mediumMultiple SelectObjective-mapped
CCNP Practice Question: Which three statements about DHCP relay are true?…
Which three statements about DHCP relay are true? (Choose three.)
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
✓
The ip helper-address command is used on a router interface to forward DHCP broadcasts to a DHCP server on a different subnet.
This question tests understanding of DHCP relay operation, including the use of ip helper-address, UDP port forwarding, and configuration requirements.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The ip helper-address command is used on a router interface to forward DHCP broadcasts to a DHCP server on a different subnet.
Why this is correct
Correct because ip helper-address converts DHCP broadcast to unicast and forwards it to the specified server.
- ✓
DHCP relay changes the source IP address of the DHCP packet to the IP address of the relay agent's outgoing interface.
Why this is correct
Correct because the relay agent sets the source IP to its own interface IP so the server can reply back to the relay.
- ✗
The ip helper-address command forwards only DHCP traffic by default.
Why it's wrong here
Incorrect because ip helper-address forwards multiple UDP broadcasts (e.g., TFTP, DNS, NetBIOS) by default, not just DHCP.
- ✓
DHCP relay inserts the gateway IP address (giaddr) field in the DHCP packet to indicate the subnet of the client.
Why this is correct
Correct because the relay agent sets the giaddr field to its own IP address, allowing the server to allocate an IP from the correct subnet.
- ✗
DHCP relay is required only when the DHCP server is on the same VLAN as the client.
Why it's wrong here
Incorrect because DHCP relay is needed when the server is on a different subnet or VLAN, not the same one.
Visual reference
About these practice questions
This 350-401 question is part of Courseiva's 1,175-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 practice question is part of Courseiva's free Cisco 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 350-401 exam.