There are hosts running various IGP versions in the current network. The corresponding S multicast group address ranges of hosts of different versions are different, but its function is to receive…

Question

Options

• ATRUE
• BFALSE

• A
  83% (19)
• B
  17% (4)

Explanation

Option A is correct because Source-Specific Multicast (SSM) defines different group address ranges depending on the protocol version - for example, IPv4 SSM uses 232.0.0.0/8 while IPv6 SSM uses FF3x::/32 - yet both serve the same fundamental purpose: allowing a host to receive multicast traffic from a specific, named source rather than any sender to the group. This distinguishes SSM from Any-Source Multicast (ASM), where the receiver accepts traffic from any source. Option B is incorrect because it would imply either the address ranges are the same across versions (false) or that the function differs across versions (also false) - both of which contradict how SSM is standardized.

Memory tip: Think "same job, different zip code" - SSM always means source-specific delivery, but each IP version gets its own dedicated address range to operate in.

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