Continue your lesson
Connect the command you run to the file, process, service, permission, or kernel state it changes.
Block 1 of 2Compare Load average · I/O wait · Swap pressure
Current · 11 min
Compare Load average · I/O wait · Swap pressure
Optional concept notes
Load average
Estimates runnable or uninterruptible work over recent time windows.
I/O wait
Shows CPU idle time while I/O is outstanding; interpret cautiously on multicore systems.
Swap pressure
Moves memory pages to disk when physical memory is constrained.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
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Block 2 of 2Understand Thermal throttling
8 min
Understand Thermal throttling
Optional concept notes
Thermal throttling
Reduces processor speed because hardware temperature exceeds safe thresholds.
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
Use a disposable Linux system. Predict a command's effect, run it, inspect exit status and logs, then restore the starting state.
- 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 5.5 for recall. The latest checkpoint needs 70% or higher; a lower result puts the lesson back near the front of your timeline.