Question 1: Stored on a flash memory device is a 200-megabyte (MB) message to be transmitted by an e-mail from one server to another, passing three nodes across the network. This network forces packets to be of size 10KB, excluding a packet header of 40 bytes. Nodes are 400 miles apart, and servers are 50 miles away from their corresponding nodes. All transmission links are of type 100Mb/s. Answer the following: 1.1] In the case of message travelling through a connectionless network (Packet Switched) and with the processing time at each node is 0.2 seconds. Find the following: (a) Find the propagation delays per packet between a server and a node and between nodes. (b) Find the total time required to send this message. 1.2] In the case of message travelling through a connection-oriented network (Circuit Switched). Find the following: (a) Find the total time required to send this message. please explain each step very clear ...... special for how we find speed 2.3 ..