LINUX

Question 1

Which of the following commands can be used to read the manual for your applications?

< command > help
help < command >
? < command >
man < command >

Answer 1

man < command >

Question 2

Which of the following commands is NOT used in the management of files and directories?

ping
mkdir
touch
chmod

Answer 2

ping

Question 3

Which of the following files contains hashes of user passwords on most modern Linux distributions?

/etc/passwd
/etc/sshd_config
/etc/shells
/etc/shadow

Answer 3

/etc/shadow

Question 4

What is the UID of the root user?
0
100
1
10

Answer 4

0

Question 5

What would the permissions be after running the command “chmod 754 file”?

• r-xr-xr–
• rwxr-xr–
• rwxrwxrw-
• rwxr–r–

Answer 5

-rwxr-xr–

Question 6

Which command will set the permission of a file to read only for all users?

chmod 111
chmod 222
chmod 777
chmod 444

Answer 6

chmod 444

Question 7

Which of the following commands is used to install software from an online repository?

install
yum install
rpm install
installrpm

Answer 7

yum install

Question 8

Which of the following commands is used to query the RPM database to determine if a package (such as tcpdump) is installed?

yum find tcpdump
rpm tcpdump
yum search tcpdump
rpm -qa | grep tcpdump

Answer 8

rpm -qa | grep tcpdump

Question 9

Which of the following commands is used to install software updates?

rpm update
update
yum update
installupdate

Answer 9

yum update

Question 10

Which of the following commands is used to update all installed RPM packages EXCEPT for httpd?

yum update –exclude httpd
yum dont-update httpd
yum update –without-httpd
yum update -httpd

Answer 10

yum update -httpd