Question 349 of 2,152

IP SLA →hardMultiple ChoiceObjective-mapped

Quick Answer

The answer is that the tracked object delay of 5 seconds for down transition causes a 5-second wait before the static route is removed. This is because the IP SLA tracking delay configuration introduces a deliberate hold time before the tracked object changes its state from up to down, even after the IP SLA operation itself has failed due to the timeout or threshold being exceeded. On the Cisco CCNP ENARSI 300-410 exam, this concept tests your understanding of how IP SLA tracking interacts with static route removal, specifically that the delay is designed to prevent route flapping but can mislead engineers into thinking the tracking is broken. A common trap is confusing the IP SLA operation’s timeout (5000 ms) with the tracked object’s delay (5 seconds); the timeout governs how long the router waits for a reply, while the delay governs how long the router waits to act on a state change. Memory tip: think of the delay as a “debounce timer” — it filters out brief failures to keep the route stable, but it also means the route will linger for exactly that delay period after a real failure.

300-410 IP SLA Practice Question

This 300-410 practice question tests your understanding of ip sla. 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.

A network engineer configures IP SLA tracking for a static route on a Cisco router. The IP SLA operation is configured with a threshold of 100 ms and a timeout of 5000 ms. The tracked object is configured with a delay of 5 seconds for both up and down transitions. The engineer notices that when the remote host becomes unreachable, the static route is not removed from the routing table immediately. Which is the most likely explanation?

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.
Clue: "immediately / without restart"
Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.

Question 1hardmultiple choice

Read the full NAT/PAT explanation →

A
The IP SLA operation is still in the 'pending' state and has not yet timed out.
Why wrong: The timeout of 5000 ms is much longer than the delay; the operation would have timed out before the delay expires.
B
The tracked object delay of 5 seconds for down transition causes a 5-second wait before the route is removed.
The delay down command in the tracked object introduces a hold-down period before the object state changes, so the route remains for that duration.
C
The static route has a higher administrative distance than the IP SLA tracked route, so it remains preferred.
Why wrong: The tracked static route is the same route; the tracking only removes it if the object goes down.
D
The IP SLA operation is configured with a frequency that is too low, causing a delay in detection.
Why wrong: Frequency affects how often probes are sent, but the delay is separate from frequency.

Full breakdown with real-world context →

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 tracked object delay of 5 seconds for down transition causes a 5-second wait before the route is removed.

The IP SLA tracking delay configuration introduces a delay before the tracked object changes state; this is designed to prevent route flapping but can cause the static route to remain in the routing table for the configured delay period after the IP SLA operation fails.

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.

✗
The IP SLA operation is still in the 'pending' state and has not yet timed out.
Why it's wrong here
The timeout of 5000 ms is much longer than the delay; the operation would have timed out before the delay expires.
✓
The tracked object delay of 5 seconds for down transition causes a 5-second wait before the route is removed.
Why this is correct
The delay down command in the tracked object introduces a hold-down period before the object state changes, so the route remains for that duration.
Clue confirmation
The clue words "most likely", "immediately / without restart" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
The static route has a higher administrative distance than the IP SLA tracked route, so it remains preferred.
Why it's wrong here
The tracked static route is the same route; the tracking only removes it if the object goes down.
✗
The IP SLA operation is configured with a frequency that is too low, causing a delay in detection.
Why it's wrong here
Frequency affects how often probes are sent, but the delay is separate from frequency.

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: The tracked object delay of 5 seconds for down transition causes a 5-second wait before the route is removed. — The IP SLA tracking delay configuration introduces a delay before the tracked object changes state; this is designed to prevent route flapping but can cause the static route to remain in the routing table for the configured delay period after the IP SLA operation fails.

What should I do if I get this 300-410 question wrong?

Are there clue words in this question I should notice?

Yes — watch for: "most likely", "immediately / without restart". 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?

Static NAT maps one inside address to one outside address.

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