Question

An Internet Service Provider (ISP) has the following block of IP address192.37.128.0/17. The ISP gave the...

An Internet Service Provider (ISP) has the following block of IP address192.37.128.0/17. The ISP gave the first 1024 addresses to Organization A and the next available subblock of 16384 addresses to Organization B and retained the remaining IP addresses. Give the subblocks and the valid range of addresses allocated to organizations A & B and the range of remaining addresses.

Homework Answers

Answer #1

/17 => number of network bits in the network is 17

For the organization A and B, the subnet mask will be /18 , that is 18th subnet bit as subnet bits.

192.37.128.0

=> 11000000 00100101 10000000 00000000

For Organization A,

Subnet Address or sub block address

11000000 00100101 10000000 0000000

192.37.128.0

Range of address is :

11000000 00100101 10000000 00000001 to

11000000 00100101 10111111 11111110

192.37.128.1 to 192.37.191.254

For organization B,

Sub block address,

11000000 00100101 11000000 00000000

=> 192.37.192.0

Range of address :

11000000 00100101 11000000 000000001 to

11000000 00100101 11111111 11111110

192.37.192.1 to 192.37.255.254

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