Home ยป Past Questions ยป Computer-studies ยป Waec ยป Page 25
505

The total possible combinations of the input variables for a logic gate containing three input variables is 

  • A. 3
  • B. 4
  • C. 8
  • D. 12
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506

A collection of wires through which data are transmitted from one part of the computer to another is known as 

  • A. address
  • B. bus
  • C. driver
  • D. register
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507

What factors will motivate a field engineer into choosing a notebook computer over a desktop computer?

  • A. Cost, convenience and battery life
  • B. Cost, size and convenience
  • C. Size, convenience and battery life
  • D. Size, cost and battery life
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508

The Slide Rule is accurate to 

  • A. 1-2 decimal places
  • B. 3-4 decimal places
  • C. 5 decimal places
  • D. 6 decimal places
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509

Which of the following statements is true about super computers? They

  • A. can fit on a single small chip
  • B. are easily affordable
  • C. can process billions of operations in a second
  • D. are found across various homes and offices
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510

Which of the following descriptions is not true about data?

  • A. It can be converted to information
  • B. is a collection of raw facts and figures
  • C. is unorganized
  • D. is used for decision making
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511

The sequence of operation of a computer is 

  • A. accept data, process date and produce output
  • B. accept data, produce data and produce information
  • C. produce data, supply data and produce output
  • D. process data, produce data and display information
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512

Data created by the user is called 

  • A. primary data
  • B. qualitative data
  • C. quantitative data
  • D. secondary data
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513

Quantitative data can exist in 

  • A. continuous form only
  • B. continuous and discrete forms
  • C. nominal and ordinal forms
  • D. ordinal form only
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514

Which of the following ideals is protected by copyright?

  • A. Ideas
  • B. Profit
  • C. Expression of ideas
  • D. Inexperience
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515

The Use of electronic systems to send an unsolicited e-mail to someone’s address is known as ______

  • A. Hacking
  • B. Spamming
  • C. Internet fraud
  • D. Piracy
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516

An advantage of sequential access over serial access is that_______

  • A. Sequential file is slow
  • B. Sequential file is detailed
  • C. Sequential file does not use key
  • D. Individual records can be located more quickly
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517

Which of the following statements is not true about a computer file?

  • A. It is very fast to access any record within a file
  • B. It is created electronically
  • C. Initial setup is inexpensive
  • D. File creation and access are less laborious
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518

The transaction file can also be described as _______

  • A. Master File
  • B. Movement file
  • C. Reference file
  • D. Historical file
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519

The conversion of 11001 \(_2\) to base 10 equals_______

  • A. 30
  • B. 28
  • C. 25
  • D. 20
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520

In hexadecimal number system, B, D, E represent_________

  • A. 11, 12, 13 respectively
  • B. 11, 13, 14 respectively
  • C. 13, 14, 15 respectively
  • D. 14, 16, 17 respectively
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521

Given that 26 \(_10\) = X \(_2\), X is _________

  • A. 11011
  • B. 11010
  • C. 11110
  • D. 10111
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522

Evaluate the BASIC statement:

LET Z = 4*W^2  + 2*Y
Given that W = 5 and Y = 10

  • A. 50
  • B. 80
  • C. 100
  • D. 120
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523

The process of restarting a computer is known as ________

  • A. Cold booting
  • B. Warm booting
  • C. Resume booting
  • D. Restart booting
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524

The Instruction fetched into the CPU is decoded by the___________

  • A. Primary memory
  • B. Program counter
  • C. ALU
  • D. Control unit
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525

Which of the following statements is true about registers?

  • A. It is storage area around CPU
  • B. It is situated beside the CPU
  • C. It is situated beside the memory
  • D. It is a special high speed storage area within the CPU
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