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Creating Users and Groups M16 Exam
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UIDs 1-499 are usually reserved for what kind of users?
- Are not used for user accounts, but for group accounts
- Remote log-in accounts
- System accounts, such as server processes
- Log-in (human) users
-
If a user is deleted, the files and directories that the user owned…
- …will have no UID owner.
- …will have no user owner.
- …will show a UID as the owner, but not user name.
- …are deleted as well.
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Which of the following options for the useradd
command allows root to specify the UID to be associated with the account?
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Which of the following options for the useradd
command allows root to specify supplementary groups the user will be a member of?
-
On a system that does not use UPG, the useradd
command will also create a user group. For example, user bob, group bob.True or False?
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Which of the following commands will add the group extra
to the user bob’s secondary groups in addition to bob
‘s current secondary groups?
usermod -ag bob extra
usermod -aG extra bob
usermod -G extra bob
usermod -a extra bob
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Which option for the usermod
command can be used to specify a user’s group ID (either primary or secondary)?(choose two)
-
For non-root users, the passwd
command can only be used to change the password of the user running the command. True or False?
-
The groupmod
command can be used to change a group name. True or False?
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The groupmod
command can be used to change a group GID. True or False?
-
The groupmod
command can be used to add users to a group. True or False?
-
Which of the following commands can be used to modify a group?
addgroup
groupmod
groupadd
modgroup
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Which command can be used to determine a user’s most recent log in?
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Which of the following files contains encrypted user password information?
- /etc/usr
- /etc/group
- /etc/passwd
- /etc/shadow
-
Which of the following files contains user IDs?
- /etc/passwd
- /etc/usr
- /etc/shadow
- /etc/group
-
Which of the following files does the groupadd
command use to determine the new GID when a GID isn’t specified?
- /etc/usr
- /etc/group
- /etc/shadow
- /etc/passwd
-
Which of the following commands, run as root, will prevent the user bob
from logging in?
usermod -D bob
usermod -l bob
usermod -d bob
usermod -L bob
-
What directory contains a user’s home directory?
-
GIDs under 500 (or 1000) are usually reserved for what kind of groups?
- Administrators
- System use
- User private groups (UPG)
- Are not used for groups, but for user accounts
-
If a user is deleted, the files and directories that the user owned…
- …will have no UID owner.
- …will have no user owner.
- …are deleted as well.
- …may be important for others in the organization
-
Which of the following options for the useradd
command allows you to use a different primary group then the default?
-
On a system that uses UPG, the UID must not be the same as the GID.. True or False?
-
The usermod
command can be used to unlock a users account with the following option.
-
Which of the following options for the useradd
command allows you to use a different login shell than the default?
-
Which of the following commands will add the group extra
to the user jane’
s secondary groups in addition to jane’s current secondary groups?
usermod -G extra jane
usermod -ag jane extra
usermod -a extra jane
usermod -aG extra jane
-
Which option for the usermod
command can be used to specify a user’s primary group ID?
-
For root users, the passwd
command can only be used to change the password of the user running the command. True or False?
-
The userdel -r
command will…
- …delete the user account, but leave the user’s files by default.
- …will prompt before deleting each file owned by a user.
- …automatically delete a user and the user’s home directory and mail spool and their contents.
- …automatically delete a user and all the files owned by that user.
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The groupmod
command can be used to change a group name. True or False?
-
The groupmod
command cannot be used to change a group GID. True or False?
-
The groupdel
command can be used to delete primary groups. True or False?
-
Which of the following commands can be used to modify a user?
usermod
adduser
useradd
moduser
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Which command can be used to determine a user’s most recent log in?
-
The /etc/passwd file contains encrypted user password information. True or False? True or False?
-
Which of the following files contains group IDs?
- /etc/group
- /etc/shadow
- /etc/passwd
- /etc/usr
-
Which command allows you to view or change some of the default values used by the useradd
command?
useradd -D
modvalue
useradd -f
useradd -r
-
Which of the following commands, run as root, will prevent the user jane
from logging in?
usermod -d jane
usermod -D jane
usermod -L jane
usermod -l jane