Last Updated on May 16, 2019 by Admin
NDG Linux Essentials 2.0 Chapter 16 Exam Answers
-
UIDs 1-499 are usually reserved for what kind of users?
- Remote log-in accounts
- Are not used for user accounts, but for group 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 user owner.
- …will have no UID owner.
- …will show a UID as the owner, but not user name.
- …are deleted as well.
-
Which of the following options for the
useradd
command allows root to specify the UID to be associated with the account?- -g
- -G
- -u
- -M
-
Which of the following options for the
useradd
command allows root to specify supplementary groups the user will be a member of?- -G
- -u
- -g
- -U
-
On a system that does not use UPG, the
useradd
command will also create a user group. For example, userbob
, groupbob
.True or False?
- True
- False
-
Which of the following commands will add the group
extra
to the userbob
‘s secondary groups in addition tobob
‘s current secondary groups?- usermod -G extra bob
- usermod -ag bob extra
- usermod -aG extra bob
- usermod -a extra bob
-
Which option for the
usermod
command can be used to specify a user’s group ID (either primary or secondary)?(choose two)
- -s
- -g
- -S
- -G
-
For non-root users, the
passwd
command can only be used to change the password of the user running the command.True or False?
- True
- False
-
The
groupmod
command can be used to change a group name.True or False?
- True
- False
-
The
groupmod
command can be used to change a group GID.True or False?
- True
- False
-
The
groupmod
command can be used to add users to a group.True or False?
- True
- False
-
Which of the following commands can be used to modify a group?
- groupmod
- groupadd
- modgroup
- addgroup
-
Which command can be used to determine a user’s most recent log in?
- history
- last
- login
- shell
-
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/group
- /etc/passwd
- /etc/usr
- /etc/shadow
-
Which of the following files does the
groupadd
command use to determine the new GID when a GID isn’t specified?- /etc/usr
- /etc/shadow
- /etc/passwd
- /etc/group
-
Which of the following commands, run as root, will prevent the user
bob
from logging in?- usermod -L bob
- usermod -l bob
- usermod -D bob
- usermod -d bob
-
What directory contains a user’s home directory?
- /user
- /
- /home
- /rootfs
-
GIDs under 500 (or 1000) are usually reserved for what kind of groups?
- System use
- Are not used for groups, but for user accounts
- Administrators
- User private groups (UPG)
-
If a user is deleted, the files and directories that the user owned…
- …are deleted as well.
- …will have no user owner.
- …may be important for others in the organization
- …will have no UID owner.
-
Which of the following options for the
useradd
command allows you to use a different primary group then the default?- -g
- -G
- -U
- -u
-
On a system that uses UPG, the UID must not be the same as the GID..
True or False?
- True
- False
-
The
usermod
command can be used to unlock a users account with the following option.- -s
- -u
- -f
- -U
-
Which of the following options for the
useradd
command allows you to use a different login shell than the default?- -g
- -s
- -u
- -U
-
Which of the following commands will add the group
extra
to the userjane
’s secondary groups in addition tojane
‘s current secondary groups?- usermod -a extra jane
- usermod -ag jane extra
- usermod -aG extra jane
- usermod -G extra jane
-
Which option for the
usermod
command can be used to specify a user’s primary group ID?- -g
- -S
- -G
- -s
-
For root users, the
passwd
command can only be used to change the password of the user running the command.True or False?
- True
- False
-
The
userdel -r
command will…- …will prompt before deleting each file owned by a user.
- …delete the user account, but leave the user’s files by default.
- …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.
-
The
groupmod
command can be used to change a group name.True or False?
- True
- False
-
The
groupmod
command cannot be used to change a group GID.True or False?
- True
- Fasle
-
The
groupdel
command can be used to delete primary groups.True or False?
- True
- Fasle
-
Which of the following commands can be used to modify a user?
- adduser
- moduser
- useradd
- usermod
-
Which command can be used to determine a user’s most recent log in?
- history
- shell
- login
- last
-
The /etc/passwd file contains encrypted user password information. True or False?
True or False?
- False
- True
-
Which of the following files contains group IDs?
- /etc/passwd
- /etc/usr
- /etc/shadow
- /etc/group
-
Which command allows you to view or change some of the default values used by the
useradd
command?- useradd -D
- useradd -r
- modvalue
- useradd -f
-
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