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Class 11 CSO, DR & BL

Total questions: 115

Worksheet time: 1hrs 11mins

Name
Class
Date
1.

A computer is an ______________ device.

a)

a. Electronic

b)

b. Electrical

c)

c. Mechanical

d)

d. None of the above

2.

CPU stands for ___________________

a)

b. Central Processing Unit

b)

a. Central Processor Unit

c)

d. None of the above

d)

c. Control Processing Unit

3.

CPU is called _____________ of computer.

a)

b. Brain

b)

a. Heart

c)

d. None of the above

d)

c. Eyes

4.

CPU can be placed on one or more microchips called IC. Here IC stands for ___________

a)

d. None of the above

b)

b. Internal Circuit

c)

c. Interesting Circuit

d)

a. Integrated Circuit

5.

ALU stands for __________

a)

d. None of the above

b)

c. Arithmetic Logic gates Unit

c)

b. Arithmetic Logic Universe

d)

a. Arithmetic Logic Unit

6.

Devices which feed data into the computer are called ___________

a)

c. Input devices

b)

a. Output devices

c)

b. Storage devices

d)

d. None of the above

7.

Example of input device is :

a)

a. Keyboard

b)

c. Microphone

c)

d. All of the above

d)

b. Scanner

8.

Data entered through input device is temporarily stored in ____

a)

a. RAM

b)

b. ROM

c)

c. Hard disk

d)

d. All of the above

9.

Which of the following is a type of printer?

a)

a. ink jet

b)

b. laser jet

c)

c. Dot Matrix

d)

d. All of the above

10.

What does RAM stand for?

a)

a. Random Access Memory

b)

b. Read Access Memory

c)

c. Rapid Access Memory

d)

d. None of the above

11.

Which of the following is a storage device?

a)

a. USB Flash Drive

b)

b. Mouse

c)

c. Monitor

d)

d. Keyboard

12.

What is the function of an operating system in a computer?

a)

a. Manage hardware resources

b)

b. Run applications

c)

c. Both a and b

d)

d. None of the above

13.

Which component of a computer is responsible for storing data permanently?

a)

a. RAM

b)

b. CPU

c)

c. Hard disk

d)

d. Cache memory

14.

What is the role of a motherboard in a computer system?

a)

a. Connect all components

b)

b. Process data

c)

c. Display output

d)

d. None of the above

15.

What does BIOS stand for in a computer system?

a)

a. Basic Input Output System

b)

b. Binary Input Output System

c)

c. Basic Integrated Operating System

d)

d. None of the above

16.
What should label A say?
a)
Input
b)
Output
c)
Processing
d)
Storage
17.
What should label B say?
a)
Input
b)
Output
c)
Processing
d)
Storage
18.
What should label C say?
a)
Input
b)
Output
c)
Processing
d)
Storage
19.
What should label D say?
a)
Input
b)
Output
c)
Processing
d)
Storage
20.
Which of these is an Input device
a)
Temperature Sensor
b)
Servo Motor
c)
SD card
d)
Monitor
21.
Which of these are Secondary Storage
a)
ROM
b)
RAM
c)
Hard Disk
d)
CPU
22.
The steps when the CPU executes instructions is
a)
Get, Look at, Do
b)
Fetch, Decide, Execute
c)
Fetch, Decode, Execute
d)
Find, Decode, Execute
23.
The part of the CPU which holds the location of the next bit of memory to read from / written to
a)
Address Bus
b)
Random Access Memory
c)
Memory Data Register
d)
Memory Address Register
24.
Which of these storage devices are volatile
a)
RAM
b)
Flash Memory
c)
CD-RW
d)
SSD
25.
An area on the CPU which speeds up processing by storing copies of blocks of data
a)
Cheating
b)
ROM
c)
Cache
d)
Memory Address Register
26.

To increase the speed of memory access in pipelining, we make use of _______

a)

Special memory locations

b)

Special purpose registers

c)

Cache

d)

Buffers

27.

