Chapter 5, Problem 3HA4

Explanation of Solution

Solution for Class A network:

Number of subnets required	Number of bits to borrow for the subnet field	Maximum number of host per subnet.	Subnet mask in binary and decimal representation
10	4	1048574	Binary: 11111111.11110000.00000000.00000000 Decimal: 255.240.0.0
20	5	524286	Binary: 11111111.11111000.00000000.00000000 Decimal: 255.248.0.0
80	7	131070	Binary: 11111111.11111110.00000000.00000000 Decimal: 255.254.0.0
400	9	32766	Binary: 11111111.11111111.10000000.00000000 Decimal: 255.255.128.0
2000	11	8190	Binary: 11111111.11111111.11100000.00000000 Decimal: 255.255.224.0.

Explanation:

For 10 numbers of subnets:

• For Class A network, the byte allocation is network.host.host.host.
• First byte range for class A network is 1-126.
• Example for class A network address is 10.52.36.11.
• Using 1 bit, the user can create 2 subnets.
• Using 2 bits, the user can create 2² subnets which results in creation of 4 subnets...