Lpic 2 Linux Engineer · Free Practice Question Medium
Question 22
- A IPv6 automatically maps MAC addresses to IP addresses without a lookup process.
- B IPv6 uses Neighbor Discovery Protocol (NDP) instead of ARP.
- C IPv6 addresses are statically assigned, making ARP unnecessary.
- D ARP is replaced by DNS in IPv6 networks.
Reveal correct answer
Correct answer: B
A. In IPv6, the Neighbor Discovery Protocol (NDP) is responsible for mapping IPv6 addresses to link-layer addresses (such as MAC addresses) without the need for a separate lookup process like ARP in IPv4. NDP combines the functions of ARP and ICMP Router Discovery in IPv4.
B. IPv6 uses Neighbor Discovery Protocol (NDP) instead of ARP to discover and maintain the link-layer addresses of devices on the same network. NDP performs functions similar to ARP but is more efficient and provides additional features such as address resolution, router discovery, and duplicate address detection.
C. IPv6 addresses can be assigned dynamically using stateless address autoconfiguration or manually configured. However, the method of address assignment does not eliminate the need for address resolution protocols like ARP. Neighbor Discovery Protocol (NDP) in IPv6 handles address resolution tasks.
D. DNS (Domain Name System) is a protocol used for translating domain names to IP addresses and vice versa. While DNS is essential for name resolution in both IPv4 and IPv6 networks, it does not replace the functionality of ARP in mapping IP addresses to MAC addresses at the link layer. IPv6 uses Neighbor Discovery Protocol (NDP) for this purpose.
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