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Collection Lect 2-10 _ COA MCQ T3 2023

Total questions: 100

Worksheet time: 1hrs 2mins

Name
Class
Date
1.

individual blocks or records have a unique address based on physical location with __________

a)

associative

b)

physical access

c)

direct access

d)

sequential access

2.

_________ is the simplest mapping technique and maps each block of main memory into only one possible cache location.

a)

Direct mapping

b)

Associative mapping

c)

Set associative mapping

d)

None of the above

3.

Which of the following has the capability to store the information permanently?

 

a)

ROM

b)

RAM

c)

DRAM

d)

Both RAM and ROM

4.

Component of CPU which is responsible for comparing the contents of two pieces of data is _______________.

 

a)

Register

b)

Control Unit (CU)

c)

Memory

d)

Arithmetic Logic Unit (ALU)

5.

Computer operation in which new word replaced the old one in a particular memory location is termed as ­­­­­­­­­­___________________________.

 

a)

load Operation.

b)

store Operation.

c)

read operation.

d)

write operation.

6.

To determine which instruction to be executed, the control unit will read the contents of __________.

a)

Program counter

b)

Accumulator

c)

Memory address register

d)

Memory buffer register

7.

In nonvolatile archival storage, information remains when the power is turned off.

a)

True

b)

False

8.

Select the correct hierarchy for the memory in term of read / write operation (speed: slowest to fastest).

A.

B.

C. D.

a)

Secondary memory, primary memory, register, solid state drive (SSD)

b)

Register, cache, read only memory (ROM), random access memory (RAM)

c)

Solid state drive (SSD), random access memory (RAM), cache, register

d)

Primary memory, solid state drive (SSD), cache, register

9.

What is (are) the purpose of Status Register?

i- Allow computers to keep track of special condition of arithmetic carry and overflow

ii- Allow computers to keep track of special condition of Internal computer error

iii- Allow computers to keep track of special condition of power failure

a)

i and ii

b)

i and iii

c)

ii and iii

d)

all of the above

10.

Any data or instructions you enter into the memory of a computer

a)

Input

b)

Output

c)

ALU

d)

CPU

11.

An I/O module has TWO major functions:

a)

Interface to the processor and memory via the system bus.

b)

Interface to one or more peripheral devices by tailored data links.

c)

Used to perform arithmetic and logic operation

d)

Performs most of the processing inside a computer

12.

Select THREE categories external devices

a)

Human readable

b)

Machine readable

c)

Communication

d)

Random Access Memory

13.

All are the function I/O module except:

a)

Control & Timing

b)

CPU Communication

c)

Error detection

d)

Direct Memory Access (DMA)

14.

Select THREE I/O techniques

a)

Direct memory access

b)

Programmed I/O

c)

Interrupt-Driven I/O

d)

Data Buffering

15.

Data that has been processed into useful form called information

a)

Input

b)

Output

c)

ALU

d)

CPU

16.

CPU carries out a cycle called___. 

a)

Execute-decote-fetch

b)

Fetch-decode-execute

c)

Fetch-execute-decode

d)

Decode-execute-fetch

17.
A CPU can contain one or more processing units. Each unit is called a ___.This is one of the  key factors about CPU architecture that affect its performance.
a)
Core
b)
Intel
c)
AMD
d)
Megabite
18.

This term refers to the number of F-D-E cycles PER SECOND carried out by the CPU

a)

Cache size

b)

Core

c)

Intel

d)

Clock Speed

19.

Which of the following doesn’t affect the performance of the computer

a)
Number of Cores
b)
Clock Speed
c)
Cache Size
d)
The number of instructions in the program
20.
What is the job of the control unit?
a)
It carries out calculations
b)
It stores information.
c)
It does nothing.
d)
It controls the input and output of data to make sure that it gets to the right place.
21.

Which is NOT a major part of a CPU?

a)

Control unit

b)

ALU

c)

ROM

d)

Register set

22.

