Question Bank - Computer Networks

Here's the question bank on all the computer networks topics.

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You are working with a network that is 172.16.0.0 and would like to support 600 hosts per subnet. What subnet mask should you use?

A.
255.255.192.0
B.
255.255.224.0
C.
255.255.252.0
D.
None of the options

Solution:

Concept:In class B, the first two octets(16 bits) represent network address and out of these 16 bits first two bits are fixed(10) to specify that its class B and the remaining 14 bits represent 214 networks, and each network has 216 - 2 host.Explanation:IPv4 address: 32 bitsNetwork Id = 16 bitsSince there are 600 Host ID? Host ID = ?log2 600?= 10IP address = Network ID + Subnet ID + Host ID32 = 16 + Subnet ID + 10? Subnet ID = 6In subnet mask, all host id bits are 0 and network id, subnet id are 1sNetwork ID + Subnet ID = 6 + 16 = 22 bitssubnet mask: 11111111. 11111111. 11111100.00000000subnet mask: 255. 255.252.0

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