Cisco Certified Network Associate (CCNA) Practice Exam

How do you set an interface to advertise via EIGRP for IPv6?

1. ipv6 eigrp 1

2. eigrp advertise 1

3. router eigrp 1

4. ipv6 router eigrp 1

The correct answer is: ipv6 eigrp 1

To configure an interface to advertise via EIGRP for IPv6, you need to enable the EIGRP process on the router's interface. The correct command, which involves enabling EIGRP for IPv6 on an interface, is "ipv6 eigrp X", where "X" represents the Autonomous System (AS) number for EIGRP. This command directly associates the specified interface with the EIGRP process, allowing it to start sending and receiving EIGRP packets for IPv6. The command "ipv6 eigrp 1" indicates that the interface will participate in EIGRP for IPv6 using AS number 1. This is a critical step in establishing EIGRP adjacencies and advertising the appropriate routes. The other commands do not fulfill the requirement for enabling EIGRP on an interface correctly. For instance, "router eigrp 1" is used to enter EIGRP configuration mode for the entire router, but it does not specify any interface. "eigrp advertise 1" does not represent a valid command in Cisco IOS for configuration, and "ipv6 router eigrp 1" is the command to enable EIGRP routing for IPv6 on the router level but does