Which protocol is used to transfer Usenet articles?

Which protocol is used to transfer Usenet articles?

• A. Network Time Protocol (NTP)
• B. Kerberos—authentication system
• C. Post Office Protocol 3 (POP3)
• D. Network News Transfer Protocol (NNTP)

Answer: (D)

This question is about which protocol handles the transfer of Usenet articles. The answer is that the Network News Transfer Protocol (NNTP) is the protocol designed for distributing and retrieving Usenet articles. NNTP runs over TCP and provides the commands needed to browse newsgroups, retrieve articles, read headers, and post new articles to a server. When you connect to a Usenet server, NNTP lets you select a group, fetch articles by message ID, and post new ones, enabling the propagation of articles across multiple servers. Other protocols mentioned have different roles: Network Time Protocol (NTP) is used to synchronize clocks between systems, Kerberos is an authentication system, and Post Office Protocol 3 (POP3) is used to retrieve email from a mail server. These do not handle Usenet article transfer, which is precisely the job of NNTP.

This question is about which protocol handles the transfer of Usenet articles. The answer is that the Network News Transfer Protocol (NNTP) is the protocol designed for distributing and retrieving Usenet articles. NNTP runs over TCP and provides the commands needed to browse newsgroups, retrieve articles, read headers, and post new articles to a server. When you connect to a Usenet server, NNTP lets you select a group, fetch articles by message ID, and post new ones, enabling the propagation of articles across multiple servers.

Other protocols mentioned have different roles: Network Time Protocol (NTP) is used to synchronize clocks between systems, Kerberos is an authentication system, and Post Office Protocol 3 (POP3) is used to retrieve email from a mail server. These do not handle Usenet article transfer, which is precisely the job of NNTP.