Drag a concept onto its matching description — or click a concept then click the description.
Used with a floating static route
Used to adjust HSRP priority
Used with policy-based routing
Drag and drop each IP SLA tracking object on the left to its application on the right.
Drag a concept onto its matching description — or click a concept then click the description.
Used with a floating static route
Used to adjust HSRP priority
Used with policy-based routing
Quick Answer
The correct answer is that the IP SLA tracking object is used to trigger event-based actions, such as adjusting a floating static route or modifying HSRP priority. This works because IP SLA generates continuous probes—like ICMP echo or HTTP requests—to monitor the reachability of a remote destination, and the tracking object ties the probe’s up/down state to a specific action. When the tracked object goes down, the associated application (e.g., a static route with a higher administrative distance or an HSRP priority decrement) is activated, enabling dynamic failover or path selection. On the ENCOR 350-401 exam, this concept often appears in drag-and-drop tasks where you must match tracking objects to their correct use cases, such as using a threshold-based track to trigger an event rather than simply reporting state. A common trap is confusing the track object itself (which monitors) with the action it triggers; remember that the tracking object is the trigger, not the result. Memory tip: think of IP SLA tracking as a “watchdog” that barks (triggers an event) when the path goes silent.
⚠ Common exam trap
Some candidates might mistakenly think that delay or threshold are valid IP SLA tracking objects, but only state and reachability are standard.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
track ip sla reachability: Used with a floating static route
IP SLA tracking uses only two standard object types: 'track ip sla <id> state' and 'track ip sla <id> reachability'. 'track ip sla <id> delay' and 'track ip sla <id> threshold' are not valid tracking objects. P1, P2, and P3 correctly map to their applications: reachability for floating static routes, state for adjusting HSRP priority, and reachability for policy-based routing. P4 and P5 are incorrect because the specified tracking objects do not exist.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
track ip sla reachability: Used with a floating static route
Why this is correct
Correct. 'track ip sla reachability' is used to monitor reachability for a floating static route.
track ip sla 1 state: Used to adjust HSRP priority
Why this is correct
Correct. 'track ip sla 1 state' is used to adjust HSRP priority based on the state of the IP SLA operation.
track ip sla 1 reachability: Used with policy-based routing
Why this is correct
Correct. 'track ip sla 1 reachability' is used with policy-based routing to influence traffic forwarding.
track ip sla 1 delay: Used to debounce state changes
Why it's wrong here
Incorrect. 'track ip sla 1 delay' is not a valid IP SLA tracking object. The valid objects are state and reachability.
track ip sla 1 threshold: Used to trigger event-based actions
Why it's wrong here
Incorrect. 'track ip sla 1 threshold' is not a valid IP SLA tracking object. It does not exist in Cisco IOS.
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Same concept, more angles
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 statements about IP SLA with object tracking are true? (Choose two.)
mediumWhy A: 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.
Variation 2. Drag and drop each IP SLA tracking object on the left to its application on the right.
mediumWhy P1: Static route uses tracking to install or remove a route; HSRP uses tracking to adjust priority; PBR uses tracking to change policy routing; VRRP uses tracking for priority; GLBP uses tracking for weighting.
Last reviewed: Jun 18, 2026
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