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Question 261 - SK0-005 discussion

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An administrator is troubleshooting a failed NIC in an application server. The server uses DHCP to get all IP configurations, and the server must use a

specific IP address. The administrator replaces the NIC, but then the server begins to receive a different and incorrect IP address. Which of the following will enable the server to get the proper IP address?

A.
Modifying the MAC used on the DHCP reservation
Answers
A.
Modifying the MAC used on the DHCP reservation
B.
Updating the local hosts file with the correct IP address
Answers
B.
Updating the local hosts file with the correct IP address
C.
Modifying the WWNN used on the DHCP reservation
Answers
C.
Modifying the WWNN used on the DHCP reservation
D.
Updating the NIC to use the correct WWNN
Answers
D.
Updating the NIC to use the correct WWNN
Suggested answer: A

Explanation:

A DHCP reservation is a way to assign a specific IP address to a device based on its MAC address, which is a unique identifier for each network interface card (NIC). When the administrator replaced the NIC, the MAC address of the server changed, and the DHCP server no longer recognized it as the same device. Therefore, the DHCP server assigned a different IP address to the server, which was incorrect for the application. To fix this problem, the administrator needs to modify the DHCP reservation to use the new MAC address of the NIC, so that the server can get the proper IP address.

A WWNN (World Wide Node Name) is a unique identifier for a Fibre Channel node, which is a device that can communicate over a Fibre Channel network. A WWNN is not related to DHCP or IP addresses, and it is not used for DHCP reservations. Therefore, options B and D are incorrect.

Updating the local hosts file with the correct IP address (option C) is also incorrect, because it does not solve the problem of getting the correct IP address from the DHCP server. The hosts file is a local file that maps hostnames to IP addresses, and it is used to override DNS queries. However, it does not affect how the DHCP server assigns IP addresses to devices. Moreover, updating the hosts file manually on every device that needs to communicate with the server is not a scalable or efficient solution.

How to reserve IP Address in DHCP Server - Ask Ubuntu

Static IP vs DHCP Reservation - The Tech Journal

How to Configure DHCP Server Reservation in Windows ... - ITIngredients

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asked 02/10/2024
Istvan Molnar
33 questions
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