Computer Studies 2021 Waec Past Questions and Answers

Question 36 :

• 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 37 :

• WAEC 2021

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

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

Question 38 :

• WAEC 2021

The binary number 0.1101 in decimal is ____________

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

Question 39 :

• 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

Question 40 :

• WAEC 2021

The file access method shown in Figure 12 is called ____________

A. Hashed access
B. Indexed access
C. Random access
D. Sequential access