Question

For the Address Block 195.200.0.0/16 a. If you have 320 Customers that need 128 addresses/customer - will there be enough addresses to satisfy them? and explain why? b. Say the first block of 64 customers want 128 addresses/customer - what would the address space look like?

Answer 1

Answer / Explanation:

195.200.0.0/16

Note: Class C address can not be assigned a subnet mask of /16 because class c address has 24 bits assigned for network part.

2ⁿ = number of subnets

where n is additional bits borrowed from the host portion.

2ˣ - 2 = number of hosts

where x represent bits for the host portion.

Assuming we have 195.200.0.0/25

In the last octet, we have one bit for the network

number of subnets  = 2¹  =2 network addresses  

number of host = 2⁷ - 2= 126 network addresses per subnets