20+ practice questions focused on IP SLA — one of the most tested topics on the ENCOR 350-401 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start IP SLA PracticeA network engineer configures an IP SLA on a Cisco router to monitor reachability to a critical server at 10.1.1.1 using ICMP echo. The IP SLA is used as a track object for a static default route. After deployment, the engineer notices that the static route is never removed from the routing table, even when the server is unreachable. The IP SLA operation shows 'State: Active' and 'Latest RTT: NoConnection/Busy/Timeout'. What is the most likely cause?
Explanation: The IP SLA operation is not failing because the threshold has not been configured. Without a threshold, the operation never transitions to a 'down' state, so the track object never triggers the removal of the static route.
An engineer configures IP SLA 100 to monitor the jitter and latency of a VoIP call path between two branch routers. The configuration uses UDP jitter with a target of 192.168.2.2 on port 16384. The engineer notices that the IP SLA operation shows 'State: Active' but no jitter or latency statistics are collected. The router is generating the probe packets, but the remote router does not respond. What is the most likely reason?
Explanation: UDP jitter probes require a responder on the destination router to echo the packets back. Without the responder, the source router sends probes but receives no response, so no jitter statistics can be computed.
A network engineer configures IP SLA 1 to monitor HTTP server availability at 10.1.1.1 using HTTP GET. The operation is used as a track object for a backup static route. The engineer notices that the IP SLA operation shows 'State: Active' and 'Latest RTT: 200 ms', but the track object shows 'Track 1: up' even though the HTTP server returns a 404 error. What is the cause?
Explanation: By default, IP SLA HTTP operations consider a successful HTTP response (any status code) as a success. The operation does not fail on 404 unless a specific status code match is configured.
An engineer configures IP SLA 10 to monitor the reachability of a next-hop router at 10.1.1.1 using ICMP echo. The IP SLA is used as a track object for a static route. The engineer notices that the IP SLA operation shows 'State: Active' and 'Latest RTT: 1 ms', but the track object shows 'Track 10: up' even though the next-hop router is actually unreachable from the source. The source router has a default route pointing to 10.1.1.1. What is the most likely cause?
Explanation: If the source router has a default route pointing to the same next-hop, the IP SLA probe packets may be sent out using that default route, which could lead to the probe being sent to a different path or looping. However, the more direct cause is that the IP SLA probe is sourced from an interface that is not the one that would be used to reach the next-hop, so the probe may succeed even if the next-hop is unreachable via the expected path.
A network engineer configures IP SLA 20 to monitor the response time of a DNS server at 10.1.1.1 using DNS query for 'example.com'. The operation is used to influence routing decisions. The engineer notices that the IP SLA operation shows 'State: Active' and 'Latest RTT: 50 ms', but the DNS server is actually down and not responding to any queries. What is the most likely reason?
Explanation: The DNS probe may be receiving a response from a cache (either on the router itself or an intermediate DNS cache) rather than the actual DNS server. This can cause the probe to succeed even if the server is down.
+15 more IP SLA questions available
Practice all IP SLA questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of IP SLA. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
IP SLA questions on the 350-401 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. IP SLA is tested as part of the ENCOR 350-401 blueprint. Practicing with targeted IP SLA questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free 350-401 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but IP SLA is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
Launch a full IP SLA practice session with instant scoring and detailed explanations.
Start IP SLA Practice →