PSC Lecturer in Computer Application Model Questions and Answers

26. How can you disable extended selection mode?
(A) Press F8 again to disable
(B) Press Del to disable
(C) Press Esc to disable
(D) Press Enter to disable
Answer: C

27. Maximum length of DOS command using any optional parameter is:
(A) 26 Character
(B) 87 Character
(C) 127 Character
(D) None of above
Answer: C

28. Which of the following helps to reduce spelling error in the document?
(A) Auto format
(B) Auto correct
(C) Smart tags
(D) Auto test
Answer: B

29. Disk copy command in DOS is used to:
(A) Copy a file
(B) Copy contents of one floppy disk to another
(C) Copy contents of CD-ROM to another
(D) All of the above
Answer: B

30. What is gutter margin?
(A) Margin that is added to the left margin when printing
(B) Margin that is added to right margin when printing
(C) Margin that is added to the binding side of page when printing
(D) Margin that is added to the outside of the page when printing
Answer: C

31. VGA is:
(A) Video Graphics Array
(B) Visual Graphics Array
(C) Volatile Graphics Array
(D) Video Graphics Adapter
Answer: A

32. Disk scheduling includes deciding:
(A) Which should be accessed next?
(B) Order in which disk access requests must be serviced
(C) The physical location of the file
(D) The logical location of the file
Answer: B

33. CD-ROM stands for:
(A) Compactable Read Only Memory
(B) Compact Data Read Only Memory
(C) Compactable Disk Read Only Memory
(D) Compact Disk Read Only Memory
Answer: D

34. Which technique is used by operating system to execute several programs concurrently by switching back and forth?
(A) Partitioning
(B) Multitasking
(C) Windowing
(D) Paging
Answer: C

35. Dispatcher function is to:
(A) Put tasks in I/O wait
(B) Schedule tasks in processor
(C) Change task priorities
(D) All of the above
Answer: A

36. Where can you set the shading color for a range of cells in Excel?
(A) Chose required color form Patterns tab of Format cells dialog box
(B) Chose required color on Fill Color tool in Formating toolbar
(C) Chose required color on Fill Color tool drawing toolbar
(D) All of the above
Answer: D

37. Operating system is:
(A) a collection of hardware components
(B) a collection of input outputs devices
(C) a collection of software routines
(D) all of the above
Answer: C

38. Which enables us to send the same letter to different persons?
(A) macros
(B) template
(C) mail merge
(D) none
Answer: C

39. Which one is example for network database?
(A) Unify
(B) Ingress
(C) IDMS
(D) None of the above
Answer: C

40. Which of the following format you can decide to apply or not in Auto Format dialog box?
(A) Number format
(B) Border format
(C) Font format
(D) All of the above
Answer: D

41. Which scheduling policy is best suited for time sharing operating systems?
(A) Shortest job first
(B) Round robin
(C) First come first serve
(D) Elevator
Answer: B

42. Reference bit is used for:
(A) Implementing LRU page replacement algorithm
(B) Implementing NRU algorithm
(C) To check page table entry in the cache memory
(D) None of the above
Answer: B

43. Which file is the batch file that is read while booting a computer?
(A) Autoexec.bat
(B) Auto-batch
(C) Auto executive.bat
(D) Auto.bat
Answer: A

44. Macintosh computer uses:
(A) System 7.0
(B) AU/X
(C) Xenix
(D) None of the above
Answer: B

45. In 3-tier client/server applications, the business logic lies at …………..
(A) The client
(B) The Database Server
(C) Divided between client and server alternatively
(D) Middle Tier
Answer: D

46. Copy and Xcopy are same in the sense:
(A) Both are internal command of DOS
(B) Both are external command of DOS
(C) Both can be used to copy file or group of files
(D) Both (A) and (B)
Answer: C

47. For two variables, n=2, the number of possible Boolean functions is:
(A) 4
(B) 8
(C) 16
(D) 12
Answer: A

48. The one major advantage of CMOS is its:
(A) Low propagation delay
(B) High propagation delay
(C) Very low propagation delay
(D) Very high propagation delay
Answer: A

49. 64K memory contains how many words of 8 bits each:

(A) 65,536
(B) 64,536
(C) 65,436
(D) 65,546
Answer: A

50. The sum of −6 and −13 using 2’s complement addition is:
(A) 11100011
(B) 11110011
(C) 11001100
(D) 11101101
Answer: D