21 Aug CSC 155 Exam MCQs

Question 1
1. Main memory is called ____.

read only memory

random access memory

read and write memory

random read only memory

3 points
Question 2
1. The ____ is the brain of the computer and the single most expensive piece of hardware in your personal computer.

MM

ROM

RAM

CPU

3 points
Question 3
1. The ____ carries out all arithmetic and logical operations.

IR

ALU

CU

PC

3 points
Question 4
1. The ____ holds the instruction currently being executed.

CU

IR

PC

ALU

3 points
Question 5
1. When the power is switched off, everything in ____ is lost.

main memory

secondary storage

hard disks

floppy disks

3 points
Question 6
1. ____ programs perform a specific task.

Application

System

Operating

Service

3 points
Question 7
1. The ____ monitors the overall activity of the computer and provides services.

Central Processing Unit

operating system

arithmetic logic unit

control unit

3 points
Question 8
1. Which of the following is NOT an output device?

monitor

printer

CPU

secondary storage

3 points
Question 9
1. ____ represent information with a sequence of 0s and 1s.

Analog signals

Application programs

Digital signals

System programs

3 points
Question 10
1. A sequence of eight bits is called a ____.

binary digit

byte

character

double

3 points
Question 11
1. The digit 0 or 1 is called a binary digit, or ____.

bit

bytecode

Unicode

hexcode

3 points
Question 12
1. The term GB refers to ____.

giant byte

gigabyte

group byte

great byte

3 points
Question 13
1. ____ consists of 65,536 characters.

ASCII-8

ASCII

Unicode

EBCDIC

3 points
Question 14
1. A program called a(n) ____ translates instructions written in high-level languages into machine code.

assembler

decoder

compiler

linker

3 points
Question 15
1. A program called a(n) ____ combines the object program with the programs from libraries.

assembler

decoder

linker

compiler

3 points
Question 16
1. Consider the following C++ program.

#include <iostream>
using namespace std;

int main()
{
cout << “Hello World ”
return 0;
}

In the cout statement, the missing semicolon in the code above will be caught by the ____.

compiler

editor

assembler

control unit

3 points
Question 17
1. A program that loads an executable program into main memory is called a(n) ____.

compiler

loader

linker

assembler

3 points
Question 18
1. A step-by-step problem-solving process in which a solution is arrived at in a finite amount of time is called a(n) ____.

algorithm

linker

analysis

design

3 points
Question 19
1. To develop a program to solve a problem, you start by ____.

analyzing the problem

implementing the solution in C++

designing the algorithm

entering the solution into a computer system

3 points
Question 20
1. In C++, the mechanism that allows you to combine data and operations on the data into a single unit is called a(n) ____.

object

class

function

algorithm

3 points
Question 21
1. Which of the following is a legal identifier?

program!

program_1

1program

program 1

3 points
Question 22
1. All of the following are examples of integral data types EXCEPT ____.

int

char

double

short

3 points
Question 23
1. Which of the following is a valid char value?

-129

-128

128

129

3 points
Question 24
1. The value of the expression 17 % 7 is ____.

1

2

3

4

3 points
Question 25
1. The expression static_cast<int>(9.9) evaluates to ____.

9

10

9.9

9.0

3 points
Question 26
1. The length of the string “computer science” is ____.

14

15

16

18

3 points
Question 27
1. Suppose that count is an int variable and count = 1. After the statement count++; executes, the value of count is ____.

1

2

3

4

3 points