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Docker Exam DCA Topic 6 Question 95 Discussion

Actual exam question for Docker's DCA exam
Question #: 95
Topic #: 6
[All DCA Questions]

In Docker Trusted Registry, is this how a user can prevent an image, such as 'nginx:latest', from being overwritten by another user with push access to the repository?

Solution: Keep a backup copy of the image on another repository.

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Suggested Answer: B

: = Keeping a backup copy of the image on another repository is not how a user can prevent an image, such as 'nginx:latest', from being overwritten by another user with push access to the repository. This approach does not prevent the original image from being overwritten, it only provides a way to restore it from another source. However, this may not be reliable or efficient, as the backup repository may not be in sync with the original one, or may not be accessible at all times.To prevent an image from being overwritten by another user, the user can use the DTR web UI to make the tag immutable1. This feature allows the user to lock a specific tag, so that no one can push a new image with the same tag to the repository.This ensures that the image is always consistent and secure1.Reference:

Make a tag immutable | Docker Docs


by Shawna at Aug 22, 2024, 11:27 PM

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Dexter
4 months ago
Backup, schmackup. I'd just set the image to read-only and call it a day. Who needs backups when you've got super-secure permissions, am I right? *winks*
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Theresia
3 months ago
I agree, setting the image to read-only is a good idea for preventing overwriting.
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Ben
3 months ago
No
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Felix
3 months ago
Yes
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Phung
4 months ago
I agree with Rolland, having a backup copy is a good precaution.
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Rolland
4 months ago
But keeping a backup copy on another repository seems like a safe option.
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Joesph
4 months ago
No, I think there might be a better way to prevent overwriting.
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Theola
4 months ago
Holding a backup image on another repo? That's like keeping a spare tire in your garage and then driving on a flat. I'd just use a different image altogether, like 'apache:latest' or something.
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Yuette
4 months ago
User2
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Tamera
4 months ago
User1
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Alise
5 months ago
Hey, you know what they say: 'A backup a day keeps the data loss at bay!' Seriously, though, that's a good idea. Gotta protect those precious images, am I right?
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Sarah
5 months ago
Backup? Ain't nobody got time for that! I'd just push the image to a different tag, like 'nginx:v1' or something. Easy peasy!
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Wynell
5 months ago
I'm not sure if keeping a backup on another repository is the best solution. Wouldn't it be better to set strict access controls on the image to prevent overwriting?
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Keith
4 months ago
I agree, setting strict access controls would be a better solution.
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Cyndy
4 months ago
No
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Viola
4 months ago
No
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Georgene
4 months ago
Yes
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Olene
4 months ago
Yes
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Rolland
5 months ago
Yes, that sounds like a good way to prevent overwriting.
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