An I/O module has TWO major functions:

a)

Interface to the processor and memory via the system bus.

b)

Interface to one or more peripheral devices by tailored data links.

c)

Used to perform arithmetic and logic operation

d)

Performs most of the processing inside a computer

23.

An I/O module has TWO major functions:

a)

Interface to the processor and memory via the system bus.

b)

Interface to one or more peripheral devices by tailored data links.

c)

Used to perform arithmetic and logic operation

d)

Performs most of the processing inside a computer

24.

An operation by which the data that have been processed is prompt out to user via output devices

a)

Input device

b)

Input operation

c)

Output device

d)

Output operation

25.

Select THREE categories external devices

a)

Human readable

b)

Machine readable

c)

Communication

d)

Random Access Memory

26.

THREE interface in block diagram of an External Device

a)

Control Signal

b)

Control Logic

c)

Buffer

d)

Transducer

27.

All are the function I/O module except:

a)

Control & Timing

b)

CPU Communication

c)

Error detection

d)

Direct Memory Access (DMA)

28.

Select THREE I/O techniques

a)

Direct memory access

b)

Programmed I/O

c)

Interrupt-Driven I/O

d)

Data Buffering

29.

Any data or instructions you enter into the memory of a computer

a)

Input

b)

Output

c)

ALU

d)

CPU

30.

Why peripherals are not connected to the system bus directly?

a)

Peripherals use different data formats and data lengths

b)

Data transfer rate in devices are much slower

c)

Peripherals have different ways of operations

d)

All of the above

31.

______ is the interface to one or more peripheral devices by tailored data links.

a)

Processor

b)

Memory module

c)

I/O module

d)

System bus

32.

Paper jam reported by the printer is handled by which function of the I/O module?

a)

Device communication

b)

Error detection

c)

Control and timing

d)

Processor communication

33.

Primary storage is known as main storage or memory

a)

TRUE

b)

FALSE

34.

Magnetic tape is an example of direct access devices

a)

TRUE

b)

FALSE

35.

ROM is a primary storage device

a)

TRUE

b)

FALSE

36.

All secondary storage devices are external to the computer .

a)

TRUE

b)

FALSE

37.

If you use an online storage and your internet goes down, the data will be permanently lost

a)

TRUE

b)

FALSE

38.

A hard disk drive is a type of primary storage

a)

TRUE

b)

FALSE

39.

The data is NOT lost when you turn off the computer means the storage is

a)

VOLATILE

b)

NON-VOLATILE

40.

we need a secondary storage device in computer to store files for a long period of time and for future use.

a)

FALSE

b)

TRUE

41.

A Flash drive is an example of magnetic storage

a)

FALSE

b)

TRUE

42.

Secondary Storage devices are ONLY found inside a computer

a)

TRUE

b)

FALSE

43.

What is the key difference between primary and secondary memory?

a)

colour of device

b)

speed of access

c)

the capacity of memory

44.

Why the speed of reading and writing in secondary memory is much slower?

a)

Secondary memory is located close to the CPU on the computer motherboard.

b)

Secondary memory is located close to the adapter card slot on the computer motherboard.

c)

Secondary memory is usually physically located within a separate storage device.

45.

What are the examples of primary memory?

a)

RAM

b)

ROM

c)

HDD

d)

SSD

46.

What are the examples of secondary memory?

a)

RAM

b)

ROM

c)

HDD

d)

SSD

47.

Which one does provide temporary application data storage?

a)

RAM

b)

ROM

c)

HDD

48.

A typical computer system is equipped with a hierarchy of memory subsystems, some internal to the system and some external.

a)

True

b)

False

49.

__________ refers to whether memory is internal or external to the computer.

a)

Hierarchy

b)

Tag

c)

Location

d)

Access

50.

Internal memory capacity is typically expressed in terms of _________

a)

hertz

b)

nanos

c)

bytes

d)

LOR

51.

The L1 cache is faster than the L2 cache

a)

True

b)

False

52.

__________ is the time from the instant that an address is presented to the memory to the instant that data have been stored or made available for use.

a)

memory cycle time

b)

direct access

c)

transfer rate

d)

access time

53.

