Implementing Cisco IP Switched Networks (CCNP SWITCH, legacy) — Question 62

Which database is used to determine the validity of an ARP packet based on a valid IP-to-MAC address binding?

Answer options

• A. DHCP snooping database
• B. dynamic ARP database
• C. dynamic routing database
• D. static ARP database

Correct answer:

Explanation

The correct answer is B, the dynamic ARP database, as it specifically tracks the mappings of IP addresses to MAC addresses that have been learned dynamically. Option A, the DHCP snooping database, is related to DHCP but does not directly manage ARP packets. Option C, the dynamic routing database, pertains to routing information rather than ARP. Option D, the static ARP database, contains manually configured entries and does not validate dynamically learned ARP packets.