In order to implement communication between applications via a network, a certain
number of protocols are used in a hierarchical structure. Which of the following is
the appropriate combination of the protocol names to be inserted into blanks A and B in
the description below?
When a web page is viewed on the Internet, the browser and the web server use a
protocol called A . Communication based on this A uses a
protocol of a lower layer called B and a protocol of a further lower layer
called IP (Internet Protocol).
A B
a) FTP Ethernet
b) HTTP TCP
c) SMTP POP3
d) WWW HTML