Computer-Studies Exam Past Questions and Answers | JAMB, WAEC and NECO

Computer Studies covers general knowledge of computers, computing terms, and technologies. It focuses on building interest and confidence in using computers.

• Question 171:

  Which of these storage devices can act as a buffer between the CPU and the main memory ?

  Options:
  A) Hard disk
  B) Floppy disk
  C) Cache Memory
  D) Flash drive
  Show Answer
  The correct answer is C .
• Question 172:

  The Output will be a HIGH for any case when one or more inputs are one for a(an)

  Options:
  A) OR gate
  B) AND gate
  C) NOR gate
  D) NOT gate
  Show Answer
  The correct answer is A .
• Question 173:

  What is the function of the escape key ?

  Options:
  A) to shutdown the computer
  B) to start an application
  C) to interrupt or cancel the current process or running program
  D) to delete a file/folder
  Show Answer
  The correct answer is C .
• Question 174:

  What does R stands for in the CRUD acronym ?

  Options:
  A) Retrieve
  B) Redirect
  C) Read
  D) Relate
  Show Answer
  The correct answer is C .
• Question 175:

  When does the output of a NOR gate =0?

  Options:
  A) whenever 0 is present at input
  B) only when all input =0
  C) whenever 1 is present at input
  D) only when all input =1.
  Show Answer
  The correct answer is C .
• Question 176:

  Using Boolean identities, reduce the given Boolean expression:
  A(A+1) + A(B+0) + C.1

  Options:
  A) A + B + C
  B) A.B.C
  C) A.B + C
  D) A + C
  Show Answer
  The correct answer is D .
• Question 177:

  The last cycle of data processing where data and information are preserved for future is called

  Options:
  A) processing
  B) recording
  C) storage
  D) output
  Show Answer
  The correct answer is C .
• Question 178:

  An action performed in the GUI operating systems to hide a window but keep the program running in the background is ?

  Options:
  A) hide
  B) multitasking
  C) minimize
  D) maximize
  Show Answer
  The correct answer is C .
• Question 179:

  The number of input combination for a 4 input gate is ______

  Options:
  A) 9
  B) 8
  C) 15
  D) 16
  Show Answer
  The correct answer is D .
• Question 180:

  System software has which major function?

  Options:
  A) Giving utility
  B) making navigation easier for user
  C) controlling the computer system
  D) maintain the system
  Show Answer
  The correct answer is C .