- A
A tracking object can monitor the state of an IP SLA operation and change state when the operation fails.
Correct because the tracking object uses the IP SLA operation's success/failure to determine its own state (up/down).
- B
The 'track' command is used to create a tracking object that references an IP SLA operation by its operation number.
Correct because the syntax is 'track object-id ip sla operation-number state' or similar, linking the tracker to the IP SLA probe.
- C
Object tracking can only be used with static routes, not with dynamic routing protocols like EIGRP or OSPF.
Why wrong: Incorrect because object tracking can be used with dynamic routing protocols via route policy or conditional advertisement, though static routes are the most common use.
- D
The tracking object automatically modifies the routing table when the IP SLA operation fails.
Why wrong: Incorrect because the tracking object only provides state information; the routing change must be configured separately (e.g., using a floating static route with the track option).
- E
An IP SLA operation can be configured after the tracking object that references it.
Why wrong: Incorrect because the tracking object requires the IP SLA operation to exist first; otherwise, the tracker will be in an error state.
350-401 IP SLA Practice Question
This 350-401 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.
Which two statements about IP SLA with object tracking 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
A tracking object can monitor the state of an IP SLA operation and change state when the operation fails.
Object tracking allows IP SLA operations to influence routing decisions. The 'track' command is used to create a tracking object that monitors the state of an IP SLA operation. When the IP SLA operation fails, the tracked object changes state, which can then be used to adjust routing, such as floating static routes. The tracking object can be referenced by multiple routing protocols or static routes. The tracking object does not directly modify the routing table; it provides a state that other features use. The IP SLA operation must be configured before the tracking object can reference it.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A tracking object can monitor the state of an IP SLA operation and change state when the operation fails.
Why this is correct
Correct because the tracking object uses the IP SLA operation's success/failure to determine its own state (up/down).
Related concept
OSPF neighbours must agree on key parameters.
- ✓
The 'track' command is used to create a tracking object that references an IP SLA operation by its operation number.
Why this is correct
Correct because the syntax is 'track object-id ip sla operation-number state' or similar, linking the tracker to the IP SLA probe.
Related concept
OSPF neighbours must agree on key parameters.
- ✗
Object tracking can only be used with static routes, not with dynamic routing protocols like EIGRP or OSPF.
Why it's wrong here
Incorrect because object tracking can be used with dynamic routing protocols via route policy or conditional advertisement, though static routes are the most common use.
- ✗
The tracking object automatically modifies the routing table when the IP SLA operation fails.
Why it's wrong here
Incorrect because the tracking object only provides state information; the routing change must be configured separately (e.g., using a floating static route with the track option).
- ✗
An IP SLA operation can be configured after the tracking object that references it.
Why it's wrong here
Incorrect because the tracking object requires the IP SLA operation to exist first; otherwise, the tracker will be in an error state.
Common exam traps
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Detailed technical explanation
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
- OSPF neighbours must agree on key parameters.
- Router ID selection can affect neighbour relationships and LSDB output.
- OSPF cost influences the preferred path.
- A route can appear in OSPF information but not become the installed route.
TExam Day Tips
- Check area mismatch first when OSPF adjacency fails.
- Review passive interfaces when a network is advertised but no neighbour forms.
- Use show ip ospf neighbor and show ip route clues carefully.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
What to study next
Got this wrong? Here's your next step.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 350-401 OSPF questions on adjacency and route selection.
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FAQ
Questions learners often ask
What does this 350-401 question test?
IP SLA — This question tests IP SLA — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: A tracking object can monitor the state of an IP SLA operation and change state when the operation fails. — Object tracking allows IP SLA operations to influence routing decisions. The 'track' command is used to create a tracking object that monitors the state of an IP SLA operation. When the IP SLA operation fails, the tracked object changes state, which can then be used to adjust routing, such as floating static routes. The tracking object can be referenced by multiple routing protocols or static routes. The tracking object does not directly modify the routing table; it provides a state that other features use. The IP SLA operation must be configured before the tracking object can reference it.
What should I do if I get this 350-401 question wrong?
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 350-401 OSPF questions on adjacency and route selection.
What is the key concept behind this question?
OSPF neighbours must agree on key parameters.
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Last reviewed: Jun 18, 2026
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