JAMB Computer Science Past Questions & Answers - Page 23

111.

The java interpreter translates a java program from ____________ to machine language

A.

nibble

B.

bit

C.

byte code

D.

high level language

Correct answer is C

The java interpreter translates a java program from ____________Byte code. This is a program code that has been compiled from source code into low level code designed for a software interpreter. to machine language

112.

The logical structure of the database can be depicted through its ______

A.

Domain

B.

Data model

C.

Architecture

D.

Schemas

Correct answer is B

Data model. It is the logical inter relationships and data flow between different data elements involved in the information word. Through the flow chart, the logical structure of a database can be depicted

113.

A collection of facts and figures is known to be _________

A.

Data

B.

Database

C.

sequenced data

D.

structural data

Correct answer is A

Data are a set of values of qualitative or quantitative variables about one or more persons or objects, while a datum (singular of data) is a single value of a single variable. They are individual facts, statistics, or items of information, often numeric

114.

When does the output of a NOR gate =0?

A.

whenever 0 is present at input

B.

only when all input =0

C.

whenever 1 is present at input

D.

only when all input =1

Correct answer is C

The NOR gate is a digital logic gate that implements logical NOR - it behaves according to the truth table to the right. A HIGH output (1) results if both the inputs to the gate are LOW (0); if one or both input is HIGH (1), a LOW output (0) results

115.

The number of input combination for a 4 input gate is ______

A.

9

B.

8

C.

15

D.

16

Correct answer is D

16 possible combinations
So, a 4-input AND gate has 16 possible combinations, 5 inputs would be 32 outputs, and so on.