Which of the following is used to manage IP multicast sessions?

A.
NNTP

B.
ICMP

C.
IGMP

D.
SNMP

Explanation:
IGMP (Internet Group Management Protocol) is used to manage IP multicast sessions. It does not
provide error reporting.
Incorrect Answers:
A: NNTP (Network News Transfer Protocol) is used to access Usenet news servers. It does not
manage IP multicast sessions.
B: ICMP (Internet Control Message Protocol) is used for network management and control. It
provides error testing and reporting for TCP/IP. It does not manage IP multicast sessions
D: SNMP (Simple Network Management Protocol) is a communications protocol that collects
information about network devices, such as hubs, routers, and bridges. It does not manage IP
multicast sessions.Reference:David Groth and Toby Skandier, Network+ Study Guide (4th
Edition), Sybex, Alameda CA, 2005, pp. 112-118.