LPI Exam 305-300 Topic 2 Question 42 Discussion

Actual exam question for LPI's 305-300 exam

Question #: 42
Topic #: 2

In order to use the option dom0_mem to limit the amount of memory assigned to the Xen Domain-0, where must this option be specified?

AIn the bootloader configuration, when Xen is booted.

BIn any of Xen's global configuration files.

CIn its .config file, when the Domain-0 kernel is built.

DIn the configuration file /etc/xen/Domain-0.cfg, when Xen starts.

EIn its Makefile, when Xen is built.

Show Suggested Answer

Suggested Answer: A

by Elbert at Jul 09, 2025, 03:28 PM

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9 days ago

I agree with Elvera, it makes sense to set it during boot time to limit memory for Domain-0.

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10 days ago

I think the option dom0_mem should be specified in the bootloader configuration when Xen is booted.

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18 days ago

I'm going with B. Xen's global config files seem like the logical place to set this option.

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21 days ago

Definitely option A. That's where I would expect to find the option to limit the Domain-0 memory.

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