1. how many subnet bits are required to create 20 Subnets?

2. If # of SN bits is 5,
• What is the length of the prefix in a class C network?
• What is the length of the prefix in a class B network?

3. If # of SN bits is 5, then in a class C network
• what is the length of the suffix?
• what is the block size?
• what is the # of hosts in each SN?