Technical Extra Question Bank

Use this for rapid MCQ recall.

Flash MCQs

1. Stack principle?
   Answer: LIFO

2. Queue principle?
   Answer: FIFO

3. BFS uses?
   Answer: Queue

4. DFS uses?
   Answer: Stack/recursion

5. Binary search needs?
   Answer: Sorted array

6. Binary search complexity?
   Answer: O(log n)

7. Merge sort complexity?
   Answer: O(n log n)

8. Quick sort worst case?
   Answer: O(n²)

9. Hashing average search?
   Answer: O(1)

10. Process is?
    Answer: Program in execution

11. Thread shares?
    Answer: process memory/address space

12. Round Robin uses?
    Answer: time quantum

13. SJF advantage?
    Answer: minimum average waiting time if burst times known

14. Deadlock condition list?
    Answer: mutual exclusion, hold and wait, no preemption, circular wait

15. Paging block size?
    Answer: fixed

16. Segmentation block size?
    Answer: variable/logical

17. Page fault means?
    Answer: required page missing from RAM

18. TCP property?
    Answer: reliable, connection-oriented

19. UDP property?
    Answer: connectionless, faster, unreliable

20. DNS port?
    Answer: 53

21. HTTP port?
    Answer: 80

22. HTTPS port?
    Answer: 443

23. SSH port?
    Answer: 22

24. Switch uses?
    Answer: MAC address

25. Router uses?
    Answer: IP address

26. ARP maps?
    Answer: IP to MAC

27. DHCP does?
    Answer: assigns IP automatically

28. ADC converts?
    Answer: analog to digital

29. DAC converts?
    Answer: digital to analog

30. Microcontroller includes?
    Answer: CPU + memory + I/O

31. UART is?
    Answer: asynchronous serial communication

32. SPI lines?
    Answer: MOSI, MISO, SCLK, SS

33. I2C lines?
    Answer: SDA, SCL

34. Watchdog does?
    Answer: resets hung system

35. RTOS key feature?
    Answer: deterministic response

36. Waterfall is?
    Answer: sequential

37. Agile is?
    Answer: iterative and incremental

38. Scrum cycle is called?
    Answer: sprint

39. Verification asks?
    Answer: are we building the product right?

40. Validation asks?
    Answer: are we building the right product?

41. Unit testing tests?
    Answer: individual unit/module

42. Integration testing tests?
    Answer: module interaction

43. System testing tests?
    Answer: full system

44. UAT means?
    Answer: user acceptance testing

45. Smoke testing means?
    Answer: basic build verification

46. Regression testing means?
    Answer: test old features after changes

47. Severity means?
    Answer: impact

48. Priority means?
    Answer: urgency

49. Selenium is for?
    Answer: web UI automation

50. Postman is for?
    Answer: API testing