Linux+ V8 Diagnosing CPU and Memory Bottlenecks Quiz

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| By Thames
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Quizzes Created: 8865 | Total Attempts: 106,055
| Questions: 20 | Updated: Aug 13, 2026
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1. Which command shows memory usage broken down by cache, buffers, and free space?

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About This Quiz
Linux+ V8 Diagnosing CPU and Memory Bottlenecks Quiz - Quiz

This quiz evaluates your ability to diagnose and troubleshoot CPU and memory bottlenecks on Linux systems. You'll assess performance metrics, interpret system tools, and identify resource constraints affecting application performance. Essential for systems administrators and support professionals managing production environments.

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2. To diagnose which process is causing memory pressure, which tool combination is most effective?

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3. Context switching becomes a CPU bottleneck when which condition occurs?

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4. The 'htop' command provides advantages over 'top' such as which feature?

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5. High 'sy' (system) CPU usage suggests which issue?

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6. When 'MemFree' is low but 'MemAvailable' is high, what is likely happening?

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7. The 'perf' tool is primarily used for which type of profiling?

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8. In /proc/meminfo, what does 'MemAvailable' represent?

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9. What does the 'pmap' command display?

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10. High 'us' (user) CPU percentage typically means which processes are consuming CPU?

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11. Which command displays real-time CPU and memory usage per process on Linux?

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12. What does '%idle' near 0% in top/iostat indicate?

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13. The 'sar' command with -u flag reports what metric?

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14. In vmstat output, what does high 'si' (swap in) value suggest?

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15. Which tool is best for analyzing memory leaks in long-running processes?

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16. What does the 'RES' column show in top?

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17. A system load average of 4.0 on a single-core processor indicates what condition?

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18. Which file in /proc provides real-time CPU statistics?

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19. What does high 'wa' (wait) percentage in iostat indicate?

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20. In the top output, what does the 'VIRT' column represent?

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Which command shows memory usage broken down by cache, buffers, and...
To diagnose which process is causing memory pressure, which tool...
Context switching becomes a CPU bottleneck when which condition...
The 'htop' command provides advantages over 'top' such as which...
High 'sy' (system) CPU usage suggests which issue?
When 'MemFree' is low but 'MemAvailable' is high, what is likely...
The 'perf' tool is primarily used for which type of profiling?
In /proc/meminfo, what does 'MemAvailable' represent?
What does the 'pmap' command display?
High 'us' (user) CPU percentage typically means which processes are...
Which command displays real-time CPU and memory usage per process on...
What does '%idle' near 0% in top/iostat indicate?
The 'sar' command with -u flag reports what metric?
In vmstat output, what does high 'si' (swap in) value suggest?
Which tool is best for analyzing memory leaks in long-running...
What does the 'RES' column show in top?
A system load average of 4.0 on a single-core processor indicates what...
Which file in /proc provides real-time CPU statistics?
What does high 'wa' (wait) percentage in iostat indicate?
In the top output, what does the 'VIRT' column represent?
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