Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 573

In which two ways does the IPv6 First-Hop Security Binding Table operate? (Choose two.)

Answer options

• A. by IPv6 HSRP to make sure neighbors are authenticated before being used as gateways
• B. by various IPv6 guard features to validate the data link layer address
• C. by the recovery mechanism to recover the binding table in the event of a device reboot
• D. by IPv6 routing protocols to securely build neighborships without the need of authentication
• E. by storing hashed keys for IPsec tunnels for the built-in IPsec features

Correct answer: B, C

Explanation

The correct answers are B and C because the IPv6 First-Hop Security Binding Table uses various guard features to validate the data link layer address and has a recovery mechanism to restore the binding table after a reboot. Options A, D, and E do not accurately describe the operational methods of the binding table in the context of First-Hop Security.