CDCDAC Prep

Free CCAT Practice Questions (2026)

Sample questions from Section A (Aptitude), Section B (Computer Concepts), and Section C (Advanced Topics). Click Show Answer to reveal solution and explanation.

Quantitative Aptitude

1. If 20% of x is 40, what is the value of x?

  • A. 100
  • B. 150
  • C. 200
  • D. 120

2. What comes next in the series: 2, 5, 10, 17, 26, ?

  • A. 35
  • B. 36
  • C. 37
  • D. 38

3. A train 200 m long passes a stationary pole in 10 seconds. Its speed is:

  • A. 18 m/s
  • B. 20 m/s
  • C. 22 m/s
  • D. 25 m/s

Computer Concepts (Section B)

4. Which sorting algorithm guarantees O(n log n) worst-case time complexity?

  • A. Bubble Sort
  • B. Quick Sort
  • C. Merge Sort
  • D. Selection Sort

5. Which protocol dynamically assigns IP addresses to devices?

  • A. DNS
  • B. SMTP
  • C. DHCP
  • D. FTP

6. The OSI model has how many layers?

  • A. 4
  • B. 5
  • C. 6
  • D. 7

Advanced Topics (Section C)

7. In C, `sizeof(int)` returns which value?

  • A. 2
  • B. 4
  • C. 8
  • D. Platform-dependent

8. Which normal form eliminates partial functional dependencies?

  • A. 1NF
  • B. 2NF
  • C. 3NF
  • D. BCNF

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