Computer Science - Networking - Discussion

Discussion Forum : Networking - Section 4 (Q.No. 33)
33.
You are working with a network that has the network ID 172.16.0.0, and you require 25 subnets for your company and an additional 30 for the company that will merge with you within a month. Each network will contain approximately 600 nodes. What subnet mask should you assign?
255.255.192.0
255.255.224.0
255.255.240.0
255,255.248.0
255.255.252.0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
5 comments Page 1 of 1.

Rakesh said:   7 years ago
E is the right answer.
IP belongs to Class B Default Subnet Mask is 255.255.0.0.
Total Subnet required =25+30 =55 2^6=64,
Mask is 1111 1111.1111 1111.1111 1100.0000 0000,
255.255.128+64+32+16+8+4.0.
255.255.252.0.

Safalya said:   9 years ago
Yes, The answer should be A.

Rohan said:   9 years ago
Answer should be option A) 255.255.192.0.

Shailesh Saxena said:   1 decade ago
IP belongs to class B so 255.255.0.0 mask and for that 16 bits.

Remaining bits are 16 out of 16, and now we want 600 host per subnet.

Total subnets = 25+30 = 55, 55<2^6(2^6 = 64 subnet).

So, mask becomes 1111 1111.1111 1111.1111 1100.0000 0000 for subnet.

134.57.252.0.

Anuja said:   1 decade ago
Please explain the methods to get the answer of this type of question.

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