Linux Administration

Instructions:

• Answer 50 questions in 15 minutes.
• If you are not ready to take this test, you can study here.
• Match each statement with the correct term.
• Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Telnet
w
ifdown
/proc
23


2. Creates a directory
ifconfig -a
mkdir
kill
tail


3. Displays user information
/opt
finger
apropos
chgrp


4. Query internet name servers interactively
date
nslookup
wget
passwd


5. Root directory of file system (not the user root's home dir)
'/'


6. SQL
apropos
156
161
21


7. SMTP
ping
25
179
cat > {filename}


8. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
/media
ping
netstat
nslookup


9. Variable files—files whose content is expected to continually change during normal operation of the system—such as logs & spool files & and temporary e-mail files.
sudo
top
/var
service


10. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
20
pico {filename}
/proc
mail


11. Prints contains of text file
/etc
118
pico {filename}
cat


12. Displays all current running processes (similar to task manager)
top
20
/root
more {filename}


13. Find regular expression in file.


14. Ftp Control
head
/dev
rm
21


15. Mount points for removable media such as CD-ROMs
/media
rmdir
usermod
/dev


16. Displays kernel routing tables
netstat -r
history
ifdown
/lib


17. Changes password for a user
22
/root
passwd
mkdir


18. Removes a directory
/dev
rmdir
/etc
more {filename}


19. Shows who is currently logged in and where
w
80
cd
cal


20. Estimate file space usage
fg
cp
du
top


21. Prints current working directory
dig-x
uptime
pwd
wget


22. Shows command history
curl
history
/opt
118


23. Lists all stopped/paused background. Resumes a stopped job
23
bg
110
118


24. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
netstat -r
/bin
chown
/home


25. Changes directories
cd
/opt
page {filename}
rmdir


26. Displays manual or help document for a command/application
date
man
ifconfig -a
/var/log


27. WHOIS
/mnt
156
43
df


28. SSH
cal
cp
161
22


29. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
/boot
/dev
/lib
20


30. Changes group ownership of file or directory
dig
killall
chgrp
cp


31. Displays the connection media state and capabilities
/bin
/sbin
143
ethtool


32. Secondary hierarchy for read-only user data
/usr
nslookup
curl
grep


33. Brings an interface up
ifup
rmdir
cd
25


34. Log files
/var/log
nslookup
du -a
top


35. DNS
date
page {filename}
53
rm


36. Displays the status of a service or all services
pwd
rmdir
du
service


37. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
/proc
/usr
21
apropos


38. Libraries essential for the binaries in /bin/ and /sbin/
80
mkdir
/lib
cp


39. Displays Kernel information
143
dig-x
443
uname -a


40. Displays all file space usage
43
du -a
chown
df


41. Downloads a file from the internet
top
pico {filename}
wget
/lib


42. Displays the 10 top lines of a file
chown
head
dig-x
/root


43. View a text file - Very handy with ncftp.
/usr
stat
page {filename}
/media


44. Configuration for optional installed software
53
118
/var/log
/opt


45. Kills all processes by name
22
killall
less {filename}
/var


46. Displays current date and time
20
date
tail
cal


47. View a text file - View file but it scrolls.
usermod
/home
bg
cat {filename}


48. Creates a group for users
'/'
netstat -i
groupadd
80


49. Creates a file / updates it
20
bg
grep
touch


50. SQL
kill
touch
179
118