The type of control signal is generated based on ________

a)

contents of the step counter

b)

Contents of IR

c)

Contents of condition flags

d)

All of the mentioned

28.

What kind of laser does Blu-ray disc use?

a)

Blue-red laser

b)

Blue-green laser

c)

Blue-violet laser

d)

Purple-green laser

29.

A compiler converts

a)

High level language to machine language

b)

source code to object code

c)

Both 1) and 2)

30.

Which of the following is true about primary

storage

a)

it is a part of the CPU

b)

It allows very fast access to data

c)

It is relatively more expensive

d)

all of the above

31.

The process of copying data from a memory

location is called

a)

booting

b)

reading

c)

writing

d)

controlling

32.

the brains of the computer where most calculations take place.

a)

Algorithm

b)

Program

c)

CPU

d)

Hardware

33.

Hardware attached to the computer

a)

Input Device

b)

Peripheral

c)

Output Device

d)

Software

34.

Holds information for us to use later:

a)

Software

b)

Hardware

c)

Peripheral

d)

Storage Device

35.

Which of these is NOT an example of a peripheral?

a)

Mouse

b)

Monitor

c)

Microsoft Word

d)

Keyboard

36.

Main chip in the computer:

a)

Motherboard

b)

RAM

c)

ROM

d)

CPU

37.

What is a flash drive an example of?

a)

Software

b)

Storage Device

c)

Hardware

d)

Input Device

38.
What does USB stand for?
a)
Universal Serial Bus
b)
Universal Simplex Bandwidth 
c)
Universal Serial Broadband
d)
Universal Simplex Bus
39.
Which of these is not a network protocol?
a)
HTTP
b)
POP3
c)
Ethernet
d)
HDMI
40.

EEPROM means (a)   .

41.

Holds information for us to use later:

a)

Software

b)

Hardware

c)

Peripheral

d)

Storage Device

42.
A processor is sometimes called the  _______ of the computer
a)
Lungs
b)
Heart
c)
Brains
d)
Eyes
43.

The three main types of computer parts are

a)

processing devices

b)

input/output devices

c)

data storage devices

d)

display devices

44.

The ALU works on the instructions and data held in the _______________

a)

Notebook

b)

Registers

c)

Copy Pad

d)

I/O devices

45.

A register that keeps track of the next instruction to be executed is called a _____________

a)

Program Counter

b)

Instruction Register

c)

Accumulator

d)

Data Register

46.

_______________ is a large multilayered printed circuit board inside a computer that contains CPU,BIOS,ROM chip and the CMOS setup information.

a)

Motherboard

b)

RAM

c)

ROM

d)

Cache

47.

The ___________ informs the CPU about the location of the data residing in the memory.

a)

Data bus

b)

Address bus

c)

Cache

d)

Control line

48.

A computer system is the integration of

a)

Hardware

b)

Software

c)

Both a and b

d)

Either a and b

49.

Software are called as _____

a)

Physical entities

b)

Non physical entities

c)

Set of program

d)

None of the above

50.

Physical entities of the computer is called as ______

a)

Hardware

b)

Software

c)

Input Unit

d)

Program

51.

Based on the functionalities, computer hardware are classified into ______ categories.

a)

3

b)

4

c)

5

d)

6

52.

What is used provide data and program?

a)

Keyboard

b)

Mouse

c)

Output Unit

d)

Input Unit

53.

Which is not an input unit?

a)

Keyboard

b)

Mouse

c)

Monitor

d)

Scanner

54.

Which is used to provide result of processing?

a)

Moitor

b)

Keyboard

c)

Input Unit

d)

Output Unit

55.

Find the odd one?

a)

Keyboard

b)

Monitor

c)

Speaker

d)

Printer

56.

_______ store data and program temporarily.

a)

Hard disk

b)

Pen drive

c)

Memory Unit

d)

CD Rom

57.

