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Exam N10-009 topic 1 question 274 discussion

Actual exam question from CompTIA's N10-009
Question #: 274
Topic #: 1
[All N10-009 Questions]

A network administrator installed a new VLAN to the network after a company added an additional floor to the office. Users are unable to obtain an IP address on the new VLAN, but ports on existing VLANs are working properly. Which of the following configurations should the administrator update?

  • A. Scope size
  • B. Address reservations
  • C. Lease time
  • D. IP helper
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Suggested Answer: D 🗳️
by AriGarcia at March 15, 2025, 4:12 p.m.

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AriGarcia
1 month, 3 weeks ago
Selected Answer: D
IP helper directly addresses the VLAN-specific DHCP delivery issue. The administrator needs to update the router’s configuration for the new VLAN (e.g., ip helper-address <DHCP_server_IP>) to relay requests to the server. While a missing DHCP scope could also be an issue, the question asks for a “configuration to update,” and IP helper is a network-side fix tied to the VLAN addition. Answer: D. IP helper
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