10) Explain what is the purpose of the TTL field in the Layer 3 Packet header? (5 Pts) 11) Summarization is the process of compressing and reducing multiple IP subnets on a router such as to minimize the amount of route entries in the routing table of the router. This is necessary to minimize the amount of memory being used on a router for route entries. How would you summarize the following IPv4 route entries into a one line entry? Provide the line entry(s) along with the revised subnet mask that will cover all (8) of these route entries. (5 Pts) 172.16.64.0/24 172.16.65.0/24 172.16.66.0/24 172.16.67.0/24 172.16.68.0/24 172.16.69.0/24 172.16.70.0/24 172.16.71.0/24