What must occur before a workstation can exchange HTTP packets with a web server?
A.
A UDP connection must be established between the workstation and its default gateway.
B.
A UDP connection must be established between the workstation and the web server.
C.
A TCP connection must be established between the workstation and its default gateway.
D.
A TCP connection must be established between the workstation and the web server.
E.
An ICMP connection must be established between the workstation and its default gateway.
F.
An ICMP connection must be established between the workstation and the web server.
Explanation:
HTTP uses TCP port 80.
http://pentestlab.wordpress.com/2012/03/05/common-tcpip-ports/
TCP is one of the main protocols in TCP/IP networks. Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and also guarantees that packets will be delivered in the same order in which they were sent
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