LPIC-2 Network Client Management Practice Question
A DHCP server is configured to serve multiple subnets but only clients on one subnet receive IP addresses. The server is connected to a router that does not forward DHCP broadcasts. What should be configured to support the other subnets?
⚠ Common exam trap
It's easy for candidates to think adding more subnet declarations or using shared-network directives will fix the issue, but the core problem is the lack of broadcast forwarding, which only a relay agent can solve.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set up a DHCP relay agent on the other subnets
The router does not forward DHCP broadcasts, so clients on other subnets cannot reach the DHCP server. A DHCP relay agent (e.g., `dhcrelay` or `ip helper-address`) intercepts broadcast requests on those subnets and forwards them as unicast to the DHCP server, allowing the server to assign addresses from the appropriate subnet pools. This is the standard solution per RFC 1542 when routers do not support BOOTP forwarding.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Add more subnet declarations to the DHCP server
Why it's wrong here
Subnet declarations are already present.
- ✓
Set up a DHCP relay agent on the other subnets
Why this is correct
A relay forwards DHCP broadcasts across routers.
- ✗
Add 'shared-network' declarations
Why it's wrong here
Shared-network is for multiple subnets on same physical network, not for routing.
- ✗
Configure the router to act as a DHCP server
Why it's wrong here
The router may not be a DHCP server.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LPIC-2 practice question is part of Courseiva's free LPI certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the LPIC-2 exam.