Question:
What message is sent by a host to check the uniqueness of an IPv6 address before using that address?
- neighbor solicitation
- ARP request
- echo request
- router solicitation
Explanation: In IPv6, Duplicate Address Detection (DAD) is used in place of ARP. An IPv6 host performs DAD by sending a neighbor solicitation (NS) message to its own IPv6 address to ensure the uniqueness of the address prior to using it.
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