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300-410 Practice Question: Which DHCPv4 option is used by a client to…
Which DHCPv4 option is used by a client to request a specific IP address in the DHCPREQUEST message?
⚠ Common exam trap
Cisco often tests the distinction between Option 50 (Requested IP Address) and Option 54 (Server Identifier), as candidates may confuse the client's request for a specific IP with the server identification used in unicast DHCPREQUEST messages during the selection phase.
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
✓
Option 50 (Requested IP Address)
DHCPv4 Option 50 (Requested IP Address) is specifically used by a client in the DHCPREQUEST message to request a previously offered IP address or to attempt to renew a specific address. This option allows the client to indicate which IP address it wants to use, ensuring the server can confirm or deny the request based on availability and policy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Option 12 (Host Name)
Why it's wrong here
Option 12 is for host name, not IP address request.
- ✓
Option 50 (Requested IP Address)
Why this is correct
Option 50 carries the requested IP address in DHCPREQUEST.
- ✗
Option 54 (Server Identifier)
Why it's wrong here
Option 54 identifies the server, not the requested IP.
- ✗
Option 51 (IP Address Lease Time)
Why it's wrong here
Option 51 specifies lease time, not the requested address.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 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 300-410 exam.