- A
The UDP jitter operation measures one-way delay, jitter, and packet loss in both directions.
Correct because UDP jitter probes timestamp packets at both ends to compute one-way metrics and can detect packet loss.
- B
The ICMP echo operation measures round-trip time and can also provide jitter calculations.
Correct because ICMP echo measures RTT, and when multiple probes are sent, jitter can be calculated from the variation in RTT.
- C
The TCP connect operation measures the time to establish a TCP three-way handshake.
Correct because this probe type measures the time from SYN to SYN-ACK completion, indicating application-layer responsiveness.
- D
The HTTP operation measures the time to resolve the DNS name of the target web server.
Why wrong: Incorrect because HTTP probes measure the time to retrieve a web page (including TCP connect and HTTP GET), but DNS resolution time is not part of the HTTP probe; it can be measured separately with a DNS probe.
- E
The ICMP echo operation requires the IP SLA responder to be enabled on the target device.
Why wrong: Incorrect because ICMP echo uses standard ICMP, which does not require the IP SLA responder; the responder is only needed for UDP-based probes.
Quick Answer
The answer is that the TCP connect operation measures the time to establish a TCP three-way handshake. This is correct because IP SLA probe types are designed to emulate specific application traffic and capture distinct performance metrics; the TCP connect probe specifically tracks the duration required to complete the SYN, SYN-ACK, ACK sequence, reflecting server responsiveness rather than raw network latency. On the ENCOR 350-401 exam, you must differentiate probe characteristics—for instance, ICMP echo measures round-trip time and packet loss, while UDP jitter captures one-way delay, jitter, and packet loss. A common trap is confusing TCP connect with HTTP probes, which measure web page retrieval time. Remember the memory tip: TCP connect = handshake time, not data transfer.
CCNP IP SLA Practice Question
This 350-401 practice question tests your understanding of ip sla. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Which three statements about IP SLA probe types and their characteristics are true? (Choose three.)
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 UDP jitter operation measures one-way delay, jitter, and packet loss in both directions.
Different IP SLA probe types measure different network metrics. UDP jitter measures one-way delay, jitter, and packet loss. ICMP echo measures round-trip time and packet loss. TCP connect measures the time to establish a TCP connection. HTTP probes measure the time to retrieve a web page. The probe type determines what metrics are available and how the probe is configured.
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.
- ✓
The UDP jitter operation measures one-way delay, jitter, and packet loss in both directions.
Why this is correct
Correct because UDP jitter probes timestamp packets at both ends to compute one-way metrics and can detect packet loss.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
The ICMP echo operation measures round-trip time and can also provide jitter calculations.
Why this is correct
Correct because ICMP echo measures RTT, and when multiple probes are sent, jitter can be calculated from the variation in RTT.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
The TCP connect operation measures the time to establish a TCP three-way handshake.
Why this is correct
Correct because this probe type measures the time from SYN to SYN-ACK completion, indicating application-layer responsiveness.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The HTTP operation measures the time to resolve the DNS name of the target web server.
- ✗
The ICMP echo operation requires the IP SLA responder to be enabled on the target device.
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 350-401 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.
What to study next
Got this wrong? Here's your next step.
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.
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FAQ
Questions learners often ask
What does this 350-401 question test?
IP SLA — This question tests IP SLA — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The UDP jitter operation measures one-way delay, jitter, and packet loss in both directions. — Different IP SLA probe types measure different network metrics. UDP jitter measures one-way delay, jitter, and packet loss. ICMP echo measures round-trip time and packet loss. TCP connect measures the time to establish a TCP connection. HTTP probes measure the time to retrieve a web page. The probe type determines what metrics are available and how the probe is configured.
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.
About these practice questions
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Last reviewed: Jun 18, 2026
This 350-401 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 350-401 exam.
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