- A
It measures round-trip time (RTT) between the source and destination.
The ICMP echo operation sends ICMP packets and calculates the RTT based on the reply.
- B
It measures jitter in the network path.
Why wrong: Jitter measurement requires a UDP jitter operation, not ICMP echo.
- C
The operation must be scheduled using the 'ip sla schedule' command.
After configuring the operation, it must be scheduled to start and optionally repeat.
- D
The destination can be specified as a hostname without any additional configuration.
Why wrong: The destination must be an IP address unless DNS is configured; hostnames are not automatically resolved.
- E
The operation runs continuously by default after configuration.
Why wrong: The operation does not start automatically; it must be scheduled.
Quick Answer
The correct answer is that the operation must be scheduled using the 'ip sla schedule' command, as IP SLA ICMP echo operations are not active until explicitly started. This is because the ICMP echo operation measures round-trip time (RTT) by sending ICMP echo requests and waiting for replies, but it does not measure jitter—that requires a separate UDP jitter operation. On the Cisco CCNP ENARSI 300-410 exam, this distinction is frequently tested to ensure you understand that scheduling is mandatory and that jitter is not a feature of ICMP echo. A common trap is confusing ICMP echo with UDP jitter or assuming the operation runs automatically after configuration. Remember that the destination must be an IP address, not a hostname, unless DNS is configured, and you can set a frequency and timeout. Memory tip: “ICMP echo schedules the trip, not the jitter.”
300-410 IP SLA Practice Question
This 300-410 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 TWO statements about IP SLA ICMP echo operations are true? (Choose TWO.)
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
It measures round-trip time (RTT) between the source and destination.
IP SLA ICMP echo measures round-trip time (RTT) by sending ICMP echo requests and waiting for replies. It does not measure jitter (that requires UDP jitter operations). It can be configured with a frequency and a timeout, and the operation must be started with the 'ip sla schedule' command. The source IP can be specified, but the destination must be an IP address, not a hostname unless DNS resolution is configured.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
It measures round-trip time (RTT) between the source and destination.
- ✗
It measures jitter in the network path.
- ✓
The operation must be scheduled using the 'ip sla schedule' command.
Why this is correct
After configuring the operation, it must be scheduled to start and optionally repeat.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
The destination can be specified as a hostname without any additional configuration.
Why it's wrong here
The destination must be an IP address unless DNS is configured; hostnames are not automatically resolved.
- ✗
The operation runs continuously by default after configuration.
Why it's wrong here
The operation does not start automatically; it must be scheduled.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
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
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 300-410 NAT questions on configuration and troubleshooting.
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FAQ
Questions learners often ask
What does this 300-410 question test?
IP SLA — This question tests IP SLA — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: It measures round-trip time (RTT) between the source and destination. — IP SLA ICMP echo measures round-trip time (RTT) by sending ICMP echo requests and waiting for replies. It does not measure jitter (that requires UDP jitter operations). It can be configured with a frequency and a timeout, and the operation must be started with the 'ip sla schedule' command. The source IP can be specified, but the destination must be an IP address, not a hostname unless DNS resolution is configured.
What should I do if I get this 300-410 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 300-410 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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 →
Same concept, more angles
1 more ways this is tested on 300-410
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO commands are used to configure an IP SLA ICMP echo operation on a Cisco IOS device? (Choose TWO.)
easy- ✓ A.ip sla 1
- ✓ B.icmp-echo 192.168.1.1 source-ip 10.0.0.1
- C.ip sla schedule 1 life forever start-time now
- D.track 1 ip sla 1 reachability
- E.ip sla monitor 1
Why A: To configure an IP SLA ICMP echo operation, you start with 'ip sla <operation-number>' to enter IP SLA configuration mode, then use 'icmp-echo <destination> [source-ip <src>]' to define the probe. The 'frequency' command sets how often the probe is sent. The 'ip sla schedule' is used to start the operation, not to configure it. The 'track' command is used separately to monitor the operation. The 'ip sla monitor' is legacy.
Last reviewed: Jun 19, 2026
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