Last Updated on October 17, 2019 by Admin
NDG Linux Essentials 2.0 Chapter 15 Exam Answers
-
Which files contain user account information?
(choose two)- /etc/shadow
- /etc/group
- /etc/passwords
- /etc/passwd
-
Which user can view the
/etc/shadow
file?- Any member of the password group
- No users
- The root user
- All users
-
Which command will display the UID, GID and groups your current user belongs to?
- whoami
- Who
- id
- about
-
Each user belongs to at least one group.
True or False?
- True
- False
-
Which command will display the users that are currently logged in to the system?
- about
- who
- id
- whoami
-
The
sudo
command allows regular users to…- …execute commands as another user.
- …execute any command as root, after providing the root password.
- …run any command as root, after providing the sudo password.
- …run any commands as a system account without logging in.
-
Which of the following commands will display the group(s) a user belongs to?
- all
- id
- whoami
- group
-
Which of the following commands will display the groups that the user bob belongs to?
- group bob
- id bob
- groups -a
- all bob
-
The
/etc/group
file follows what structure?- group:GID:user_list
- groups -a
- user:group
- group_name:password_placehoder:GID:user_list
-
A GID is associated with a group name.
True or False?
- True
- False
-
A user can belong to…
- At least 16 groups
- Only five groups
- Only groups with a GID over 500
- Only one group
-
Sudo privileges can be used to specify which user can use the
sudo
command to execute commands as other users.True or False?
- True
- False
-
In distributions that do not allow the root user to login directly or via the
su
command, the installation process automatically configures one user account to be able to use thesudo
command to execute commands as if they were executed by the root user.True or False?
- True
- False
-
Which of the following commands will display how long the system has been running since the last boot?
(choose two)
- who
- id
- uptime
- w
-
The
/etc/shadow
file contains plain-text passwords.True or False?
- True
- False
-
Which command can be used to view the
/etc/passwd
file entries?- uptime
- uppasswd
- getpasswd
- getent
-
All Linux systems allow administrators to log in as root.
True or False?
- True
- False
-
What is the default user for the
su
command?- All users
- The root user
- Any member of the password group
- The most recently created user
-
Which command would allow a user to execute commands as root?
- whoami
- about
- sudo
- who
- grep
-
File permissions cannot be edited by the root user.
True or False?
- True
- False
-
Which command is used to display only the user’s primary group?
- who
- id -g
- man
- whoami
- about
-
Traditional UNIX systems allowed users to belong to how many groups?
- 10,000
- 1
- 65,000
- 256
- 16
-
What would an account with the UID 376 typically be used for?
- White hat hackers.
- Temporary employees.
- New users with full privileges.
- System service access.
- Root user access.
-
Usernames cannot be the same as group names.
True or False?
- True
- False
-
To display the group(s) a user belongs to use this command:
- all
- id
- grep
- group
- whoami
-
Which command will display the groups that the root user belongs to?
- all -t
- groups -a
- id root
- all
- group -r
-
A value of 0 in the “minimum” password aging field means the user cannot change their password.
True or False?
- True
- False
-
The “Epoch” began on January 1, 1970.
True or False?
- True
- False
-
The
last
command displays reboot records…- By default
- Never
- Only when issued by the root user
- After restarting the system
- When issued with the -p switch
-
Sudo privileges allow users to execute commands as another user.
True or False?
- True
- False
-
When using the
sudo
command to execute a command as theroot
user, the command prompts for the user’s own password, not that of the root user.True or False?
- True
- False
-
The first line of this command displays how long the system has been running since being rebooted.
- su
- getent
- w
- id
- who
-
The
/etc/shadow
file contains encrypted passwords.True or False?
- True
- False
-
Which command can be used to view the /var/log/wtmp file entries?
- getent
- uptime
- getpasswd
- uppasswd
- last