NIC-NIELIT Scientist-B 2020
October 5, 2023UGC NET CS 2018-DEC Paper-2
October 5, 2023Computer-Networks
| Question 763 |
In classless addressing, there are no classes but addresses are still granted in:
| Codes | |
| Blocks | |
| IPs | |
| Sizes |
Question 763 Explanation:
→ When we have run out of class A and B addresses, and a class C block is too small for most midsize organizations.
→ To overcome the problem of address depletion and give more organizations access to internet, classless addressing was designed and implemented.
→ The size of the block (the number of addresses) varies based on the nature and size of the entry. For example, a household may be given only two addresses; a large organization may be given thousands of addresses. An ISP, may be given thousands or hundreds of thousands based on the number of customer it may serve.
→ To simplify the handling of addresses, the Internet authorities impose three restrictions on classless address blocks:
1. The addresses in a block must be contiguous, one after the other.
2. The number of addresses in a block must be a power of 2 (1, 2, 4,8, …. ).
3. The first address must be evenly divisible by the number of address.
→ To overcome the problem of address depletion and give more organizations access to internet, classless addressing was designed and implemented.
→ The size of the block (the number of addresses) varies based on the nature and size of the entry. For example, a household may be given only two addresses; a large organization may be given thousands of addresses. An ISP, may be given thousands or hundreds of thousands based on the number of customer it may serve.
→ To simplify the handling of addresses, the Internet authorities impose three restrictions on classless address blocks:
1. The addresses in a block must be contiguous, one after the other.
2. The number of addresses in a block must be a power of 2 (1, 2, 4,8, …. ).
3. The first address must be evenly divisible by the number of address.
Correct Answer: B
Question 763 Explanation:
→ When we have run out of class A and B addresses, and a class C block is too small for most midsize organizations.
→ To overcome the problem of address depletion and give more organizations access to internet, classless addressing was designed and implemented.
→ The size of the block (the number of addresses) varies based on the nature and size of the entry. For example, a household may be given only two addresses; a large organization may be given thousands of addresses. An ISP, may be given thousands or hundreds of thousands based on the number of customer it may serve.
→ To simplify the handling of addresses, the Internet authorities impose three restrictions on classless address blocks:
1. The addresses in a block must be contiguous, one after the other.
2. The number of addresses in a block must be a power of 2 (1, 2, 4,8, …. ).
3. The first address must be evenly divisible by the number of address.
→ To overcome the problem of address depletion and give more organizations access to internet, classless addressing was designed and implemented.
→ The size of the block (the number of addresses) varies based on the nature and size of the entry. For example, a household may be given only two addresses; a large organization may be given thousands of addresses. An ISP, may be given thousands or hundreds of thousands based on the number of customer it may serve.
→ To simplify the handling of addresses, the Internet authorities impose three restrictions on classless address blocks:
1. The addresses in a block must be contiguous, one after the other.
2. The number of addresses in a block must be a power of 2 (1, 2, 4,8, …. ).
3. The first address must be evenly divisible by the number of address.
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