1. How can we distinguish a multicast address in IPV4 addressing? How can we do so in IPv6 addressing? 2. How can we determine if an IPV4 packet is carrying an ICMP packet? 3. A router receives an...

Extracted text: 1. How can we distinguish a multicast address in IPV4 addressing? How can we do so in IPv6 addressing? 2. How can we determine if an IPV4 packet is carrying an ICMP packet? 3. A router receives an IPV4 packet with source IP address 130.45.3.3 and destination IP address 201.23.4.6. the router cannot find the destination IP address in its routing table. Which ICMP message should be send? 4. TCP receives a segment with destination port address 234. TCP checks and cannot find an open port for this destination. Which ICMP message should be send? 5. How does ICMPV6 different from the original version? What are the essential functions? 6. There 6 types in the extension header of IPV6. Explain each one of them.