Suppose a computer sends a packet at the network layer to another computer somewhere in the Internet. The logical destination address of the packet is cor- rupted. What happens to the packet? How can the source computer be informed of the situation?

Suppose a computer sends a packet at the network layer to another computer somewhere in the Internet. The logical destination address of the packet is cor- rupted. What happens to the packet? How can the source computer be informed of the situation?

For each of following ICMP messages, list their possible senders (routers, non-destination hosts, and destination hosts). a) Type: destination unreachable,Code: 2/3 – protocol/port is unreachable b) Type: source quench,Code: 0 c) Type: time exceeded,Code: 1 (note when the final destination does not receive all of the fragments in a settime, it discards the received fragments and sends a time-exceeded message (code 1) tothe original source) d) Type: Redirection,Code: 1 – redirect to a host-specific route

The ACK packets that pass from the recipient to the sender do not have sequence numbers in protocol rdt3.0, but they have an ACK area that includes the packet sequence number they are recognizing. Why does it not need sequence numbers for our ACK packets?