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LPI 101-500 Exam - Topic 7 Question 14 Discussion

When is the content of the kernel ring buffer reset? (Choose two.)
A) When the ring buffer is explicitly reset using the command dmesg --clear and E) When the system is shut down or rebooted
B) When the ring buffer is read using dmesg without any additional parameters
C) When a configurable amount of time, 15 minutes by default, has passed
D) When the kernel loads a previously unloaded kernel module

LPI 101-500 Exam - Topic 7 Question 14 Discussion

Actual exam question for LPI's 101-500 exam
Question #: 14
Topic #: 7
[All 101-500 Questions]

When is the content of the kernel ring buffer reset? (Choose two.)

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Suggested Answer: A, E

by Aliza at May 04, 2022, 04:04 PM

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Cheryl
10 months ago
Yeah, and it clears on module unload too!
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Luke
10 months ago
Wait, does it really reset every 15 minutes? That seems odd.
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Linn
10 months ago
I thought it also resets on reboot?
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Nina
10 months ago
Totally agree, that's a key command!
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Freida
11 months ago
It's reset when you use dmesg --clear.
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Delfina
11 months ago
I practiced a question similar to this, and I think reading dmesg without parameters doesn't reset the buffer, so I’m leaning towards B being incorrect.
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An
11 months ago
I'm not entirely sure, but I think the ring buffer might reset when the system reboots, which could be option E.
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Adolph
11 months ago
I remember that the ring buffer gets cleared when you use the dmesg --clear command, so I think option A is definitely one of the answers.
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Danica
11 months ago
I vaguely recall something about kernel modules affecting the ring buffer, but I can't remember if that was option D or not.
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Gilma
11 months ago
I'd eliminate the first and last options right away, since they mention modem authentication which doesn't seem relevant to the core functionality of AD DS. Then I'd focus on comparing computer accounts and mobile devices.
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Stephaine
11 months ago
Hmm, this looks like a tricky one. I'll need to carefully analyze the logging configuration and the code segment to determine the expected output.
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Arlene
11 months ago
I could be wrong, but I feel like bills of material aren't directly used in CRP. It seems more like a production planning thing than a capacity input.
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