200-301 · Question #1102
Refer to the exhibit. IPv6 is being implemented within the enterprise. The command ipv6 unicast- routing is configured. Interface Gig0/0 on R1 must be configured to provide a dynamic assignment using
The correct answer is C. ipv6 address 2001:DB8:FFFF:FCF3::/64 eui-64. To enable dynamic IPv6 address assignment for the R1 Gig0/0 interface using the specified block, the EUI-64 method automatically generates the host portion of the global unicast address from the interface's MAC address.
Question
Refer to the exhibit. IPv6 is being implemented within the enterprise. The command ipv6 unicast- routing is configured. Interface Gig0/0 on R1 must be configured to provide a dynamic assignment using the assigned IPv6 block. Which command accomplishes this task?
Exhibits
Options
- Aipv6 address 2001:DB8:FFFF:FCF3::64 link-local
- Bipv6 address 2001:DB8:FFFF:FCF3::1/64
- Cipv6 address 2001:DB8:FFFF:FCF3::/64 eui-64
- Dipv6 address autoconfig 2001:DB8:FFFF:FCF2::/64
How the community answered
(27 responses)- A15% (4)
- B4% (1)
- C74% (20)
- D7% (2)
Why each option
To enable dynamic IPv6 address assignment for the R1 Gig0/0 interface using the specified block, the EUI-64 method automatically generates the host portion of the global unicast address from the interface's MAC address.
This command assigns a specific link-local address, which is not a dynamic global unicast assignment from the specified IPv6 block for routing purposes.
This command assigns a static IPv6 global unicast address, which does not meet the requirement for dynamic address assignment.
This command configures the interface to dynamically generate its IPv6 global unicast address using the EUI-64 format by deriving the host portion from its MAC address, combined with the provided network prefix `2001:DB8:FFFF:FCF3::/64`, fulfilling the requirement for dynamic assignment from the assigned block.
The `ipv6 address autoconfig` command typically allows an interface to acquire an address via SLAAC from a router advertisement, or dynamically assign a link-local address, which is not the explicit method for a router interface to dynamically derive its global unicast address from its MAC and a given prefix as requested by 'using the assigned IPv6 block'.
Concept tested: IPv6 EUI-64, SLAAC
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6/configuration/xe-16/ipv6-xe-16-book/ipv6-addr-cfg.html
Topics
Community Discussion
No community discussion yet for this question.

