Waec Computer Studies Past Questions and Answers

Question 91:

• WAEC 2021

The part of the computer system shown in Figure 11 is used to ____________

A. Perform memory test
B. Power on or off the computer
C. Print a document from the computer
D. Reset the computer to factory setting

Question 92:

• WAEC 2021

A single character in an EBCDIC encoding system can be represented using ____________

A. 4 bits
B. 6 bits
C. 8 bits
D. 16 bits

Question 93:

• WAEC 2021

Evaluate 10011\(_2\) - 1111\(_2\) ____________

A. 00010\(_2\)
B. 00100\(_2\)
C. 01000\(_2\)
D. 10000\(_2\)

Question 94:

• WAEC 2021

The binary number 0.1101 in decimal is ____________

A. 0.8125
B. 0.8215
C. 0.8225
D. 0.8512

Question 95:

• WAEC 2021

To prevent unforeseen data loss, a user must ____________

A. Edit the data
B. Create the data
C. Backup the data
D. Defragment the data