N10-003 Network+ (2005)
Note 2: N10-003 Answers are not shown in demo questions.
Exhibits and Answers are only provided in the Full Version.
Demo Question 7.
Which of the following protocols are primarily responsible for managing IP multicast groups?
A. ARP
B. NNTP
C. ICMP
D. IGMP
Display Answer
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Answer: D
Explanation: IGMP (Internet Group Management Protocol) is responsible primarily for managing IP
multicast groups. IP multicasts can send messages or packets to a specified group of hosts
Incorrect answers:
A. ARP (Address Resolution Protocol) is responsible for resolving IP addresses to
Network Interface layer addresses, including hardware addresses. ARP can resolve an IP
address to a Media Access Control (MAC. address
B. NNTP (Network News Transfer Protocol) is used to access Usenet news servers. It
does not manage IP multicast sessions.
C. ICMP (Internet Control Management Protocol) provides maintenance and reporting
functions. ICMP is the protocol used by the PING program.
Reference:
David Groth and Toby Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda
CA, 2005, pp. 112-118.
Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Alameda,
Sybex, 2004, p 62-63.
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