Address Resolution Protocol (ARP) is used in IPv4 to resolve IP addresses into MAC addresses. However, in IPv6, ARP is completely replaced by the Neighbor Discovery Protocol (NDP), which is part of ICMPv6. Therefore, ARP is not used in IPv6 at all.
A. True → Incorrect. ARP is exclusive to IPv4.
B. False → Correct. IPv6 replaces ARP with ICMPv6-based mechanisms.
Extract from Official MTCNA Course Material – IPv6 Overview:
“IPv6 does not use ARP. Instead, it uses the Neighbor Discovery Protocol (NDP), which provides similar functionality using ICMPv6 messages.”
Extract from René Meneses MTCNA Study Guide – IPv6 Chapter:
“In IPv6, the legacy ARP protocol is replaced with Neighbor Solicitation and Advertisement messages as part of the Neighbor Discovery Protocol.”
Extract from MikroTik Wiki – IPv6 Concepts:
“ARP is not used in IPv6. Instead, Neighbor Discovery Protocol handles address resolution, router discovery, and prefix information.”
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