CompTIA XK0-005 Exam - Topic 2 Question 32 Discussion

Actual exam question for CompTIA's XK0-005 exam

Question #: 32
Topic #: 2

An operations engineer is planning to start a container running a PostgreSQL database. The engineer wants the container to start automatically at system startup, mount the /home/db directory as /var/lib/postgresql inside the container, and expose port 5432 to the OS. Which of the following commands should the engineer run to achieve this task?

Adocker run -d --restart always -p 5432:5432 -v /home/db:/var/lib/postgresql postgresql:12

Bdocker run -d --restart -p 5432:5432 --volume /var/lib/postgresql:/home/db postgresql:12

Cdocker run -d --attach --platform 5432:5432 --volume /home/db:/var/lib/postgresql postgresql:12

Ddocker run -d --init --restart --publish 5432:5432 --workdir /home/db:/var/lib/postgresql postgresql:12

Show Suggested Answer

Suggested Answer: A

systemctl status httpd is the correct option to check if the Apache web server (httpd) is running. The systemctl status command provides detailed information about the service, including whether it is active and running.

by Gwenn at Jun 24, 2024, 01:10 PM

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Lorriane

3 months ago

I disagree with C. The flags don't match the requirements.

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Xuan

3 months ago

Wait, does PostgreSQL really need that specific volume path?

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Thaddeus

3 months ago

A is definitely the way to go.

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Erasmo

4 months ago

I think B is wrong. The volume paths are swapped!

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Oneida

4 months ago

Option A looks correct. It has the right flags.

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Malcom

4 months ago

I’m leaning towards option A since it seems to have all the right components, but I’m a bit confused about the volume paths in the other options.

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Ben

4 months ago

I practiced a similar question, and I feel like the `-p` flag is definitely for exposing ports, but I can't recall if the order of options matters.

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Elly

4 months ago

I think option A looks familiar because it has the correct volume mount, but I’m not completely sure about the syntax for the restart policy.

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Brynn

5 months ago

I remember something about using the `--restart` flag, but I’m not sure if it should be `always` or something else.

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Margret

5 months ago

I'm feeling pretty confident about this one. The first option looks like the correct command to meet all the requirements stated in the question.

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Brock

5 months ago

The question is asking about exposing a port, so I'll need to make sure I use the correct syntax for that as well. Let me review the options again carefully.

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Broderick

5 months ago

Hmm, I'm a bit unsure about the volume mapping. I'll need to double-check the correct syntax for mounting a host directory to a container path.

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Rana

5 months ago

This looks like a straightforward Docker container setup question. I'll carefully read through the options and think about the specific requirements mentioned.

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Sena

5 months ago

Okay, I think I've got this. The key is to use the --restart always flag to ensure the container starts automatically, and the -v flag to map the host directory to the container path.

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Katina

5 months ago

I'm not totally sure about consensus methods, but I think it has to do with getting agreement from multiple nodes on a network. I'll try to remember that and see if I can narrow it down from there.

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Malinda

5 months ago

I practiced a similar question last week, and I believe the perspectives include internal processes and financial performance. But I can't remember if "workforce learning" is right.

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Devora

9 months ago

Wait, is it just me or does option A sound like a recipe for a delicious PostgreSQL-infused docker stew?

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Julio

9 months ago

Option D is a bit of a mess. The --init, --restart, and --workdir flags don't seem to be used correctly in this context.

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Jolene

10 months ago

Option C doesn't look right. The --attach flag is likely for attaching to a running container, not starting a new one. And the --platform flag doesn't seem relevant here.

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Arlene

8 months ago

A) docker run -d --restart always -p 5432:5432 -v /home/db:/var/lib/postgresql postgresql:12

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Skye

8 months ago

Yeah, I agree. Option C doesn't seem right. The --attach flag doesn't fit the scenario.

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Clarinda

8 months ago

B) docker run -d --restart -p 5432:5432 --volume /var/lib/postgresql:/home/db postgresql:12

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Amie

8 months ago

A) docker run -d --restart always -p 5432:5432 -v /home/db:/var/lib/postgresql postgresql:12

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My

10 months ago

I'm not sure about option B. The --volume flag seems to have the directory order reversed compared to option A.

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Jonell

8 months ago

User 3: Thanks for pointing that out. I'll go with option A to ensure the directory mapping is correct.

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Carolynn

8 months ago

User 2: I agree. Option B seems to have the directory order reversed, which could cause issues.

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Tom

9 months ago

User 1: Option A looks correct. The -v flag should be used to specify the volume mapping.

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Eulah

10 months ago

Option A seems correct. The --restart always flag ensures the container starts automatically at system startup, and the -v flag mounts the /home/db directory to the container's /var/lib/postgresql directory.

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Arthur

8 months ago

User 4: Sounds good, let's go with option A then.

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Jovita

8 months ago

User 3: And the -v flag will mount the directory correctly.

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Rosio

9 months ago

User 2: Yes, the --restart always flag will make sure the container starts at system startup.

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Micah

9 months ago

User 3: Thanks for clarifying. I will use docker run -d --restart always -p 5432:5432 -v /home/db:/var/lib/postgresql postgresql:12 to start the PostgreSQL container.

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Aaron

9 months ago

User 2: Yes, that's right. Option A is the correct command to achieve the desired task.

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Dona

9 months ago

User 1: Option A seems correct. The --restart always flag ensures the container starts automatically at system startup, and the -v flag mounts the /home/db directory to the container's /var/lib/postgresql directory.

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