Which three statements are true about IPv6 link local addresses? (Choose three.)
Click on the arrows to vote for the correct answer
A. B. C. D. E.ADE
The correct answers are A, D, and E.
A) IPv6 link-local addresses begin with the prefix fe80::/64. These addresses are used for communication between devices on the same link or network segment, and they are not routable outside of that segment.
D) Link-local addresses are not guaranteed to be unique outside of the network segment. This is because the same address can be used on different network segments without conflict, as long as they are not connected to each other.
E) Link-local addresses can be assigned manually or dynamically. Manual configuration of link-local addresses can be useful in situations where a device needs to communicate with another device on the same link or network segment, but the devices do not have access to a DHCPv6 server.
B) The statement that link-local addresses are optional is false. Link-local addresses are mandatory in IPv6, and all devices that support IPv6 must have a link-local address.
C) The statement that link-local addresses provide reachability to the Internet is false. Link-local addresses are used for communication within a network segment and are not routable outside of that segment. Global unicast addresses are used for Internet communication.
In summary, IPv6 link-local addresses are mandatory for all devices that support IPv6, and they are used for communication within a network segment. They begin with the prefix fe80::/64, can be assigned manually or dynamically, and are not guaranteed to be unique outside of the network segment.