Question

which of the following is part of the standard tcp/ip set of protocols, and is a standard way to send and receive messages across the internet?
a address book
b email
c snail mail
d calendar

Explanation:

Email uses protocols like SMTP (Simple Mail - Transfer Protocol) for sending and POP3/IMAP for receiving, which are part of the TCP/IP suite for Internet communication. Address book, snail mail, and calendar are not part of the TCP/IP protocols for sending - receiving messages across the Internet.

Answer:

B. Email