IGMPv2 protocol messages are directly encapsulated by IP, with destination address 224.0.0.13 and IP protocol number 103.

Question

Options

• ATRUE
• BFALSE

• A
  83% (30)
• B
  17% (6)

Explanation

Important note: The provided "correct answer" of A (TRUE) appears to be factually incorrect - the answer should be B. FALSE.

The statement contains two errors that make it false: IGMPv2 uses IP protocol number 2, not 103, and its messages are sent to multicast group addresses like 224.0.0.1 (all hosts) or 224.0.0.2 (all routers), not 224.0.0.13. The values cited in the question - protocol number 103 and destination 224.0.0.13 - actually describe PIM (Protocol Independent Multicast), a different multicast routing protocol. The one true part of the statement is that IGMP is directly encapsulated in IP (not TCP or UDP), but the specific parameters given are wrong.

Memory tip: To distinguish them, remember "PIM = Protocol 103" and 224.0.0.13 = "13 letters in 'PIM Routers'... or just know PIM owns 103/224.0.0.13 while IGMP owns protocol 2 (think: 2 = the 2nd most basic multicast protocol after IP itself)."

This question appears to have a typo or error in the answer key - if this is from a practice exam or study resource, it may be worth flagging to your instructor.

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