Continue your lesson
Follow traffic from the endpoint through each device, protocol, and service in the path.
Block 1 of 1Compare Recovery point objective · Recovery time objective · Mean time to repair · Mean time between failures
Current · 15 min
Compare Recovery point objective · Recovery time objective · Mean time to repair · Mean time between failures
Optional concept notes
Recovery point objective
Defines acceptable data loss measured backward from an outage.
Recovery time objective
Defines the target time to restore a disrupted service.
Mean time to repair
Averages the time needed to restore a failed component.
Mean time between failures
Estimates average operating time between repairable component failures.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
Your lesson stays open here while the provider opens in another tab. Choose one source; the notes above are optional.
Practice the reasoning here
Sketch a small network or packet path. Predict the expected state, introduce one fault, and identify the observation that isolates it.
- State the expected result before changing or testing anything.
- Name the observation, command, log, or report that would confirm it.
- Explain why the closest alternative does not fit the same requirement.
Check the whole objective
This unlocks objective 3.3 for recall. The latest checkpoint needs 70% or higher; a lower result puts the lesson back near the front of your timeline.