Problem Solving (DSA) Certification Test (Basic)
A free 60-minute Problem Solving (DSA) skill test at basic level. Pass with 60% to earn a verifiable CodeKairo credential and a profile frame.
- Skill: Problem Solving (DSA)
- Level: Basic
- Duration: 60 minutes
- Questions: 17
- Pass mark: 60% (distinction at 85%)
- Credential: Verifiable, valid for 2 years
Complexity, the core data structures and the classic techniques, asked as questions — then two easy problems in the language of your choice.
Sections
| Section | Questions | Time | Kind | Marks each |
|---|---|---|---|---|
| Concepts | 15 | 20 min | Multiple choice | 1 |
| Coding | 2 | 40 min | Coding | 12.5 |
What it covers
- Complexity analysis — practise with Data structures MCQs
- Arrays & strings — practise with Array problems
- Hashing — practise with Hash table problems
- Linked lists — practise with Data structures MCQs
- Stacks & queues — practise with Stack problems
- Trees & BSTs — practise with Depth-first search problems
- Sorting & searching — practise with Binary search problems
- Recursion & DP — practise with Dynamic programming problems
Rules
This is a certification test. Pass with 60% and you earn a verifiable CodeKairo credential — 85% earns it with distinction. It is valid for 2 years.
- The sections are timed separately and taken in order. A section you leave cannot be reopened.
- The server keeps the clock. Closing the tab or reloading does not pause it.
- Your answers save as you go and survive a refresh.
- The coding section takes any language. Run checks the visible cases; Submit runs every hidden case.
- You may sit this test again 7 days after a sitting ends. Your best result stands.
Integrity. Work alone and from what you know. Pasting into the editor is switched off during the test, and leaving the test tab is recorded. A sitting that looks assisted can be reviewed, and a credential earned that way is revoked.
The answers are never shown — not during the test and not after it. Your result breaks the score down by topic and points you to what to practise.