300-410 Question 139

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose C1

  correct is C : https://www.exam-answer.com/configure-reverse-path-forwarding

• 10

  Ref: Security - Configuring Network Security [Support] - Cisco Systems “… Configuring the Unicast RPF Check Mode There are two Unicast RPF check modes: • Strict check mode, which verifies that the source IP address exists in the FIB table and verifies that the source IP address is reachable through the input port. • Exist-only check mode, which only verifies that the source IP address exists in the FIB table. … When configuring the Unicast RPF check mode, note the following information: • Use the rx keyword to enable strict check mode. • Use the any keyword to enable exist-only check mode. • Use the allow-default keyword to allow use of the default route for RPF verification. …” The route lookup failed, but the prefix is in the routing table. RPF Exist-only check mode is the way to go. A. ip verify unicast source reachable-via l2-src Wrong answer. B. ip verify unicast source reachable-via allow-default Wrong answer. C. ip verify unicast source reachable-via any Correct answer. D. ip verify unicast source reachable-via rx Wrong answer.

• 1

  Thanks @GreatDane for providing information about the questions, this makes easier the study