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Question 743 - N10-008 discussion

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A network engineer needs to change an entire subnet of SLAAC-configured workstation addresses. Which of the following methods would be the best for the engineer to use?

A.
Change the address prefix in ARP in order for the workstations to retrieve their new addresses.
Answers
A.
Change the address prefix in ARP in order for the workstations to retrieve their new addresses.
B.
Change the address prefix in a router in order for the router to advertise the new prefix with an ND.
Answers
B.
Change the address prefix in a router in order for the router to advertise the new prefix with an ND.
C.
Change the address prefix scope in a DHCP server in order for the workstations to retrieve their new addresses.
Answers
C.
Change the address prefix scope in a DHCP server in order for the workstations to retrieve their new addresses.
D.
Change the workstations' address prefix manually because an automated method does not exist.
Answers
D.
Change the workstations' address prefix manually because an automated method does not exist.
Suggested answer: B

Explanation:

SLAAC (Stateless Address Autoconfiguration) is a mechanism that enables each host on the network to auto-configure a unique IPv6 address without any device keeping track of which address is assigned to which node12.SLAAC uses link-local addresses and the interface's MAC address or a random number to generate the host portion of the IPv6 address2.SLAAC also relies on Router Solicitation (RS) and Router Advertisement (RA) messages to obtain the network prefix and other information from a router12. Therefore, to change an entire subnet of SLAAC-configured workstation addresses, the network engineer needs to change the address prefix in a router and let the router advertise the new prefix with an ND (Neighbor Discovery) message.This way, the workstations will receive the new prefix and update their IPv6 addresses accordingly3.

Reference 1- IPv6 Stateless Address Auto-configuration (SLAAC) | NetworkAcademy.io 2- IPv6 SLAAC -- Stateless Address Autoconfiguration - Study-CCNA 3- Mastering IPv6 SLAAC Concepts and Configuration - Cisco Press

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asked 02/10/2024
Kingsley Tibs
43 questions
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