WAEC Past Questions and Answers - Page 2566

12,826.

Which of the following is not a method of accessing file?

A.

Circular

B.

Random

C.

Serial

D.

Sequential

Correct answer is A

No explanation has been provided for this answer.

12,827.

The ASCII code for the word NOT can be written as?

A.

101010010011111001110

B.

100111010011111010100

C.

100111110101001001110

D.

100111010101001111

Correct answer is B

No explanation has been provided for this answer.

12,828.

The cell labelled ll in the table represents?

A.

1001101

B.

1010100

C.

1010101

D.

1010110

Correct answer is B

No explanation has been provided for this answer.

12,829.

Use the table below to answer questions 19 to 21
Character Decimal code ASCII CODE
N 78 1001110
O 1 1001111
T 84 11

The cell labelled I in the table represents?         

A.

72

B.

74

C.

75

D.

79

Correct answer is D

No explanation has been provided for this answer.

12,830.

A field chosen to uniquely identify every record in a database is?

A.

foreign key

B.

local key

C.

primary key

D.

secondary key

Correct answer is C

No explanation has been provided for this answer.