Implementing Secure Solutions with Virtual Private Networks (SVPN) — Question 60

Which feature allows a DMVPN Phase 3 spoke to switch to an alternate hub when the primary hub is unreachable?

Answer options

• A. multicast PIM
• B. backup NHS
• C. per-tunnel jitter probes
• D. NHRP shortcut

Correct answer: B

Explanation

The correct answer is B, backup NHS, as it allows a spoke to use an alternate hub if the primary hub fails. The other options, while related to DMVPN, do not provide the specific functionality for hub failover that backup NHS offers.