The answer is that the DHCP server is not configured to forward DHCP packets to ISE. This is correct because Cisco ISE passive identity mapping relies entirely on DHCP traffic to build IP-to-MAC address bindings for Active Directory users; without DHCP forwarding, ISE never receives the DHCPACK messages needed to associate a user’s IP address with their machine’s MAC address, causing missing or duplicate IP entries. On the Cisco SCOR 350-701 exam, this concept tests your understanding of how passive identity differs from active probes—many candidates mistakenly focus on AD domain join credentials or SNMP traps, but the core requirement is simply that DHCP packets reach ISE. A common trap is assuming the passive identity service itself is disabled, but the symptom of multiple IP addresses per workstation points directly to incomplete DHCP data, not a service failure. Memory tip: think “DHCP must be forwarded to ISE for passive identity to see the lease.”
350-701 Practice Question: Secure Network Access, Visibility and Enforcement
This 350-701 practice question tests your understanding of secure network access, visibility and enforcement. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
An organization is deploying Cisco ISE with passive identity mapping from Active Directory. They notice that users are not being correctly identified on the network, and some workstations are appearing with multiple IP addresses. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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 is not configured to forward DHCP packets to ISE.
Option B is correct because passive identity mapping via DHCP requires the DHCP server to forward DHCP packets to ISE. Without this, IP-to-MAC mappings are incomplete. Option A is incorrect because domain join credentials affect ISE-AD communication, not DHCP mapping. Option C is incorrect because SNMP traps are used for endpoint classification, not passive identity. Option D is incorrect because the passive identity service must be enabled, but the symptom points to missing DHCP data.
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.
✗
ISE is configured with incorrect Active Directory domain join credentials.
Why it's wrong here
This would prevent ISE from querying AD but does not directly cause multiple IP addresses.
✓
The DHCP server is not configured to forward DHCP packets to ISE.
Why this is correct
Without DHCP forwarding, ISE cannot correlate IP addresses to MAC addresses, leading to identification issues.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The ISE node is not configured for passive identity service.
Why it's wrong here
While this would cause issues, the symptom of multiple IP addresses is more indicative of DHCP data missing.
✗
The network switches are not configured with SNMP traps for MAC notification.
Why it's wrong here
SNMP traps are for endpoint classification, not passive identity mapping.
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.
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 350-701 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.
What to study next
Got this wrong? Here's your next step.
Identify which 350-701 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.
Secure Network Access, Visibility and Enforcement — This question tests Secure Network Access, Visibility and Enforcement — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The DHCP server is not configured to forward DHCP packets to ISE. — Option B is correct because passive identity mapping via DHCP requires the DHCP server to forward DHCP packets to ISE. Without this, IP-to-MAC mappings are incomplete. Option A is incorrect because domain join credentials affect ISE-AD communication, not DHCP mapping. Option C is incorrect because SNMP traps are used for endpoint classification, not passive identity. Option D is incorrect because the passive identity service must be enabled, but the symptom points to missing DHCP data.
What should I do if I get this 350-701 question wrong?
Identify which 350-701 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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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