In multicast, the (___) model provides services for bound data flows of specific sources and groups. When the recipient host joins the multicast group, it can specify which source the host intends…

Question

Options

• ASSM
• B
• C
• D

• A
  83% (20)
• B
  4% (1)
• C
  8% (2)
• D
  4% (1)

Explanation

SSM, or Source-Specific Multicast, is correct because it is the multicast delivery model that binds traffic to a specific (source, group) pair, written as (S,G). When a host joins using SSM, it declares not just the multicast group address it wants to receive but also the exact source IP address it will accept traffic from, filtering out all other senders. This contrasts with Any-Source Multicast (ASM), the alternative model, where a host joins a group and accepts data from any sender transmitting to that group address, without source filtering. The other answer choices in this question are left blank, so there are no additional distractors to address. Memory tip: think of SSM as a "VIP invite" system -- you only get in if both your name (source) and the party address (group) are on the list, which is why SSM is described as providing services for "bound" data flows.

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