In Figure 214 page 67 of the textbook a What will be the va

. In Figure 2-14 (page 67 of the textbook): a) What will be the value in the destination port number field if a packet arrives for the e-mail application? b) When the HTTP program sends an HTTP response message to a client PC, in what field of what message will it place the value 80?

Solution

Answer:

a) 25 is the value in the destination port number field if a packet arrives for the e-mail application

b) It will place the value 80 in the source port number field of the TCP segment contained in the transmitted packet.