#### 11th Standard Computer Science Number Systems English Medium Free Online Test One Mark Questions 2020 - 2021

11th Standard

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Computer Science

Time : 00:20:00 Hrs
Total Marks : 20

20 x 1 = 20
1. How many bytes does 1 KiloByte contain?

(a)

1000

(b)

8

(c)

4

(d)

1024

2. For 11012 the equalent Hexadecimal equivalent is?

(a)

F

(b)

E

(c)

D

(d)

B

3. Which amongst this is not an Octal number?

(a)

645

(b)

234

(c)

876

(d)

123

4. Data means..............

(a)

a set of values

(b)

a set of information

(c)

a set of records

(d)

a set of files

5. How the message represented in computers?

(a)

Information

(b)

data

(c)

Knowledge

(d)

all of these

6. The most basic unit of information in a digital computer is called a

(a)

word

(b)

data

(c)

nibble

(d)

bit

7. Which establishment done convention using groups of 8 bits as a basic unit of storage medium?

(a)

Apple

(b)

Microsoft

(c)

IBM

(d)

DELL

8. A word can have a length of..........

(a)

2,5,10 bits

(b)

15,25,50 bits

(c)

16,32,64 bits

(d)

64,128,255 bits

9. The binary equivalent of a hexadecimal digit C is repressed by.....

(a)

1010

(b)

1011

(c)

1101

(d)

1100

10. The base value is also known as

(a)

Absolute

(b)

Place

(c)

(d)

System

11. Which is an elementary building block of the digital circuit?

(a)

Gate

(b)

Digital gate

(c)

Logic gate

(d)

Physical gate

12. Which one of the following are called universal gates?

(a)

AND, OR, NOT

(b)

XOR AND XNOR

(c)

NAND and NOR

(d)

NAND and AND

13. The______operator is defined in booolgan algebra by the use of the dot (.) operator.

(a)

AND

(b)

OR

(c)

NOT

(d)

NAND

14. ________ is the general idea behind positional numbering system

(a)

(b)

Computer memory

(c)

Binary number

(d)

Decimal number

15. The computer can understand ______ languages.

(a)

computer

(b)

machine

(c)

post

(d)

pre

16. The collection of 4 bits is _______

(a)

bit

(b)

byte

(c)

nibble

(d)

KB

17. 1 kilo byte represents _______ bytes.

(a)

512

(b)

256

(c)

1024

(d)

64

18. Unicode can handles how many characters?

(a)

64

(b)

128

(c)

256

(d)

65536

19. The base value of hexadecimal number is ________

(a)

2

(b)

8

(c)

16

(d)

18

20. How many truth values are there?

(a)

2

(b)

3

(c)

4

(d)

5