Computer Science Questions & Answers

Which of the following controls the way in which the computer system functions and provides a means by which users can interact with the computer

CPU

application software

operating system

ALU

View answer & explanation

Correct answer is C

Operating system controls the way in which the computer system functions and provides a means by which users can interact with the computer

In computer architecture, the type of bus that connects the major components of a computer system is

address

data bus

control bus

system bus

View answer & explanation

Correct answer is D

In computer architecture, the system bus is the main communication route that connects the major components of a computer system, such as the CPU, memory, and input/output devices. It is composed of the data bus, address bus, and control bus. Therefore, the correct answer is 'system bus'.

Using Boolean identities, reduce the given Boolean expression:
A(A+1) + A(B+0) + C.1

A + B + C

A.B.C

A.B + C

A + C

View answer & explanation

Correct answer is D

Using Boolean identities, the given Boolean expression A(A+1) + A(B+0) + C.1 can be reduced as follows: A.1 + A.B + C = A + A.B + C = A + C. The Boolean identity A + A.B = A is used here, which states that if A is true, the whole expression is true regardless of the value of B.

The first stage of data processing activities is ?

Manipulation

Collection

Conversion

Sorting

View answer & explanation

Correct answer is B

The first stage of data processing is the collection or gathering of data and recording it in a usable form

One of the following is not a good way to prevent virus

encryption

use of firewall

carelessly exposing your vital and personal information