A 500-byte message is split into 10 packets where each packet is encapsulated with a 10-byte header and a 10-byte trailer. If it takes 50 hops to reach the destination, what is the total transmission time? Assume 1ns to transmit 1 byte of data. All routers are store-and-forward. PROBLEM 2 For problem 1, what is the optimal number of packets to carry that message? PROBLEM3 A message is split into 20 packets. It takes 6000ns and 11 hops to reach the destination. What is the size of the packet? Assume 1 ns to transmit 1 byte of data. All routers are store-and-forward