SMTP, use port a, TCP b. Port 2 c. Port 80 d. Port 26 Given a network core of 4 routers with 1.0 Mbps bps communication links connecting them (identical), with a source host and an end host. Compute the total Transmission Delay for a given packet of length 1000 bits a. 6 msec b. 5 msec c. 4 mse d. By acting as a server for requests from actual client and as a server for request to the requested website (file/object)