Which three are characteristics of an IPv6 anycast address? (Choose three.)

The correct answer is B. one-to-nearest communication model E. the same address for multiple devices in the group F. delivery of packets to the group interface that is closest to the sending device. An IPv6 anycast address is assigned to multiple devices (E is true - the same address is shared among multiple interfaces), but packets sent to that address are delivered only to the single nearest device in the group, as determined by routing protocol metrics (F is true). This d

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Question

Which three are characteristics of an IPv6 anycast address? (Choose three.)

Options

Aone-to-many communication model
Bone-to-nearest communication model
Cany-to-many communication model
Da unique IPv6 address for each device in the group
Ethe same address for multiple devices in the group
Fdelivery of packets to the group interface that is closest to the sending device

How the community answered

(38 responses)

A
3% (1)
B
92% (35)
C
5% (2)

Explanation

An IPv6 anycast address is assigned to multiple devices (E is true - the same address is shared among multiple interfaces), but packets sent to that address are delivered only to the single nearest device in the group, as determined by routing protocol metrics (F is true). This defines the one-to-nearest communication model (B is true). It is NOT one-to-many (that is multicast) nor any-to-many. Each device in an anycast group does NOT have a unique address - they all share the identical anycast address, which is what distinguishes anycast from unicast. Anycast is commonly used for services like DNS root servers to route clients to the geographically closest server.

Topics

#IPv6 anycast#one-to-nearest#anycast address#IPv6 addressing

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