hardMultiple ChoiceObjective-mapped
300-410 Practice Question: An engineer configures a DHCP server on a Cisco…
An engineer configures a DHCP server on a Cisco router to assign IP addresses from a pool. Clients receive addresses, but when the engineer checks 'show ip dhcp binding', no bindings are displayed. Which is the most likely explanation?
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 dhcp excluded-address' command includes the entire pool range, so no addresses are assigned and no bindings are created.
The 'show ip dhcp binding' command only displays bindings that are currently active. If the lease time is very short or the clients release addresses, bindings may not appear. However, a more subtle edge case is when the DHCP server is configured with 'ip dhcp excluded-address' that includes the pool range, causing the server to not assign addresses but still respond with NAKs.
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 DHCP pool is configured with 'lease infinite', causing bindings to be stored in a different database.
Why it's wrong here
Incorrect: Infinite lease still creates bindings; they should appear.
- ✓
The 'ip dhcp excluded-address' command includes the entire pool range, so no addresses are assigned and no bindings are created.
Why this is correct
Correct: If the excluded address range covers the pool, the server will not assign any addresses, and no bindings are created.
- ✗
The router's DHCP server is configured in 'database' mode, which stores bindings externally.
Why it's wrong here
Incorrect: The database command stores bindings in a file, but they still appear in 'show ip dhcp binding'.
- ✗
The clients are using DHCPv6, not DHCPv4.
Why it's wrong here
Incorrect: The command 'show ip dhcp binding' is for IPv4; DHCPv6 uses different commands.
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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.