Which of the following is an Internet application protocol used for transporting Usenet news
articles between news servers and for reading and posting articles by end-user client applications?
A.
NNTP
B.
BOOTP
C.
DCAP
D.
NTP
Explanation:
The Network News Transfer Protocol (NNTP) is an Internet application protocol used for
transporting Usenet news articles (netnews) between news servers and for reading and posting
articles by end user client applications. NNTP is designed so that news articles are stored in a
central database, allowing the subscriber to select only those items that he wants to read.
Answer option D is incorrect. Network Time Protocol (NTP) is used to synchronize the timekeeping
among the number of distributed time servers and clients. It is used for the time management in a
large and diverse network that contains many interfaces. In this protocol, servers define the time,
and clients have to be synchronized with the defined time. These clients can choose the most
reliable source of time defined from the several NTP servers for their information transmission.
Answer option C is incorrect. The Data Link Switching Client Access Protocol (DCAP) is an
application layer protocol that is used between workstations and routers for transporting
SNA/NetBIOS traffic over TCP sessions. It was introduced in order to address a few deficiencies
by
the Data Link Switching Protocol (DLSw). The DLSw raises the important issues of scalability and
efficiency, and since DLSw is a switch-to-switch protocol, it is not efficient when implemented on
workstations. DCAP was introduced in order to address these issues.
Answer option B is incorrect. The BOOTP protocol is used by diskless workstations to collect
configuration information from a network server. It is also used to acquire a boot image from the
server.