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

2. WHOIS
nslookup
cat
43
118

3. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
wget
ifup
/proc
passwd

4. Prints contains of text file
/bin
cat
80
fg

5. Log files
/dev
pwd
uptime
/var/log

6. Estimate file space usage
head
143
179
du

7. SMTP
25
rmdir
dig-x
w

8. Changes ownership of a file or directory
chown
/dev
ethtool
cp

9. Adds existing user to a group
dig-x
file
mkdir
usermod

10. SQL
page {filename}
143
118
cat > {filename}

11. HTTPS
143
21
443
netstat -i

12. View a text file - View file one screen at a time
more {filename}
ifup
fg
dig-x

13. Creates a file / updates it
143
cat {filename} | more
touch
25

14. BGP
uname -a
179
/home
wget

15. SSH
/opt
22
ifconfig
mail

16. Displays user information
rmdir
touch
finger
file

17. Shows who is currently logged in and where
ls
21
179
w

18. Libraries essential for the binaries in /bin/ and /sbin/
more {filename}
179
/lib
file

19. Displays calendar
cal
/etc
usermod
22

20. Kerberos password
groupadd
du
179
464

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

22. Users' home directories - containing saved files - personal settings - etc
/usr
passwd
/tmp
/home

23. Query internet name servers interactively
finger
cat > {filename}
fg
nslookup

24. Display all interfaces
cd
ifconfig -a
cat {filename}
sudo

25. Secondary hierarchy for read-only user data
/usr
ping
grep '{pattern}' {file}
/proc

26. dns lookup
/sbin
netstat -i
dig
20

27. SFTP
grep '{pattern}' {file}
/usr
file
115

28. Test network connectivity
w
ps
ping
top

29. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
161
grep
mail
ethtool

30. User root's home directory
/root
ping
ifup
page {filename}

31. Removes a directory
ifconfig
history
grep
rmdir

32. 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.
161
/var
110
kill

33. Does a DNS lookup or reverse dns lookup
bg
cat {filename}
host
mkdir

34. Temporary files cleaned on reboot
usermod
pico {filename}
mkdir
/tmp

35. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
/boot
/sbin
ifup
rmdir

36. List files within a directory
cat
bg
uname -a
ls

37. Displays the 10 top lines of a file
179
head
history
host

38. Changes password for a user
w
cd
passwd
uname -a

39. Elevate rights to that of root
fg
/bin
passwd
sudo

40. Ftp Data
20
uname -a
23
/home

41. Displays Kernel information
uname -a
killall
dig-x
21

42. Host-specific system-wide configuration files
/etc
man
/var
/usr

43. View a text file - Very handy with ncftp.
'/'
/var/log
page {filename}
service

44. Checks web connectivity (displays page contents)
21
25
443
curl

45. Brings an interface up
/media
chgrp
ifup
rm

46. View a text file - Use text editor and don't save.
20
21
53
pico {filename}

47. Displays current date and time
date
less {filename}
netstat -r
464

48. Ftp Control
21
chgrp
cat {filename} | more
netstat

49. Changes directories
netstat -r
443
finger
cd

50. Prints current working directory
110
23
cat
pwd