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. Kerberos password
/home
groupadd
man
464


2. SSH
22
sudo
more {filename}
25


3. Log files
118
110
/var/log
killall


4. Changes group ownership of file or directory
443
20
chgrp
dig-x


5. Shows command history
less {filename}
wget
uname -a
history


6. Shows who is currently logged in and where
fg
cat
w
/var/log


7. Adds existing user to a group
usermod
80
stat
host


8. Create a text file: Enter your text (multiple lines with enter are ok) and press control-d to save.
dig-x
cat > {filename}
cat {filename} | more
20


9. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
/proc
ps
/media
kill


10. View a text file - Like more - with extra features
464
w
less {filename}
/mnt


11. HTTP
ifup
file
rmdir
80


12. Host-specific system-wide configuration files
/etc
nslookup
110
wget


13. HTTPS
ifconfig
passwd
443
/usr


14. Libraries essential for the binaries in /bin/ and /sbin/
du
/opt
fg
/lib


15. Parses for string
fg
grep
chown
/boot


16. Displays manual or help document for a command/application
host
mail
man
/var


17. dns lookup
ifup
dig
cat {filename} | more
21


18. Temporarily mounted filesystems
netstat
/mnt
/lib
ls -a


19. Deletes a file
118
/proc
rm
443


20. View a text file - Very handy with ncftp.
ethtool
groupadd
netstat -r
page {filename}


21. Creates a directory
more {filename}
mkdir
kill
grep '{pattern}' {file}


22. List files within a directory
/boot
apropos
ls
23


23. View a text file - View file one screen at a time
/sbin
fg
more {filename}
ps


24. Ftp Control
usermod
/media
/var/log
21


25. Displays calendar
cal
/var/log
uptime
uname -a


26. Displays system uptime
file
uptime
/tmp
man


27. Contains essential devices
cat {filename} | more
/dev
stat
grep '{pattern}' {file}


28. Users' home directories - containing saved files - personal settings - etc
/home
53
cal
groupadd


29. Query internet name servers interactively
du
history
156
nslookup


30. 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.
/var
wget
115
/usr


31. Displays all file space usage
w
du -a
man
mkdir


32. Displays user information
killall
finger
sudo
cal


33. Prints contains of text file
mkdir
143
cat
top


34. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
stat
netstat
ifdown
143


35. Temporary files cleaned on reboot
/tmp
chgrp
bg
115


36. Changes password for a user
rmdir
53
passwd
service


37. Telnet
23
head
nslookup
/opt


38. Brings an interface up
ifup
head
touch
/tmp


39. Ftp Data
ping
/bin
20
nslookup


40. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
/opt
/boot
date
touch


41. Reports a snapshot of the current processes
cat {filename} | more
ps
dig-x
/root


42. Brings the most recent job to the foreground
ifconfig -a
/home
killall
fg


43. Display all interfaces
netstat -i
ifconfig -a
/root
ifup


44. Essential system binaries : init - ip - mount
/opt
/lib
head
/sbin


45. Displays Kernel information
pwd
/opt
uname -a
nslookup


46. Kills a process by pid
/lib
kill
netstat
mail


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


48. Secondary hierarchy for read-only user data
21
/usr
uname -a
/mnt


49. View a text file - View file one screen at a time
netstat
cat {filename} | more
143
/sbin


50. Displays a table of all network interfaces / errors
netstat -i
host
179
finger