Regarding any-source multicast (ASM) and source-specific multicast (SSM) models, which statements are true?

In the source-specific multicast (SSM) model, receivers indeed obtain the specific location of the multicast source in advance. This proactive approach is a hallmark of SSM, as it allows the receivers to directly subscribe to a specific source by using its unique multicast address. By possessing the knowledge of the source's address beforehand, receivers can efficiently set up their connections without requiring additional mechanisms for source discovery, which is essential for ensuring that they receive the desired multicast content without unnecessary delays or complications.

This characteristic differentiates SSM from any-source multicast (ASM), which relies on a range of sources and often requires a more dynamic approach to determine the source of the multicast traffic being received. In ASM, receivers may need to query or rely on additional protocols to identify and connect to sources, making the process less straightforward than in SSM.

The other options contrast the operations of the SSM and ASM models in relevant ways but do not fully align with the accurate portrayal of how SSM functions regarding source knowledge and connectivity. Understanding this proactive sourcing in SSM clarifies its efficiency and use cases compared to ASM.