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 engineer is troubleshooting a Cisco ISE deployment where some endpoints are not being profiled correctly. The administrator notices that the endpoints are not sending DHCP requests. Which profiling probe should be primarily used to identify these endpoints?
NetFlow probe
NetFlow probe analyzes traffic flows and can profile endpoints based on IP and port information.
DHCP probe
Why wrong: DHCP probe relies on DHCP traffic, which is not present.
HTTP probe
Why wrong: HTTP probe requires HTTP traffic, which may not be present.
DNS probe
Why wrong: DNS probe can identify hostnames but not if DNS queries are not sent.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
NetFlow probe
The correct answer is A (NetFlow probe) because when endpoints do not send DHCP requests, the DHCP probe cannot collect any data. The NetFlow probe analyzes network traffic flows to identify endpoints based on IP addresses, ports, and protocols, even without DHCP activity. This allows Cisco ISE to profile endpoints by observing their communication patterns, such as HTTP or DNS traffic, which still occur even if DHCP is not used.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
NetFlow probe
Why this is correct
NetFlow probe analyzes traffic flows and can profile endpoints based on IP and port information.
Related concept
Read the scenario before looking for a memorised answer.
DHCP probe
Why it's wrong here
DHCP probe relies on DHCP traffic, which is not present.
HTTP probe
Why it's wrong here
HTTP probe requires HTTP traffic, which may not be present.
DNS probe
Why it's wrong here
DNS probe can identify hostnames but not if DNS queries are not sent.
Common exam traps
Cisco often tests the misconception that DHCP is the only way to profile endpoints, leading candidates to choose the DHCP probe, but the trap here is recognizing that NetFlow provides visibility even when DHCP traffic is absent.
Detailed technical explanation
The NetFlow probe in Cisco ISE uses NetFlow v9 or IPFIX records exported from network devices to collect flow data, including source/destination IPs, ports, and protocol types. This enables profiling of endpoints that use static IP addresses or do not participate in DHCP, as the probe can infer device type from traffic patterns like OS fingerprinting via TCP window sizes or application signatures. In real-world scenarios, devices like printers or IoT sensors often use static IPs and skip DHCP, making NetFlow essential for visibility.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Secure Network Access, Visibility and Enforcement — study guide chapter
Learn the concepts, then practise the questions
Secure Network Access, Visibility and Enforcement practice questions
Targeted practice on this topic area only
All 350-701 questions
500 questions across all exam domains
Cisco SCOR / CCNP Security Core 350-701 study guide
Full concept coverage aligned to exam objectives
350-701 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise 350-701 questions linked to Endpoint Protection and Detection.
Practise 350-701 questions linked to Secure Network Access, Visibility and Enforcement.
Practise 350-701 questions linked to Security Concepts.
Practise 350-701 questions linked to Network Security.
Practise 350-701 questions linked to Cloud Security.
Practise 350-701 questions linked to Content Security.
Practise 350-701 questions linked to 350-701 fundamentals.
Practise 350-701 questions linked to 350-701 scenario.
Practise 350-701 questions linked to 350-701 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Secure Network Access, Visibility and Enforcement — This question tests Secure Network Access, Visibility and Enforcement — Read the scenario before looking for a memorised answer..
The correct answer is: NetFlow probe — The correct answer is A (NetFlow probe) because when endpoints do not send DHCP requests, the DHCP probe cannot collect any data. The NetFlow probe analyzes network traffic flows to identify endpoints based on IP addresses, ports, and protocols, even without DHCP activity. This allows Cisco ISE to profile endpoints by observing their communication patterns, such as HTTP or DNS traffic, which still occur even if DHCP is not used.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 11, 2026
This 350-701 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 350-701 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.