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Ultimate Guide to Cracking the Cisco OA in 2025
If you’re applying to Cisco in 2025, chances are you’ll face the Cisco Online Assessment (OA) early in the recruitment process. Whether you’re targeting a software engineering, network engineering, or internship position, passing the OA is often the first major hurdle.
This guide covers everything you need to know to prepare effectively, avoid common pitfalls, and maximize your chances of success.
What Is the Cisco OA?
The Cisco OA is an automated, timed online test sent to candidates shortly after their resume is shortlisted. It evaluates:
Technical Problem Solving (e.g. coding, data structures, algorithms)
CS Fundamentals (e.g. networking, OS, DBMS, etc.)
Behavioral or Situational Judgment Skills
How to Prepare for the Cisco OA in 2025
- Master the Coding Section
Most Cisco roles will require at least one coding problem. These are typically LeetCode-style questions.
Key topics to cover:
Arrays and Strings
Hash Tables / Maps
Recursion and DFS/BFS
Two Pointers and Sliding Window
Sorting and Searching
Tools to Use:
LeetCode – Focus on Easy to Medium problems
HackerRank – Cisco sometimes uses this platform directly
GeeksforGeeks – Good for quick reviews
ProgramHelp – Good for Cisco OA
- Revise Core Computer Science Subjects
You can expect technical MCQs covering:
Data Structures (Lists, Trees, Heaps, Graphs)
Algorithms & Time Complexity
Operating Systems (Processes, Threads, Scheduling)
Computer Networks (OSI model, TCP/IP, routing)
Databases (SQL, normalization, transactions)
Focus on conceptual clarity rather than memorization.
- Behavioral & Situational Judgment Questions
These evaluate your:
Teamwork and communication
Conflict resolution skills
Decision-making in ambiguous scenarios
Tips:
Stay consistent in your responses
Align with Cisco’s values: innovation, collaboration, and integrity
Use the STAR method when appropriate (Situation, Task, Action, Result)
Time Management Tips During the OA
Skim the entire test first to budget your time accordingly
Don’t get stuck on one hard coding question; move on and return later if time permits
Always test your code against edge cases
For MCQs, eliminate obvious wrong answers first, then make an educated guess if needed
Real Candidate Experiences (2024–2025)
"I received 2 coding questions: one on string manipulation and another on trees. The time was tight, but both were medium level."
— Software Engineering Applicant"As a networking candidate, my MCQs had a heavy focus on OSI layers, subnetting, and TCP concepts."
— Network Engineering Intern Applicant
Final Thoughts
The Cisco OA isn’t about perfection—it’s about demonstrating your problem-solving mindset, technical foundation, and fit for the role. With the right preparation strategy and mindset, you can absolutely crack it.
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