Implementing and Operating Cisco Data Center Core Technologies (DCCOR) — Question 507

An engineer must implement Strict Unicast Reverse Path Forwarding mode for IPv4 packets on the Etnerret1/1 interface on the Cisco Nexus 9500 Series Switch.
Which configuration achieves this goal?

Answer options

• A. interlace Ethernet1/1 ip address 172.16.10.1/24 ip verify unicast source reachable-via rx
• B. interface Ethernet1/1 ip address 172.16.10.1/24 ip verify unicast source any
• C. interface Ethernet1/1 ip address 172.16.10.1/24 ip verify unicast source reachable-via any
• D. interface Ethernet1/1 ip address 172.16.10.1/24 ip verify unicast source rx

Correct answer: A

Explanation

The correct answer is A because it sets up Strict Unicast Reverse Path Forwarding by specifying 'reachable-via rx', which checks the source's reachability through the receiving interface. Options B and C do not specify the correct reachability method for strict mode, and option D lacks the 'reachable-via' requirement, making them incorrect for this specific configuration.