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 121:

  A 2-input gate that can be used to pass a digital waveform unchanged at certain times and inverted at other times is ___________

  Options:
  A) AND gate
  B) OR gate
  C) NAND gate
  D) XOR gate
  Show Answer
  The correct answer is D .
• Question 122:

  At what stage in system development life cycle are all data documented in the form of detailed data flow diagrams(DFDs)

  Options:
  A) System design
  B) Feasibility study
  C) System analysis
  D) Investigative study
  Show Answer
  The correct answer is C .
• Question 123:

  In the files, if order of operation on two or more files are similar, then operation will be

  Options:
  A) complex
  B) simple
  C) sequential
  D) combinational
  Show Answer
  The correct answer is C .
• Question 124:

  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 125:

  Which of the following system software resides in the main memory always?

  Options:
  A) Text editor
  B) Assembler
  C) Linker
  D) Loader
  Show Answer
  The correct answer is D .
• Question 126:

  Which number base system is used by low level languages

  Options:
  A) Duodecimal
  B) Binary
  C) Hexadecimal
  D) Decimal
  Show Answer
  The correct answer is B .
• Question 127:

  Which of the following is not a type of logic gate

  Options:
  A) XOR
  B) OR
  C) AND
  D) DOR
  Show Answer
  The correct answer is D .
• Question 128:

  Which of the following is an example of graphics software ?

  Options:
  A) Microsoft word
  B) Adobe Illustrator
  C) Microsoft powerpoint
  D) MS Access
  Show Answer
  The correct answer is B .
• Question 129:

  Which of the following is not a type of computer on the basis of operation?

  Options:
  A) Remote
  B) Hybrid
  C) Analog
  D) Digital
  Show Answer
  The correct answer is A .
• Question 130:

  A device that sends and receives printed pages or images over telephone lines by digitizing the material with an internal optical scanner and transmitting the information as electronic signals is a

  Options:
  A) ATM
  B) scanner
  C) GSM
  D) fax machine
  Show Answer
  The correct answer is D .