Fred opens a web browser and connects to the website. which of the following are typically true about what happens between fred's web browser and the web server? (choose two answers.)
a. messages flowing toward the server use udp destination port 80.
b. messages flowing from the server typically use rtp.
c. messages flowing to the client typically use a source tcp port number of 80.
d. messages flowing to the server typically use tcp.

c. Messages flowing to the client typically use a source TCP port number of 80.

d. Messages flowing to the server typically use TCP.

Explanation:

When fred open the web browser and start a connection to the www.certskills.com website.Two things happens from the mentioned things

1.Messages that are going to the server are use TCP(Transmission Control Protocol).

2.Message goes to the client uses port number 80 that is of TCP used for transferring web pages.

Because the port number 80 is reserved for the HTTP used for transferring web pages that uses TCP protocol.