Match each DHCPv4 message in the DORA process to its role.
Drag a concept onto its matching description — or click a concept then click the description.
Client looks for DHCP servers
Server proposes an address and lease details
Client asks to use the offered address
Server confirms the lease
⚠ Common exam trap
Do not confuse the order or roles of DHCP messages. Remember that the client initiates with Discover, then the server Offers, the client Requests, and the server Acknowledges. The mnemonic DORA helps: Discover, Offer, Request, Ack.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Discover: Client broadcasts to locate DHCP servers
The DORA process includes Discover (client broadcast), Offer (server response), Request (client accepts), and Ack (server confirms). Additional messages like NAK and Decline handle errors.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Discover: Client broadcasts to locate DHCP servers
Why this is correct
The DHCPDISCOVER message is a UDP broadcast sent from the client's 0.0.0.0:68 source port to the 255.255.255.255:67 destination, reaching any DHCP servers on the same broadcast domain or relayed via an IP helper address. It is the opening step of the DORA process and simply asks, 'Is there a DHCP server available to provide lease parameters?' All DHCP servers that receive it may respond, but the client has not yet made any lease request or commitment.
Discover: Server responds with an IP lease offer
Why it's wrong here
A server's response with an IP lease offer is the DHCPOFFER message, the second step in DORA, where the server proffers a specific IPv4 address along with configuration parameters. The Discover message is client-initiated and broadcast solely to solicit that offer; it never carries an address proposal from a server. Thus, claiming the Discover performs the server's offer function reverses the roles in the process.
When this WOULD be correct
This option would be correct if the question asked: 'Which DHCP message does a server send to offer an IP address to a client?' In that context, the server's Offer message is the correct answer.
Discover: Client requests the offered IP address
Why it's wrong here
The client actually requests a specific offered IP address using the DHCPREQUEST message, which follows the Offer and is broadcast to select one server's lease and decline others. The DHCPDISCOVER is a preliminary exploration message sent before offers exist, so it cannot request a particular address. Additionally, the Discover broadcasts to all servers, while the Request is the binding selection that completes the client's intent.
When this WOULD be correct
This option would be correct for a question asking to match the DHCP Request message: 'Client requests the offered IP address' is the role of the Request message in the DORA process.
Discover: Server acknowledges the lease
Why it's wrong here
Lease acknowledgment is performed by the DHCPACK message, which is the final step of DORA and explicitly confirms the lease with an IP address, subnet mask, default gateway, and lease duration. The Discover message, by contrast, is sent before any offer exists and contains no lease attributes. Therefore, equating Discover with server-side lease acknowledgment misidentifies both the message type and the direction of the transaction.
When this WOULD be correct
This option would be correct if the question asked to match the DHCPACK message to its role: 'Server acknowledges the lease.'
Option-by-option analysis
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
Why this is correct
The DHCPDISCOVER message is a UDP broadcast sent from the client's 0.0.0.0:68 source port to the 255.255.255.255:67 destination, reaching any DHCP servers on the same broadcast domain or relayed via an IP helper address. It is the opening step of the DORA process and simply asks, 'Is there a DHCP server available to provide lease parameters?' All DHCP servers that receive it may respond, but the client has not yet made any lease request or commitment.
Why this is wrong here
In the DORA process, the Discover message is sent by the client to locate DHCP servers, not by the server. The server responds with an Offer message, not a Discover.
★ When this WOULD be the correct answer
This option would be correct if the question asked: 'Which DHCP message does a server send to offer an IP address to a client?' In that context, the server's Offer message is the correct answer.
Why candidates choose this
Candidates may confuse the roles of Discover and Offer messages, mistakenly thinking the server initiates the process with a Discover message or that the server's response is also called Discover.
Why this is wrong here
In the DORA process, the Discover message is the first step where the client broadcasts to locate DHCP servers. The client requests the offered IP address in the Request message, not Discover.
★ When this WOULD be the correct answer
This option would be correct for a question asking to match the DHCP Request message: 'Client requests the offered IP address' is the role of the Request message in the DORA process.
Why candidates choose this
Candidates may confuse the sequence of DORA messages, thinking the client's request for an IP address occurs during the Discover phase rather than the Request phase.
Why this is wrong here
In the DORA process, the Discover message is sent by the client to locate DHCP servers, not to acknowledge a lease. Acknowledgment occurs in the final step with the DHCPACK message from the server.
★ When this WOULD be the correct answer
This option would be correct if the question asked to match the DHCPACK message to its role: 'Server acknowledges the lease.'
Why candidates choose this
Candidates may confuse the roles of different DHCP messages, especially the Discover and Acknowledgment steps, due to the similar-sounding names or misremembering the sequence.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
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About these practice questions
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-301 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 200-301 exam.