» Linux » Examen sur Linux » Examen 202 : Networking Administration » Section 5 » Question 7/27
7.You changed the GID of the sales group by editing the /etc/group file. All of the members can change to the group without any problem except Joe. He cannot even login to the system. What is the problem?

Joe forgot his password for the group.
You need to add Joe to the group again.
Joe had the original GID specified as his default group in the /etc/passwd file.
You need to delete Joe’s account and recreate it.

Explanation: Every user account has an entry in the /etc/passwd file. The third field of each entry is the user’s primary group identifier (GID). This number must be the number of an existing group otherwise the user will not be able to log on. In this question, you have changed the GID number of the group, so therefore the GID entry for Joe is invalid.

Reference: http://www.unet.univie.ac.at/aix/files/aixfiles/passwd_etc.htm

Incorrect Answers
A: You log on with the user account password, not the group account password.
B: You don’t need to re-add the users to a group if you change the group ID.
D: It is unnecessary to delete and recreate Joe’s account.
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