Test your basic knowledge |

Linux Administration

Subject : it-skills

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. View a text file - Use text editor and don't save.
cat {filename}
pico {filename}
uname -a
nslookup

2. Estimate file space usage
/bin
du
ifup
pico {filename}

3. Displays Kernel information
rm
/usr
uname -a
bg

4. Displays the connection media state and capabilities
ethtool
uname -a
ls
ifconfig

5. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
pwd
cat
/bin
wget

6. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
df
netstat
netstat -i
110

7. Displays manual or help document for a command/application
man
/media
pico {filename}
mv

8. Search for all Unix commands that match keyword - e.g apropos file.
apropos
rmdir
netstat
killall

9. Temporary files cleaned on reboot
/tmp
ps
/media
/dev

10. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
cd
/boot
/home
/var

11. dns lookup
bg
/var/log
less {filename}
dig

12. Checks web connectivity (displays page contents)
25
23
curl
netstat

13. SMTP
grep '{pattern}' {file}
w
25
top

14. Reverse dns lookup
25
dig-x
rmdir
/usr

15. Displays calendar
20
chown
kill
cal

16. DNS
groupadd
53
464
mkdir

17. Shows who is currently logged in and where
ifconfig -a
w
/media
/bin

18. List files within a directory
ls
netstat
dig-x
cp

19. Temporarily mounted filesystems
/mnt
fg
143
/bin

20. Find regular expression in file.

21. Users' home directories - containing saved files - personal settings - etc
/home
ls
43
mail

22. Moves a file with the option of renaming it
ls -a
/usr
110
mv

23. Changes directories
115
ping
cd
cal

24. Ftp Control
21
/boot
20
chgrp

25. Libraries essential for the binaries in /bin/ and /sbin/
cat > {filename}
/lib
host
du -a

26. Secondary hierarchy for read-only user data
/usr
/sbin
curl
/media

27. Query internet name servers interactively
nslookup
less {filename}
rmdir
mkdir

28. Reports a snapshot of the current processes
ps
page {filename}
apropos
top

29. Changes group ownership of file or directory
apropos
curl
/bin
chgrp

30. Elevate rights to that of root
uptime
sudo
pwd
161

31. Kills a process by pid
/media
kill
df
netstat -i

32. Prints contains of text file
cat
less {filename}
w
/bin

33. SSH
/opt
22
mkdir
443

34. Prints file type
file
page {filename}
21
rmdir

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

36. WHOIS
43
chown
/bin
service

37. Test network connectivity
ping
ethtool
118
du

38. Lists all files within a directory (including hidden)
/bin
cal
25
ls -a

39. POP3
top
pico {filename}
22
110

40. BGP
179
ifdown
/lib
usermod

41. Copies a file
cp
cal
mv
mkdir

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

43. Creates a directory
file
/bin
mkdir
netstat

44. Contains essential devices
du -a
179
/dev
touch

45. Displays all current running processes (similar to task manager)
ethtool
dig-x
/opt
top

46. Brings and interface down
23
cat {filename} | more
22
ifdown

47. Check IP Addresses of active interfaces
mail
rmdir
ifconfig
du -a

48. Brings an interface up
ifup
uptime
ps
curl

49. Displays the status of a service or all services
443
service
ifconfig
date

50. Lists all stopped/paused background. Resumes a stopped job
killall
bg
finger
grep '{pattern}' {file}