Designing Cisco Network Service Architectures (ARCH, legacy) — Question 70

Which of the following two statements about Cisco NSF and SSO are the most relevant to the network designer? (Choose two.)

Answer options

• A. You can reduce outages to 1 to 3 seconds by using SSO in a Layer 2 environment or Cisco NSF with SSO in a Layer 3 environment.
• B. SSO and NSF each require the devices to either be graceful restart-capable or graceful restart- aware.
• C. In a fully redundant topology adding redundant supervisors with NSF and SSO may cause longer convergence times than single supervisors with tuned IGP timers
• D. The primary deployment scenario for Cisco NSF with SSO is in the Distribution and Core layers.
• E. Cisco NSF-aware neighbor relationships are independent of any tuned IGP timers

Correct answer: A, C

Explanation

The correct answers A and C highlight important considerations for network designers regarding the impact of SSO and NSF on outage times and convergence times in redundant topologies. Options B, D, and E, while relevant, do not address the critical operational implications of using SSO and NSF in the same way as A and C do.