(a) What is the usable number of host IP addresses available on a network that has a /26 mask? Write down the subnet mask of this network. Write…

(a) What is the usable number of host IP addresses available on a network that has a /26 mask? Write down the subnet mask of this network. Write down the first and the last IP address that can be assigned to host PCs if the network address is 192.168.30.128/26. What address should be used for broadcast purpose in this network?

(b) How is Hierarchical DNS resolution done in Domain Naming System? Give an example resolution for xyz.uv.gov.bd domain name.