CH16

Question 1

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

Answer 1

System Accounts, such as Server processes.

Question 2

The groupmod command can be used to change a group name?

True
False

Answer 2

True

Question 3

The groupmod command can be used to change a group GID?

True
False

Answer 3

True

Question 4

Which of the following files does groupadd command use to determine the new GID when a GID isn’t specified?

/etc/user
/etc/shadow
/etc/passwd
/etc/group

Answer 4

/etc/group

Question 5

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 -a extra jane
usermod -ag jane extra
usermod -aG extra jane
usermod -G extra jane

Answer 5

usermod -aG extra jane

Question 6

Which option for the usermod command can be used to specify a user’s primary group ID?

• g
• S
• G
• s

Answer 6

-g

Question 7

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.

Answer 7

…automatically delete a user and the user’s home directory and mail spool and their contents.

Question 8

The groupdel command can be used to delete primary groups?

True
False

Answer 8

False

Question 9

Which of the following commands can be used to modify a user?

adduser
moduser
useradd
usermod

Answer 9

usermod

Question 10

Which command allows you to view or change some of the default values used by useradd command?

useradd -D
useradd -r
modvalue
useradd -f

Answer 10

useradd -D