#### 11th Standard Computer Science English Medium Free Online Test One Mark Questions with Answer Key 2020 - Part Three

11th Standard

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Computer Science

Time : 00:10:00 Hrs
Total Marks : 10

10 x 1 = 10
1. Which one of the following is the main memory?

(a)

ROM

(b)

RAM

(c)

Flash drive

(d)

Hard disk

2. Expansion for BCD_________

(a)

Binary coded-decimal

(b)

binary complement decimal

(c)

binary computer decimal

(d)

binary convert decimal

3. Find the wrong pair from the following.

(a)

Null element : A + 1 = 1

(b)

Involution      : $\overset { = }{ A } =A$

(c)

Demorgan's  : $\bar { A+B } =\bar { A } .\bar { B }$

(d)

Commutative : A + B = B . A

4. Which of the following is not an example of CISC processor?

(a)

Pentium IV

(b)

Pentium I

(c)

Pentium II

(d)

Pentium III

5. The color of Single-layered DVD is.......

(a)

Gold

(b)

BIue

(c)

White

(d)

Silver

6. ___________is commonly used to measure wave frequencies.

(a)

Hertz

(b)

internal memory

(c)

RAM

(d)

ALU

7. Which is used to perform any computer operation?

(a)

Application software

(b)

Hardware

(c)

Operating system

(d)

File Management

8. Multiprocessor operating system is also called _____processing.

(a)

Multiuser

(b)

Real time

(c)

Parallel

(d)

Time sharing

9. Which operating system provides GUI?

(a)

Distributed

(b)

Real time

(c)

Interactive

(d)

Multi-User

10. The process of converting cipher text to plain text is called

(a)

Encryption

(b)

Decryption

(c)

key

(d)

proxy server