The answer is that the DHCP server has two active leases. This is correct because the output of the `show ip dhcp binding` command lists two entries, each with an IP address, a client-ID in hexadecimal format, a future lease expiration time, and the type "Automatic," which indicates these addresses were dynamically assigned by the server rather than manually configured. On the ENCOR 350-401 exam, this command tests your ability to interpret DHCP server state and distinguish between active bindings and expired or manual entries; a common trap is misreading the multi-line client-ID as separate entries or assuming the lease expiration time means the lease has already ended. Remember that each IP address row represents one binding, and the "Automatic" type confirms dynamic allocation. A useful memory tip: "One IP, one lease—count the rows, not the lines."
350-401 NAT and DHCP Practice Question
This 350-401 practice question tests your understanding of nat and dhcp. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network engineer runs the following command on Router R4:
R4# show ip dhcp binding
Bindings from all pools not associated with VRF:
IP address Client-ID/ Lease expiration Type
Hardware address/
User name
10.0.0.10 0063.6973.636f.2d30. Mar 01 2025 12:00 PM Automatic
3030.302e.3030.3030.
2e30.3030.312d.4574.
30
10.0.0.11 0063.6973.636f.2d30. Mar 01 2025 12:05 PM Automatic
3030.302e.3030.3030.
2e30.3030.312d.4574.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The DHCP server has two active leases.
The output shows two DHCP bindings with automatic type, meaning they were dynamically assigned. The client-ID is a hex string representing the client identifier. Lease expiration times are shown.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Both clients have static DHCP reservations.
Why it's wrong here
The type is 'Automatic', not 'Manual' which would indicate a reservation.
✓
The DHCP server has two active leases.
Why this is correct
Two bindings are listed, both with future lease expiration times.
Related concept
Read the scenario before looking for a memorised answer.
✗
The DHCP server is out of addresses.
Why it's wrong here
Only two addresses are shown; there is no indication of exhaustion.
✗
The clients are using DHCPv6.
Why it's wrong here
The client-ID format is typical for DHCPv4; DHCPv6 uses DUID.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
Only two addresses are shown; there is no indication of exhaustion.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-401 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 350-401 question in full detail.
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
NAT and DHCP — This question tests NAT and DHCP — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The DHCP server has two active leases. — The output shows two DHCP bindings with automatic type, meaning they were dynamically assigned. The client-ID is a hex string representing the client identifier. Lease expiration times are shown.
What should I do if I get this 350-401 question wrong?
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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