

Click to see the answer
ArrayList: contiguous array, O(1) random access, fast iteration; mid inserts costly. LinkedList: O(1) insert/delete with node reference, O(n) random access; extra memory for links. Prefer ArrayList unless frequent mid-list mutations dominate.

3) Normalization — 1NF, 2NF, 3NF, BCNF (quick view)

Click to see the answer
1NF: atomic values; 2NF: 1NF + no partial key dependency; 3NF: 2NF + no transitive dependency; BCNF: every determinant is a candidate key. Normalization reduces anomalies.

4) Indexes — clustered vs nonclustered (and effect on queries)

Click to see the answer
Clustered index defines physical row order (often one per table); fast range scans. Nonclustered stores pointers to rows; great for selective lookups. Over-indexing slows writes — balance read vs write.

5) JOINs — INNER, LEFT, RIGHT, FULL (use-cases)

Click to see the answer
INNER: matches only; LEFT/RIGHT: keep all rows from one side with NULLs for missing matches; FULL: union with NULLs for both sides. Choose based on whether unmatched rows must be preserved.

6) Transaction isolation levels — read phenomena

Click to see the answer
READ UNCOMMITTED (dirty reads), READ COMMITTED (no dirty reads), REPEATABLE READ (no non-repeatable reads), SERIALIZABLE (no phantoms). Pick per correctness vs concurrency trade-offs.

7) TCP vs UDP — trade-offs

Click to see the answer
TCP: connection-oriented, reliable, ordered; higher overhead. UDP: connectionless, faster, no guarantees—great for streaming/gaming; add reliability at the app layer if needed.

8) Deadlock — conditions & prevention

Click to see the answer
Coffman: mutual exclusion, hold-and-wait, no preemption, circular wait. Prevent via resource ordering, timeouts, detection & recovery, or avoiding circular wait.

9) Process vs Thread

Click to see the answer
A process has its own address space (strong isolation). Threads share memory within a process (lighter context switch). Use threads for concurrency in the same app domain.

10) SQL: Department-wise Top-3 salaries (window functions)

Click to see the answer
[code lang=”sql”] SELECT *
FROM (
SELECT emp_id, dept_id, salary,
DENSE_RANK() OVER (PARTITION BY dept_id ORDER BY salary DESC) r
FROM employees
) t
WHERE r <= 3;
[/code]

11) Coding: Check if two strings are anagrams (ignore case/space)

Click to see the answer
[code lang=”java”] boolean isAnagram(String a, String b) {
char[] x = a.replaceAll(“\\s”,””).toLowerCase().toCharArray();
char[] y = b.replaceAll(“\\s”,””).toLowerCase().toCharArray();
java.util.Arrays.sort(x); java.util.Arrays.sort(y);
return java.util.Arrays.equals(x, y);
}
[/code]

12) Inheritance vs Composition — what to prefer?

Click to see the answer
Favor composition over inheritance for flexibility and lower coupling; inherit only for true “is-a” relationships and to reuse behavior without violating LSP.

Remote Interview (OA) Readiness Checklist

  • Update OS, browser, JDK/Python; disable pop-ups; keep charger plugged.
  • Stable internet (≥10 Mbps); set up a mobile hotspot as backup.
  • Quiet, well-lit room; neutral background; camera at eye level.
  • Know proctoring rules: ID verification, no tab switching, allowed tools only.
  • Time management: solve sure-shots first; keep 5 minutes for review.
  • Do a webcam-on mock OA (60–90 min) with a single-screen setup.

Need help? Book a 25-minute Mock Online Assessment →

What you get with Engineer’s Planet Interview Assistance

  • OA Simulator: Camera/mic-on practice with section timers.
  • Targeted drills: Java/OOP, SQL windows & joins, OS/DBMS quick answers, debugging.
  • Code reviews: Complexity, test-case strategy, refactoring.
  • Company-specific prep: Wipro/Cognizant/EY/Cisco banks updated from real attempts.
  • Scorecard & plan: Ranked improvements after every mock.

Get your free 10-minute readiness audit → /mentorship-sessions/

Downloadable PDF

Download the PDF: Wipro OA – Questions & Answers

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