CompTIA Exam XK0-005 Topic 3 Question 21 Discussion

Actual exam question for CompTIA's XK0-005 exam

Question #: 21
Topic #: 3

A Linux administrator needs to rebuild a container with the httpd service in order to change some default parameters. Which of the following should be the first command line in the Dockerfile?

AFROM httpd

BBASE httpd

CUSE httpd

DINHERIT httpd

Show Suggested Answer

Suggested Answer: A, B

The following commands can help the user to authenticate and show the ticket grants using Kerberos SSO on a Linux server:

kinit: This command obtains and caches an initial ticket-granting ticket (TGT) for the user from the Kerberos key distribution center (KDC).The user needs to enter their password or use a keytab file to authenticate1.

klist: This command lists the cached tickets, including the TGT and any service tickets, for the user.It also shows the expiration time and flags for each ticket2.

For example, the user can run the following commands to log in and view their tickets:

$ kinit username@REALM

Password for username@REALM:

$ klist

Ticket cache: FILE:/tmp/krb5cc_1000

Default principal: username@REALM

Valid starting Expires Service principal

04/06/2023 16:06:59 04/07/2023 02:06:59 krbtgt/REALM@REALM

renew until 04/13/2023 16:06:59

kinit(1) - Linux man page, section ''Description''.

klist(1) - Linux man page, section ''Description''.

by Art at Dec 26, 2023, 08:32 PM

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Chi

25 days ago

I'm just wondering if the exam writer has ever actually used Docker before. These 'answer' options are a bit suspect, if you ask me.

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Adell

1 months ago

D) INHERIT httpd? What is this, object-oriented programming? Docker containers don't work that way, my friend.

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Merissa

8 days ago

B) BASE httpd

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Ellsworth

12 days ago

A) FROM httpd

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Jenise

1 months ago

C) USE httpd? Nah, that's not a valid Dockerfile command. Maybe the exam writer was trying to be clever, but this one is a no-brainer.

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Caitlin

30 days ago

A) FROM httpd

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Lilli

2 months ago

I'm not sure, but I think A) FROM httpd is the correct option because it specifies the base image for the container.

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Rebbecca

2 months ago

I agree with Billye, using FROM httpd makes sense to start building the container.

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Ruth

2 months ago

B) BASE httpd? Really? I've never heard of that command. Sounds made up to me.

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Emily

18 days ago

C) USE httpd

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Alyce

19 days ago

B) BASE httpd? Yeah, that doesn't sound right. It should be A) FROM httpd.

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Caren

25 days ago

A) FROM httpd

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Socorro

1 months ago

C) USE httpd

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Toshia

1 months ago

B) BASE httpd? Yeah, that doesn't sound right. I think it's A) FROM httpd

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Adelle

1 months ago

A) FROM httpd

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Billye

2 months ago

I think the first command should be A) FROM httpd.

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Man

2 months ago

The answer is clearly A) FROM httpd. That's the standard way to start a Dockerfile and specify the base image you want to use.

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Linwood

25 days ago

User4: Definitely, starting with FROM httpd is the way to go when rebuilding a container with the httpd service.

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Gaynell

26 days ago

User3: I agree, using FROM is the correct way to start building a container with a specific base image.

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Lemuel

30 days ago

User2: Yeah, that makes sense. It's the standard way to specify the base image in a Dockerfile.

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Cordelia

1 months ago

User1: I think the answer is A) FROM httpd.

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Brandee

2 months ago

I'm not sure, but I think A) FROM httpd makes sense because it specifies the base image for the container.

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Nguyet

2 months ago

I agree with Reena, using FROM is the correct way to specify the base image in a Dockerfile.

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Reena

2 months ago

I think the answer is A) FROM httpd.

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