urgent solution please

Problem 1 Assuming MTU = 1500, into how many fragments will a 9000 byte datagrai headepayload) be frageted? Assumea standard 2 byte IP header. Show calculations. Problem 3 Which are the lowest and highs IP addresses assignahle to hosts in the CIDR range 148.4.64.0/18Recal that the addresses whose suffixes are al binary eos or a binary ones are not assignable to hosts. Problem 4 Considere ollowing NAT able at a router Private IP addr, port Public IP addr, port 10.1.1., 1000 10.1.1.2, 1000 10.1.1.3, 2000 148.4.29.14, 5000 148.4.29.14, 5001 148.4.29,14, 5002 An IP datagra public side with contiing a TCP scgut arives at the router from the Source IP addr 120.11.5.21 Source port: 80 Destination IP addr 148.4.29.14 Destination port: 5001 What wil be the source ip address, source port, destination ip address, and destination port after the datagram leaves the router toward the private side? Problem 5 Suppose vertex X has neighbors U, V, W. The shortest path from U to Z has length 20, the shorest path from V to Z has length 22, and the shortest path from W to has length 24. The cost of the XU link is 6, the oost of the XV link is 3 and the cost of the XW link is also 3. What is the length of the shortest path fro X to Z? If X had to enter a next hop for destination Z in its forwarding table, what would that next hop be