Identify the function of CPU?

a)

Perform computation

b)

Decision making

c)

Control different devices

d)

All the above

58.

CPU consists of ______?

a)

ALU

b)

CU

c)

Internal memory

d)

All the above

59.

______ is the computer calculator.

a)

ALU

b)

CU

c)

Internal Memory

d)

CPU

60.

_____ directs and controls the activities of the

computer system.

a)

ALU

b)

CU

c)

Register

d)

CPU

61.

Which of the following busses is omnidirectional?

a)

The control bus

b)

The R42 to manchester

c)

The address bus

d)

The data bus

62.

Holds the memory address of the next instruction to be executed:

a)

CIR (current instruction register)

b)

MAR (memory address register)

c)

SR (status register)

d)

PC (program counter)

63.

Holds the address in memory where the processor is required to fetch or store data from or to:

a)

Memory Buffer Register (MBR)

b)

Program counter (PC)

c)

Status register (SR)

d)

Memory Address Register (MAR)

64.
Which of these modes best describes a computer system?
a)
Input-output-process
b)
Process-input-output
c)
Input-process-output
65.

The fetch and execution cycles are interleaved with the help of ________

a)

Modification in processor architecture

b)

Clock

c)

Special unit

d)

Control unit

66.
In computing, a bit is
a)
8 bytes
b)
a single    0 or 1     on or off
67.
A byte is
a)
8 bits
b)
4 bits
68.
The following is a correct order of units of storage from lowest to highest:
a)
a bit, a nibble, a byte, a kilobyte, a megabyte, a gigabyte, a terabyte
b)
a bit, a byte, a nibble, a kilobyte, a megabyte, a gigabyte, a terabyte
c)
a bit, a nibble, a byte, a megabyte, a kilobyte, a gigabyte, a terabyte
d)
a byte, a bit, a nibble, a megabyte, a kilobyte, a gigabyte, a terabyte
69.

Which of the following represents the binary number 1101 in decimal form (base 10)?

a)

11

b)

8

c)

9

d)

13

70.

Which of the following represents the decimal number 10 in binary form (base 2)?

a)

0110

b)

1010

c)

1000

d)

1001

71.

Which of the following represents the decimal number 29 in hexadecimal form (base 16)?

a)

1D

b)

AA

c)

29

d)

2C

72.

Which of the following represents the decimal number 45 in hexadecimal form (base 16)?

a)

ABC

b)

2D

c)

22

d)

45

73.

Which of the following represents the binary number 1110 1110 in hexadecimal form (base 16)?

a)

1414

b)

223

c)

1E

d)

EE

74.

Which of the following represents the hexadecimal number C in binary form (base 2)?

a)

1001

b)

1100

c)

1111

d)

1000

75.

Which of the following represents the hexadecimal number AF1 in binary form (base 2)?

a)

1010 1001 0001

b)

1110 1111 0011

c)

1010 1111 0000

d)

1010 1111 0001

76.

Name the law which states X+Y = Y+X

a)

Associative Law

b)

Indempotence Law

c)

Commutative Law

d)

Involution Law

77.

Name the law which states that X(Y+Z)=XY+XZ

a)

Commutative Law

b)

Associative Law

c)

Distributive Law

d)

Absorption Law

78.

Statement of Involution Law

a)
b)
c)
d)
79.

Statement of Properties of 1

a)
b)
c)
d)
80.

Name the gate

a)

XOR

b)

OR

c)

NOT

d)

XNOR

81.

Which is the symbol of NAND gate?

a)
b)
c)
d)
82.

In Hexadecimal number system, D represents ______

a)

13

b)

11

c)

14

d)

12

83.

Which gates are called Universal gates?

a)

OR, AND

b)

NAND, NOR

c)

NOT

d)

XOR, XNOR

84.

Name the gate which produces output 1 when the input have odd number of 1's

a)

XNOR

b)

XOR

c)

OR

d)

NAND

85.

