#### 11th Standard Computer Science Number Systems English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

11th Standard

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Computer Science

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

20 x 1 = 20
1. Which refers to the number of bits processed by a computer's CPU?

(a)

Byte

(b)

Nibble

(c)

Word length

(d)

Bit

2. Expansion for ASCII

(a)

American School Code for Information Interchange

(b)

American Standard Code for Information Interchange

(c)

All Standard Code for Information Interchange

(d)

American Society Code for Information Interchange

3. What is the 1's complement of 00100110?

(a)

00100110

(b)

11011001

(c)

11010001

(d)

00101001

4. Which is a basic electronic circuit which operates on one or more signals?

(a)

Boolean algebra

(b)

Gate

(c)

Fundamental gates

(d)

Derived gates

5. A + A =?

(a)

A

(b)

O

(c)

I

(d)

A

6. How the information entered in a computer?

(a)

Knowledge

(b)

data

(c)

ASCII Value

(d)

BCD

7. "75% of Men likes cricket" is............

(a)

Information

(b)

data

(c)

knowledgeRecord

(d)

Record

8. In a computer, a data is converted into

(a)

ASCII form

(b)

BCD form

(c)

Binary form

(d)

Octal form

9. Which is used to measure the number of bits in each word?

(a)

Word length

(b)

length

(c)

Size

(d)

word size

10. Who coined the term byte?

(a)

Charles Babbage

(b)

John von newmann

(c)

Werner Buchholz

(d)

Herman Hollerith

11. A Latin prefix Deci means.........

(a)

2

(b)

8

(c)

16

(d)

10

12. The base value of a number is also known as.....

(a)

length

(b)

(c)

data

(d)

Position

13. Each binary digit weight is expressed as a power of.......

(a)

1

(b)

0

(c)

0,1

(d)

2

14. Expansion of LSB is

(a)

Least Significant Byte

(b)

Least Sign Bit

(c)

Least Significant Bit

(d)

Left Significant Bit

15. The left most bit on the binary digit carries the largest weight is called......

(a)

LSB

(b)

MSB

(c)

Word

(d)

Byte

16. How many unique symbols in Octal number system?

(a)

4

(b)

16

(c)

2

(d)

8

17. How many procedures are there to convert from decimal to binary?

(a)

2

(b)

4

(c)

8

(d)

3

18. In binary numbers, the signed positive number has a prefix?

(a)

+

(b)

0

(c)

1

(d)

-

19. The 4 bit binary equivalent of -5 is......

(a)

1101

(b)

0101

(c)

1100

(d)

-101

20. The most popular way of representing negative numbers in computer systems is.......

(a)

I's complement

(b)

Signed bit

(c)

2's complement

(d)

All of these