ICND2: Interconnecting Cisco Networking Devices Part 2 (legacy) — Question 48

What is the advantage of using a multipoint interface instead of point-to-point subinterfaces when configuring a Frame Relay hub in a hub-and-spoke topology?

Answer options

• A. It avoids split-horizon issues with distance vector routing protocols.
• B. IP addresses can be conserved if VLSM is not being used for subnetting.
• C. A multipoint interface offers greater security compared to point-to-point subinterface configurations.
• D. The multiple IP network addresses required for a multipoint interface provide greater addressing flexibility over point-to-point configurations.

Correct answer: B

Explanation

The correct answer is B because a multipoint interface allows multiple devices to share a single IP subnet, conserving IP addresses when VLSM is not in use. Options A, C, and D do not accurately reflect the primary advantage of using multipoint interfaces in terms of IP address conservation.