Lotus CLP Certification Exam 190-623

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

A. NNTP
B. ICMP
C. IGMP
D. SNMP
Answer: C
Explanation: IGMP (Internet Group Management Protocol)190-621 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.190-622 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.190-623 It does
not manage IP multicast sessions.

References:
David Groth and Toby Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda
CA, 2005, pp. 112-118.
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