WAEC Computer Science Past Questions & Answers - Page 47

231.

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.

232.

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.

233.

Which of the following views is used to create data base objects in Microsoft Access? 

A.

Design view

B.

Datasheet view

C.

Layout view

D.

Normal view

Correct answer is A

No explanation has been provided for this answer.

234.

In a star network, each node must?

A.

be connected directly to adjacent node

B.

be connected directly to a central network hub

C.

be connected directly to a common backbone cable

D.

possess a token before it can transmit signal to adjacent node

Correct answer is A

No explanation has been provided for this answer.

235.

The expression DEPOSIT (1, 10) stands for an array with?  

A.

1 element

B.

11 element

C.

10 element

D.

no element

Correct answer is C

No explanation has been provided for this answer.