Exam N10-009 Topic 5 Question 341 Discussion

Actual exam question for CompTIA's N10-009 exam
Question #: 341
Topic #: 5
A network administrator installed anew VLANto the network after a company added an additional floor to the office. Users areunable to obtain an IP addresson the new VLAN, but ports on existing VLANs are working properly. Which of the following configurations should the administrator update?

Suggested Answer: D Vote an answer

Comprehensive and Detailed Explanation:
When anew VLAN is created, it typically exists on a different subnet. IfDHCP servers are on a different VLAN, the networkneeds an IP helper addressto forward DHCP requests correctly. Without it, clients in the new VLANwon't receive an IP address.
Breakdown of Options:
* A. Scope size- Increasing the DHCP scope would not resolve the issue if requestsaren't reaching the server.
* B. Address reservations- Reservations only assign specific addresses to devices; they do not fix DHCP communication issues.
* C. Lease time- Changing the lease timedoes not impact DHCP functionality across VLANs.
* D. IP helper-Correct answer.This forwardsDHCP requestsacross VLANs to the DHCP server.

by Howar at Oct 11, 2025, 11:43 AM

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