Computer Network

3. Suppose you have the following four 16-bit words: 0000101010110111 0010101100101111 1000101110101101 0000101010100101 Show the UDP checksum steps in both sender and receiver sides. (25 pts) 4. Consider Fig.1, What are the source and destination port values in the segments flowing from the server back to the clients' processes? What are the source and destination IP addresses in the network-layer datagrams carrying the transport-layer segments? Web client host Web server 8 Per-connection HTTP processes LITT source port: dest. port: 7532 80 source IP dest. IP source port: 26145 source IP dest. port: 80 dest. IP: Transport layer demultiplexing Web client host A source port: 26145 source IP dest. port 80 dest. IP: Fig 1. Two clients, using the same destination port number (80) to communicate with the same Web server application