Which of the following protocols is used by IPv6 for MAC address resolution?
A.
NDP
B.
ARP
C.
DNS
D.
NCP
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The Neighbor Discovery Protocol (NDP) is a protocol in the Internet protocol suite used with Internet Protocol Version 6 (IPv6).
Neighbor Discovery Protocol (NDP, defined in RFC 4861) is an important protocol in IPv6. Neighbor Discovery Protocol (NDP) is based on ICMPv6 and is used to identify the relationships between different neighboring devices in an IPv6 network.
Many important functions of IPv6 like resolving MAC address of an IPv6 Address (in IPv4, ARP is used for this), Router Discovery etc., are now performed using Neighbor Discovery Protocol (NDP).
As mentioned, ARP (used in IPv4) was replaced by the NDP (Neighbour Discovery Protocol) for the following security reasons:
ARP Spoofing.
MAC Flooding.
MAC Duplicating
In addition:
DNS is used to resolve NetBios names and IP addresses. MAC addresses do not enter into the equation
NCP has nothing to do with MAC addresses: The Network Control Program (NCP) provided the middle layers of the protocol stack running on host computers of the ARPANET, the predecessor to the modern Internet. NCP preceded the Transmission Control Protocol (TCP) as a transport layer protocol used during the early ARPANET.
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