Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 366

An engineer has configured a router to use EUI-64, and was asked to document the IPv6 address of the router. The router has the following interface parameters: mac address C601.420F.0007 subnet 2001:DB8:0:1::/64
Which IPv6 addresses should the engineer add to the documentation?
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Answer options

• A. 2001:DB8:0:1:C601:42FF:FE0F:7
• B. 2001:DB8:0:1:FFFF:C601:420F:7
• C. 2001:DB8:0:1:FE80:C601:420F:7
• D. 2001:DB8:0:1:C601:42FE:800F:7

Correct answer: A

Explanation

The correct answer is A because EUI-64 converts the MAC address into a format suitable for IPv6 by inserting 'FFFE' in the middle and flipping the 7th bit of the first byte. The other options do not follow the EUI-64 format or contain incorrect modifications of the MAC address.