Exam XK0-004 topic 1 question 119 discussion

A member of the production group tries to write to a file, but can't. So... just chmod g+w on the file. B and D are false, the file is already owned by the production group, that group just needs write permissions. C is false. The permissions of the directory doesn't have write access for the group either, so chmod +S will not help.

A is correct

I hate this question, but I hate all the wrong answers as well. To show you how garbage this question and all the answers are do this in your CLI. $ mkdir production_docs $ mkdir ./production_docs/production $ touch ./production_docs/days $ sudo groupadd production $ sudo useradd Production $ sudo usermod Production -G production $ sudo chown Production:production ./production_docs/days $ sudo chown root:production production_docs $ sudo chown root:production ./production_docs/production $ cd production_docs $ chmod go-x production $ sudo usermod <yourUSERname> -G production $ newgrp production $ echo "blah" > days zsh: permission denied: days Now you are free to test the answers CompTIA says should solve the issue... they all fail. The correct answer would be (with root permission) chmod g+w days. Anyway thats my 2 pennies...

Horrible question and admin, having a USER and GROUP being named production, as well as not being consistent with _docs. No wonder this question is here and not on the test lol. This is what we have: A: Adds the group write permission to the directory. B: Changes group ownership of file days to root. C: Adds sticky bit to production directory. D: Change the user ownership of the directory to production. Ok, so B and C we can eliminate. B-if we change group ownership to root, no one can get the file & C-a sticky bit is for special user permissions to prevent others from deleting files. In order to even list the directory contents, the group member needs group x (execute) permissions on the production_days folder. You would think that A would help, but without the x permission, adding the write permission doesn't help, so A is not our answer. Changing the user ownership to production doesn't help either because we need GROUP permissions changed. So NO ANSWER is actually correct. IF answer A is changed to chmod g+wx production_days, I think we would get there.

D is not correct. The uses is a member of the "production group", but is not the "production" user. So even if "D" allows to make modification into the directory, it still don't allow to overwrite the file, because the only user allowed to overwrite the file is user "production", but not the rest of the members of the "production" group.

Can somebody explain?

A the uses in the product group have no write right.