Computer Studies JAMB, WAEC, NECO AND NABTEB Official Past Questions

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22

Which of the following options is a biometric data?     

  • A. Gender
  • B. Password
  • C. Date of birth
  • D. Pattern of eye iris
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23

The number 28 in binary is?       

  • A. 1001
  • B. 11001
  • C. 110011
  • D. 11100
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24

The MS-Windows shortcut keys to initiate warm booting is?       

  • A. Alt+ f4
  • B. Ctrl+ Alt + Del
  • C. Ctrl+Esc
  • D. Ctn +Shift + Del
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25

The process of testing the logic of programs to ensure they give correct result is known as?         

  • A. algorithm
  • B. desk checking
  • C. flowcharting
  • D. table checking
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26

The command line prompt of MS-DOS operating system is represented as?    

  • A. C:>
  • B. C:\
  • C. C:\>
  • D. C\:>
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27

The algebraic equation for the AND gate with input variables A and B is?     

  • A. X = A.B
  • B. X =A/B
  • C. X= A-B
  • D. X = A+B
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28

The conversion of readable data to unreadable codes in order to prevent unauthorised access is known as?    

  • A. authentication
  • B. encryption
  • C. encoding
  • D. decryption
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29

A row in a database table is referred to as? 

  • A. attribute
  • B. data item
  • C. field
  • D. record
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30

The ASCII chart control characters using numeric codes ranging from?      

  • A. 0 to 124
  • B. 0 to 125
  • C. 0 to 127
  • D. 0 to 128
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31

The process of restarting the computer system is known as?     

  • A. cold booting
  • B. hard booting
  • C. hot bathing
  • D. warm booting
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32

The speed of data transfer in the computer can be determined in terms of? 

 

  • A. protocols and  bus speed
  • B. bus speed and bus width
  • C. bus width and storage media
  • D. bus speed and storage media
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33

Which of the following components are data communication equipment?

I. Scanner ll. Hub lIl. Modem
 

  • A. I and Il only
  • B. I and lll only
  • C. II and IIl only
  • D. I, Il and III
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34

Which of the following options is not an advantage of  linear bus topology?     

  • A. It requires less cable length
  • B. It ensures easy casting
  • C. Additional nodes can be connected  easily
  • D. Terminators are required at both ends of the
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35

The following components are network interconnecting devices EXCEPT?   

  • A. hub
  • B. modem
  • C. router
  • D. webcam
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36

which of the following network cables offers highest data transmission?

  • A. Coaxial
  • B. Fibre optic
  • C. Telephone line
  • D. Twisted pair
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37

The three levels of programming language?     

  • A. assembly language, low level language and high level language,
  • B. java, C language and pascal
  • C. machine language low level language and high level language
  • D. machine language, machine code and assembly language
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38

The following are relational operators in QBASIC?  

  • A. <
  • B. >
  • C. #
  • D. =
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39

The following programs are general-purpose application software except?     

  • A. CorelDraw
  • B. Editor
  • C. Ms Access
  • D. MS Word
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40

Which of the following programs is an application specific?     

  • A. CorelDraw
  • B. Microsoft Access   .
  • C. Word
  • D. Payroll system
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41

Identify the logic gate in figure 2

  • A. AND gate
  • B. NAND gate
  • C. NOR gate
  • D. OR gate
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42

Figure 1 is a logic gate. Use it to answer the question below.

The logic gate represented in Figure 1 is called

 

  • A. AND gate
  • B. NAND gate
  • C. NOR gate
  • D. OR gate
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