EUI-64

A network technician wants to address PCs on a subnet with IPv6 in addition to IPv4

The subnet currently uses a DHCP server that only supports IPv4

Which of the following should the technician use to assign IPv6 addresses automatically without DHCP?

A.

APIPA

B.

MAC reservations

C.

EUI-64

D.

IPv4 to IPv6 tunnel.

C.

The correct answer is C. EUI-64.

Explanation: IPv6 uses a different mechanism to assign addresses compared to IPv4. While DHCP is the standard way of automatically assigning IPv4 addresses, IPv6 has a couple of options, one of which is EUI-64.

EUI-64 stands for Extended Unique Identifier-64, and it is a method of automatically generating an IPv6 interface ID from a device's MAC address. This interface ID is used in combination with the network prefix to form a unique IPv6 address for the device.

To use EUI-64 to assign IPv6 addresses, the network technician would need to configure the network to advertise the network prefix using a router advertisement (RA) message. The RA message tells devices on the network what the network prefix is and how long the address is valid for. The devices then use EUI-64 to generate their interface IDs and combine them with the network prefix to form their IPv6 address.

APIPA (Automatic Private IP Addressing) is a mechanism used in IPv4 to assign addresses when a DHCP server is not available. MAC reservations are a feature of DHCP that allows a DHCP server to assign a specific IP address to a device based on its MAC address. An IPv4 to IPv6 tunnel is a method of encapsulating IPv6 packets within IPv4 packets to allow them to traverse an IPv4 network.

Therefore, the correct answer to this question is C. EUI-64.