EE5412 subnet example

EE5412 Telecommunications Network

A company has three offices: Central, East, and West.

The Central office is connected to the East and West offices via private, point-to-point WAN lines. The company is granted a block of 64 addresses with the beginning address 70.12.100.128/26.

The management has decided to allocate 32 addresses for the Central office and divides the rest of addresses between the two offices.
Suggest a network configuration. Provide your answer with a network diagram.
On your diagram, indicate the Subnet address, subnet mask and the IP address on each router link.

Ans:
Address block 70.12.100.128/26 …[64 IP address]

sub-divided into 70.12.100.128/27 --- [32 IP address] [27 bits subnet mask]
70.12.100.160/28 --- [16 IP address]
70.12.100.176/28 --- [16 IP address]