Most commands on Linux can display information on their usage. How can this information typically be displayed? Select two.

• By running the command info ls

• By running the command with the option /? or /??

• By running the command with the option -h or --help

• By running the command with the option /doc or /documentation

• By running the command with the option -m or --manpage

What command lists running processes?

• pwd

• ps

• top

• uname

• uptime

What is the purpose of the kernel?

• Boots the system

• Implements the command line terminal

• Manages system resources

• Acts as the command interpreter

What does the command last output? Select two.

• Root tty4 Thurs Aug 19 22:12 -22:12 (00:00)

• Shows last command used by defined user

• Last login: Mon Aug 19 10:57:29

• Shows previous commands

What command would root use to change the ownership of a file?

• chmod

• chage

• chusr

• chown

What is the login for the system administrator?

• root

• admin

• administrator

• suzie

The superuser account is root. Root always has UID of what?

• 1

• -1

• -255

• 9994

• 0

What basic information is stored in /etc/passwd? Select three.

• UID

• username

• user's default shell

• password

User passwords are stored in etc/shadow. What else is true regarding Linux passwords?

• Passwords are only stored in hashed form for security.

• Can only be 6 characters long

• Users cannot change original passwords

What command displays manual pages?

• man

• help

• info

• manual