Implementing Cisco Service Provider Advanced Routing Solutions (SPRI) — Question 42

Which difference must an engineer consider when implementing inter-domain and intra-domain multicast routing on the network?

Answer options

• A. Intra-domain routing is dependent on the RP router within the same SP network, but inter-domain routing reduces the dependency on the other SP network.
• B. Intra-domain routing allows the service provider to control incoming and outgoing multicast data streams on its network, but inter-domain routing limits the service provider's control.
• C. Inter-domain routing supports policy routing to connect different multicast domains using PIM-SM, but intra-domain routing supports policy routing using PIM-SM only within a single domain.
• D. Intra-domain routing uses the PIM and MBGP protocols for multicast routing, but inter-domain routing must use PIM-SSM or MSDP.

Correct answer: B

Explanation

The correct answer is B because intra-domain routing gives the service provider greater control over multicast data streams within their own network, while inter-domain routing involves multiple service providers, thus limiting that control. Options A, C, and D incorrectly describe the roles and functionalities of intra-domain and inter-domain routing, particularly regarding control and the protocols used.