The __________ holds the address of a memory location and the _________holds the data value in that memory location.

 

a)

MDR, MAR

b)

MAR, MDR

c)

MDR, data bus

d)

MAR, address bus

54.

Which of the following has the capability to store the information permanently?

 

a)

ROM

b)

RAM

c)

DRAM

d)

Both RAM and ROM

55.

Computer operation in which new word replaced the old one in a particular memory location is termed as ­­­­­­­­­­___________________________.

 

a)

load Operation.

b)

store Operation.

c)

read operation.

d)

write operation.

56.

To determine which instruction to be executed, the control unit will read the contents of __________.

a)

Program counter

b)

Accumulator

c)

Memory address register

d)

Memory buffer register

57.

In nonvolatile archival storage, information remains when the power is turned off.

a)

True

b)

False

58.

Select the correct hierarchy for the memory in term of read / write operation (speed: slowest to fastest).

A.

B.

C. D.

a)

Secondary memory, primary memory, register, solid state drive (SSD)

b)

Register, cache, read only memory (ROM), random access memory (RAM)

c)

Solid state drive (SSD), random access memory (RAM), cache, register

d)

Primary memory, solid state drive (SSD), cache, register

59.

There are two types of Memory which are Non-volatile memory and Secondary Memory.

a)

True

b)

False

60.

What is (are) the purpose of Status Register?

i- Allow computers to keep track of special condition of arithmetic carry and overflow

ii- Allow computers to keep track of special condition of Internal computer error

iii- Allow computers to keep track of special condition of power failure

a)

i and ii

b)

i and iii

c)

ii and iii

d)

all of the above

61.

The primary memory (also called main memory) of a personal computer consists of

a)

RAM only

b)

ROM only

c)

Both RAM and ROM

d)

Cache Memory

62.

USB-type storage device is -

a)

Secondary

b)

Auxillary

c)

Tertiary

d)

Primary

63.

What is the full form of ROM?

a)

Read-Only Memory

b)

Random Only Memory

c)

Register Only Memory

d)

Readable Only Memory

64.

Which of the following memory is non-volatile?

a)

RAm

b)

ROM

c)

Cache

d)

ROM and Cache

65.

Which of the following is the lowest in the computer memory hierarchy?

a)

Cache

b)

RAM

c)

Secondary memory

d)

CPU registers

66.

Which memory acts as a buffer between CPU and main memory?

a)

RAM

b)

ROM

c)

Cache

d)

Storage

67.

It stores both data and instructions.

a)

CPU

b)

Main Memory

c)

Input devices

d)

Output devices

e)

Bus

68.

The RAM loses content when the power is lost. True or false?

a)

True

b)

False

69.

Which memory has very least access time due to which it is the most fastest memory?

a)

Registers

b)

Cache

c)

RAM

d)

Flash Drives

70.

Which memory is most expensive ?

a)

Registers

b)

Cache

c)

RAM

d)

Flash Drives

71.

Which memory has the smallest storage capacity?

a)

Registers

b)

Cache

c)

Hard Disk

d)

SSD

72.

Which two memories are closely attached with CPU?

a)

Registers and Cache

b)

Hard Disk and Floppy Disk

c)

USB and Memory Card

d)

RAM and ROM

73.

What does the acronym CPU stand for?

a)
Control Processing Unit
b)
Central Processing Unit
c)
Central Power Unit
d)
Center Power Unit
74.

What is the purpose of the CPU?

a)

To process all the data and instructions.

b)

To turn the computer on.

c)

To create PowerPoint presentations.

d)

To provide power to the computer.

75.

CPU carries out a cycle called___. 

a)

Execute-decote-fetch

b)

Fetch-decode-execute

c)

Fetch-execute-decode

d)

Decode-execute-fetch

76.
A CPU can contain one or more processing units. Each unit is called a ___.This is one of the  key factors about CPU architecture that affect its performance.
a)
Core
b)
Intel
c)
AMD
d)
Megabite
77.

This term refers to the number of F-D-E cycles PER SECOND carried out by the CPU

a)

Cache size

b)

Core

c)

Intel

d)

Clock Speed

78.

