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Docker Exam DCA Topic 6 Question 95 Discussion

Actual exam question for Docker's Docker Certified Associate Exam exam
Question #: 95
Topic #: 6
[All Docker Certified Associate Exam 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
3 days 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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Phung
6 days ago
I agree with Rolland, having a backup copy is a good precaution.
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Rolland
7 days ago
But keeping a backup copy on another repository seems like a safe option.
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Joesph
11 days ago
No, I think there might be a better way to prevent overwriting.
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Theola
20 days 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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Alise
26 days 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
27 days 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
29 days 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
1 days ago
I agree, setting strict access controls would be a better solution.
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Cyndy
4 days ago
No
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Viola
6 days ago
No
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Georgene
17 days ago
Yes
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Olene
21 days ago
Yes
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Rolland
1 months ago
Yes, that sounds like a good way to prevent overwriting.
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