Networking Questions and Answers – Classful Addressing

This set of Network Security Multiple Choice Questions & Answers (MCQs) focuses on “Classful Addressing”.

1. Each block in class A contains _____________ addresses.
a) 2¹⁶
b) 2²⁴
c) 2⁸
d) 2¹⁴
View Answer

2. Each block in class B contains __________ addresses.
a) 2⁸
b) 2²⁴
c) 2¹⁴
d) 2¹⁶
View Answer

3. Number of Blocks in class B are –
a) 2¹²
b) 2¹⁶
c) 2¹⁴
d) 2¹⁸
View Answer

3. Number of Blocks in class C are –
a) 2¹²
b) 2¹⁶
c) 2¹⁴
d) 2¹⁸
View Answer

4. Percent of addresses occupied by Class D?
a) 50 %
b) 25 %
c) 6.25 %
d) 12.5 %
View Answer

5. Which of the following does not have a Net ID and Host ID?
a) Class A
b) Class B
c) Class C
d) Class D
View Answer

6. Which Class is reserved for future use?
a) A
b) B
c) D
d) None of the Mentioned
View Answer

7. Number of Blocks in class C are –
a) 2⁷
b) 2⁸
c) 2¹⁴
d) 2⁹
View Answer

8. What is the size of the Host ID in Class C?
a) 24 bits
b) 16 bits
c) 8 bits
d) 14 bits
View Answer

An address in a block is given as 180.8.17.9. Find the number of addresses in the block, the first address, and the last address.

9. Address of the block is –
a) 2¹⁴
b) 2¹⁶
c) 2⁸
d) 2²⁴
View Answer

10. First Address is –
a) 180.8.0.0
b) 180.7.64.0
c) 180.8.1.256
d) 180.12.0.0
View Answer

11. Last Address is –
a) 180.8.255.255.
b) 180.8.255.0.
c) 180.12.0.255.
d) 180.9.255.255.
View Answer

12. A router receives a packet with the destination address 132.7.21.84. Find the network address of the packet.
a) 1.32.7
b) 132.7
c) 13.27
d) 21.84
View Answer

Sanfoundry Global Education & Learning Series – Cryptography and Network Security.

To practice all areas of Cryptography and Network Security, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]