Describe the purpose of the ALU within the CPU

a)

Carrying out arithmetic i.e. calculations and logic comparisons i.e. is one number larger than another

b)

Controls the flow of data around a computer. Fetches and decodes using system buses

c)

Stores frequently accessed data

d)

Stores programs, data and instructions currently in use

79.
___ are circuits on the motherboard that connect the CPU to other components. There are many ____ on the motherboard. 
a)
Cores
b)
Buses
c)
Hard drives
d)
Clocks
80.
A clock speed of 500Hz means...
a)
500 cycles per second
b)
5000 cycles per minute
c)
5 cycles per hour
d)
50 cycles per minute
81.

Describe the purpose of the Control Unit within the CPU

a)

Fetches the data/instructions, decodes it and sends the signals via buses to the hardware components.

b)

Carries out calculations and comparisons, to see if one value is larger than another.

82.

Processors have a speed measured in

a)

Bits

b)

Seconds

c)

Bytes

d)

Hertz

83.

Data and Instructions in use are stored in the:

a)
Hard Disk Drive
b)
Processor
c)
Main Memory
d)
Embedded System
84.

Which of the following doesn’t affect the performance of the computer

a)
Number of Cores
b)
Clock Speed
c)
Cache Size
d)
The number of instructions in the program
85.
What is the job of the control unit?
a)
It carries out calculations
b)
It stores information.
c)
It does nothing.
d)
It controls the input and output of data to make sure that it gets to the right place.
86.
What is a bus?
a)
A circuit that connect one part of CPU to other components.
b)
A type of long term memory
c)
A type of permanent memory
d)
A method of transport
87.

Performs calculations (i.e. addition, division, multiplication, subtraction)

a)

MAR (Memory Address Register)

b)

MDR (Memory Data Register)

c)

CIR (Current Instruction Register)

d)

PC (Program Counter)

e)

ALU (Arithmetic and Logic Unit)

88.
Which two main components make up a CPU
a)
Control unit and Processing unit
b)
Control unit and RAM
c)
Control unit and Arithmetic Logic unit 
d)
Flash storage and Arithmetic Logic unit 
89.

Which is NOT a major part of a CPU?

a)

Control unit

b)

ALU

c)

ROM

d)

Register set

90.

Which of the following is the last step of an instruction cycle?

a)

fetch

b)

decode

c)

execute

d)

configure

91.

What is the basic operation performed by a central processing unit?

a)

computer cycle

b)

machine cycle

c)

motherboard cycle

92.
1.1 b 
Which register is being described?
Stores the results of the calculations done by the ALU
a)
MAR
b)
MDR
c)
Accumulator
d)
Program Counter
93.
1.1 b 
Which register is being described?
Holds the memory address about to be used by the CPU
a)
MAR
b)
MDR
c)
Accumulator
d)
Program Counter
94.
1.1 b 
Which register is being described?
Holds the data / instructions that have been fetched from memory
a)
MAR
b)
MDR
c)
Accumulator
d)
Program Counter
95.
1.1 b 
Which register is being described?
Holds the memory address of the instruction for each cycle
a)
MAR
b)
MDR
c)
Accumulator
d)
Program Counter
96.
What are registers used for?
a)
To check that students are in school.
b)
To temporarily hold bits of data needed by the CPU.
c)
To make sure that the CPU runs properly.
d)
To make the CPU faster.
97.
What is a bus?
a)
A circuit that connect one part of CPU to other components.
b)
A type of long term memory
c)
A type of permanent memory
d)
A method of transport
98.

Describe the tasks that the control unit carries out

a)

Fetches the data/instructions, decodes it and sends the signals via buses to the hardware components.

b)

Carries out calculations and comparisons, to see if one value is larger than another.

99.
Which of the following is an example of 'main memory'.
a)
Hard Drive
b)
USB Drive
c)
RAM
d)
ROM
100.

When storing a signed integer in a single word, which one is the sign bit?

a)

The least significant bit

b)

The most significant bit

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