5. Your subnet has an IP address 128.23.75.0 and a subnet mask 255.255.255.128. What is the IP-address range that can be assigned to hosts in that subnet? 6. What subnet masks would possibly be used by a network that has an internal subnet with the IP address 128.235.232.160 and a host in another subnet with the IP address 128.235.245.226. (Make a distinction between what is called a network and a subnet). Assume that the entire network would use a single subnet mask, i.e., the same subnet mask on all subnets in the network, and a contiguous subnet mask. 7. Find the fragment offset values in the IP header for each fragment of a datagram with a 400- byte payload (IP header with no options) when the datagram travels through a segment with an MTU= 100 bytes. 8. Assume that you have four hosts in an Ethernet segment. These hosts have their IP addresses as shown below and those addresses are fixed (they cannot be changed). Find 1 subnet mask these hosts can possibly use such that they can be considered in the same subnet. Please indicate explain your solution. Host1: 145.122.146.25, Host2: 145.122.95.137, Host3: 145.122.42.9, Host4: 145.122.48.56