When the result of any logical statement or expression is always TRUE or 1, it is called _________

a)

Boolean False

b)

Fallacy

c)

Boolean True

d)

Tautology

86.

__________ and __________ are called truth values

(a)  

87.

(a)   operator operates on a single variable

88.

Name the procedure "Break the line, change the sign"

a)

Demorgan's law

b)

Duality principle

c)

Demorganization

d)

Fallact

89.

(a)   is called inverted AND gate

90.

(a)   is called inverted OR gate

91.

Which of the following are boolean constants ?

a)

Yes

b)

NO

c)

1

d)

ALL OF THESE

92.

Which of the following are boolean constants ?

a)

Yes

b)

NO

c)

1

d)

ALL OF THESE

93.

Which of the following are boolean operators ? ( SELECT MULTIPLE ANSWERS)

a)

AND

b)

YES

c)

NIL

d)

OR

94.

What is the dual of the operation A.B+A.C ?

a)

A.C+A.B

b)

2A.B + 2A.C

c)

A+B.A+C

d)

None of the above

95.

Which of the following represents Absorption Law

a)

A+AB=A

b)

A.(A+B)

c)

Both (a) and (b)

d)

Neither (a) nor (b)

96.

Which of the following is/are also known as universal gates (SELECT MULTIPLE ANSWERS)

a)

XOR

b)

NAND

c)

NOR

d)

AND

97.

Which operator has the lowest priority?

a)

AND

b)

NOT

c)

NOR

d)

OR

98.

If the result of a logical expression or logical statement is always true or 1

a)

TAUTOLOGY

b)

FALLACY

c)

TRUE

d)

LOGIC GATE

99.

This is the truth table for which logic gate?

a)
b)
c)
100.

In this logic circuit, if A = 0 and Q = 1, what is B?

a)

0

b)

We can't say

c)

1

101.

A NOT takes a single Boolean value, either true or false, and ______

a)

makes it true

b)

makes it false

c)

negates it

d)

keeps it the same

102.

Using an OR gate, it one transistor is on and the other is off, the output is ________

a)

off

b)

on

c)

indeterminate

d)

negated

103.

Which logic gate is commonly represented by a "triangle with a dot"?

a)

NOT

b)

AND

c)

OR

d)

XOR

104.

Which logic gate is commonly represented by a "spaceship" symbol?

a)

NOT

b)

AND

c)

OR

d)

XOR

105.

The only time an XOR is true is when _______

a)

both inputs are false

b)

both inputs are true

c)

one input is true and the other input is false

d)

the output is grounded

106.

Which logic gate is commonly represented by a "spaceship with a smile"?

a)

NOT

b)

AND

c)

OR

d)

XOR

107.

When we use symbols for logic gates, rather than transistors, we are moving up _____

a)

a row on a logic table

b)

a layer of abstraction

c)

the ladder of complexity

d)

the trophic pyramid

108.
____________ bits equal one byte.
a)
Eight
b)
Two
c)
One thousand
d)
One million
109.
Convert binary 111111110010 to hexadecimal
a)
EE216
b)
FF216
c)
2FE16
d)
FD216
110.
Convert 010112 to decimal
a)
11
b)
35
c)
15
d)
10
111.
Convert 11001010001101012 to hexadecimal.
a)
121035
b)
CA35
c)
53AC1
d)
530121
112.
Convert hexadecimal C0B to binary.
a)
110000001011
b)
110000001001
c)
110000001100
d)
110100001011
113.
The term gigabyte refers to
a)
1024 bytes
b)
1024 kilobytes
c)
1024 megabytes
d)
1024 gigabytes
114.

TO CONVERT DECIMAL TO OCTAL NUMBER WE HAVE TO

a)

SUBTRACT BY 8

b)

MULTIPLY BY 8^0

c)

DIVIDE BY 8

115.

convert binary number 110102 to hexadecimal number

a)

B116

b)

D016

c)

1A16

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