Computer Studies 2021 Waec Past Questions and Answers

Question 6 :

• WAEC 2021

Use the logic gate in Fig 2 to answer question 13.
Which of the following statements is true about logic gates X and Y?

A. They both have multiple output variables
B. The output state of each depends on the input state
C. The output is true only if all inputs are true
D. They are both equivalent gates.

Question 7 :

• WAEC 2021

The logical equation for the logic circuit in Figure 3 is ____________

A. \(\overline{A+B}\) \(\overline{C}\)
B. Z=A.B+C
C. Z=A+B.C
D. Z=\(\overline{A.B}\) + \(\overline{C}\)

Question 8 :

• WAEC 2021

The operation of a computer and peripherals attached to it is controlled by

A. Application
B. Hardware
C. Live ware
D. System software

Question 9 :

• WAEC 2021

COBOL was developed for ____________

A. Business operations
B. Game developers
C. Mobile application developers
D. Search engines optimization

Question 10 :

• WAEC 2021

The operating system performs the following operations except ____________

A. Organization of data
B. Resource allocation
C. Creation of data
D. Arrangement of files