Microsoft OA (Microsoft Coding Online Assessment — Mock) — Free Online Mock Test
A Microsoft-style coding online-assessment mock — trees and data structures, arrays/strings, and graphs, in test-case-style MCQ form. Microsoft leans on data-structure fluency and clean design; no negative marking. · Official language: English.
Microsoft OA exam at a glance
Microsoft OA full-length mock tests
Attempt 50 full-length Microsoft OA mock tests, each a distinct question set built on the real 34-question, 85-minute pattern — with instant scoring and section-wise analysis. The first 3 are free.
Microsoft OA key facts & eligibility
| Conducting body | Format modelled on Microsoft’s software-engineering coding online assessment (an original practice board — not affiliated with, authorised by, or an official test of Microsoft) |
|---|---|
| Official website | careers.microsoft.com ↗ |
| Mode | A timed, test-case-style coding assessment practised in MCQ form — modelled on the online-assessment round in Microsoft’s hiring. |
| Frequency | Practise on demand — the real online assessment is scheduled per Microsoft hiring pipeline. |
| Scoring & marking | This mock reflects Microsoft’s data-structure fluency emphasis — trees and data structures, arrays/strings, and graphs — as complexity, output-prediction and structure-choice questions, with no negative marking. Microsoft’s real loop adds multiple interviews with coding and design. |
| Score validity | Each employer’s online-assessment result applies within its own hiring cycle. |
| Language | English. |
Who is eligible for Microsoft OA?
Microsoft’s software roles target computer-science and allied graduates, with skill-first pipelines common; there is no bar to practising the format here. Verify the specific role on Microsoft Careers.
Last verified August 2026 against Microsoft Careers. Always confirm current details on the official website before you register.
Microsoft OA section breakdown
The Microsoft OA mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. No inter-section breaks — the timer runs continuously.
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Trees & Data Structures
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Arrays & Strings
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Graphs & Traversal
Microsoft OA scoring & marking scheme
Strategy: Microsoft OA has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.
Scale: Microsoft OA (out of 34).
How Microsoft OA is conducted
- Mode
- Test format
- Backtracking
- Mark for review
Microsoft OA time strategy
With 34 questions in 85 minutes, you have about 150 seconds per question on average. Successful candidates aim for the following pacing on each section:
- Trees & Data Structures
- Arrays & Strings
- Graphs & Traversal
Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.
Microsoft OA topics covered
Across the 50 Wrexa Edge variants of Microsoft OA, the following topics appear most often (sample distribution from one variant):
Trees & Data Structures
- DSA - Queues · 7
- DSA - Trees · 5
Arrays & Strings
- DSA — Prefix Sum · 6
- DSA — Matrix · 6
Graphs & Traversal
- DSA — Greedy · 9
- DSA — Graphs · 1
Microsoft OA difficulty calibration
Advanced tier. Advanced-level: high-stakes exam with rigorous content depth. Expect 4-8 months of structured prep.
A Microsoft-style coding online-assessment mock — trees and data structures, arrays/strings, and graphs, in test-case-style MCQ form. Microsoft leans on data-structure fluency and clean design; no negative marking. · Official language: English.
Verified content — Wrexa Edge's Microsoft OA bank has been deeply curated with real exam-aligned content (estimated 62% syllabus coverage).
How Wrexa Edge prepares you for Microsoft OA
- Real test-day interface
- 50 distinct variants
- Detailed analytics
- Spaced repetition (Notebook)
- Optional proctoring
- Free to start
Microsoft OA study plan
A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.
- Trees, BSTs, heaps, linked structures, tries
- Traversals and invariants
- Per-structure costs
- Arrays/strings, hashing
- Recursion, sorting, searching, DP
- Complexity analysis
- BFS/DFS, shortest paths
- Clean object-oriented design
- Trade-offs
- Full-length timed OAs
- Fix the weakest topic
- Explain design choices
Where Microsoft OA can take you
A strong Microsoft OA result opens up these careers and higher-study paths:
- Software Engineer (Microsoft)
- Any product-company SWE role
Best books & official prep for Microsoft OA
Official practice: Get fluent with trees, linked structures and graphs, and be ready to reason about clean design alongside the algorithm.
Frequently asked questions
- What is the Microsoft OA exam pattern?
- Microsoft Coding Online Assessment — Mock contains 34 questions across 3 sections: Trees & Data Structures, Arrays & Strings, Graphs & Traversal. Total duration is 85 minutes (about 150 seconds per question).
- Does Microsoft OA have negative marking?
- No — Microsoft OA has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
- How is Microsoft OA scored?
- Scaled score range: 0 to 34. Microsoft OA (out of 34).
- How can I practise Microsoft OA online for free?
- Wrexa Edge gives you 3 free full-length Microsoft OA mock tests — with instant scoring, detailed explanations and analytics — plus 47 more with Pro. Start practising in under a minute, no card required.
- What is the difficulty level of Microsoft OA?
- Microsoft OA is rated Advanced difficulty on Wrexa Edge. Advanced-level: high-stakes exam with rigorous content depth. Expect 4-8 months of structured prep. A Microsoft-style coding online-assessment mock — trees and data structures, arrays/strings, and graphs, in test-case-style MCQ form. Microsoft leans on data-structure fluency and clean design; no negative marking. · Official language: English.
- How long is the Microsoft OA exam?
- Microsoft OA runs for 85 minutes total across 3 sections. On Wrexa Edge the timer is enforced exactly as on the real exam — including no inter-section breaks.
- What topics are covered in Microsoft OA?
- Microsoft OA is split into: Trees & Data Structures, Arrays & Strings, Graphs & Traversal. Each section is timed and weighted separately. A Microsoft-style coding online-assessment mock — trees and data structures, arrays/strings, and graphs, in test-case-style MCQ form. Microsoft leans on data-structure fluency and clean design; no negative marking. · Official language: English.
- What tools or aids are allowed during Microsoft OA?
- No special tools are required.
- Is the Microsoft OA test adaptive?
- No — Microsoft OA is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
- How many Microsoft OA mock tests does Wrexa Edge offer?
- Wrexa Edge generates 50 distinct Microsoft OA variants — each with different question content, not just shuffled options — the first 3 free for everyone and 47 more with Pro. That's 1700 unique practice questions in the real test-day interface.
- Is there a free Microsoft OA test series 2026?
- Yes. The Wrexa Edge Microsoft OA test series for 2026 gives you 3 free full-length mock tests (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.
- Are Microsoft OA previous year question–style papers included?
- Every Microsoft OA mock is modelled on the official exam pattern and the style of previous years' papers — the same 34-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
- Which is the best free Microsoft OA mock test online?
- Wrexa Edge's Microsoft OA mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.
- Can I take the Microsoft OA mock test on mobile?
- Yes. Microsoft OA mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.
- What is the Microsoft OA syllabus?
- The Microsoft OA syllabus maps to its 3 sections: Trees & Data Structures, Arrays & Strings, Graphs & Traversal. Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.
- What is the eligibility for Microsoft OA?
- Microsoft’s software roles target computer-science and allied graduates, with skill-first pipelines common; there is no bar to practising the format here. Verify the specific role on Microsoft Careers. Wrexa Edge focuses on realistic Microsoft OA practice: 3 free full-length mocks in the exact exam pattern, ready whenever you are.
- When is the Microsoft OA exam and how should I prepare?
- Official Microsoft OA exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you 3 free Microsoft OA mocks with instant scoring so you can track your readiness week by week.
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