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. Configuration for optional installed software
/home
netstat
/opt
usermod

2. Prints current working directory
'/'
mv
pwd
dig-x

3. Temporarily mounted filesystems
/tmp
ifconfig -a
23
/mnt

4. SMTP
netstat -i
25
date
mkdir

5. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
file
/media
netstat
pico {filename}

6. SQL
464
118
w
/tmp

7. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
mail
115
grep
cat > {filename}

8. Displays user information
156
finger
115
cd

9. Elevate rights to that of root
cat
sudo
du -a
118

10. Brings and interface down
ifdown
bg
df
fg

11. Displays Kernel information
uname -a
dig-x
service
443

12. Displays kernel routing tables
netstat -r
pico {filename}
cp
uptime

13. Lists all files within a directory (including hidden)
ls -a
service
netstat -i
sudo

14. Create a text file: Enter your text (multiple lines with enter are ok) and press control-d to save.
443
dig-x
/tmp
cat > {filename}

15. Does a DNS lookup or reverse dns lookup
grep
df
groupadd
host

16. Creates a file / updates it
'/'
du
/dev
touch

17. Kerberos password
464
cat {filename}
less {filename}
more {filename}

18. Essential system binaries : init - ip - mount
touch
/sbin
man
20

19. SFTP
pico {filename}
ls
115
usermod

20. Display all interfaces
mail
cd
chown
ifconfig -a

21. HTTP
/dev
80
page {filename}
/mnt

22. Displays the 10 bottom lines of a file
ping
/media
curl
tail

23. View a text file - Very handy with ncftp.
page {filename}
cat
w
grep

24. Removes a directory
cat > {filename}
ls -a
rmdir
bg

25. Prints file type
ps
netstat -r
file
head

26. HTTPS
sudo
less {filename}
118
443

27. Ftp Control
156
21
cd
rmdir

28. Checks web connectivity (displays page contents)
df
curl
53
ping

29. Displays manual or help document for a command/application
man
110
chgrp
grep

30. Creates a directory
apropos
file
less {filename}
mkdir

31. Displays all current running processes (similar to task manager)
/var
top
/tmp
/root

32. Displays all file space usage
du -a
161
top
/usr

33. Brings the most recent job to the foreground
/sbin
ethtool
fg
nslookup

34. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
cat {filename} | more
/proc
rm
dig-x

35. BGP
179
dig
161
kill

36. Secondary hierarchy for read-only user data
uname -a
/usr
ifdown
curl

37. Brings an interface up
ps
/media
ifup
uptime

38. Shows who is currently logged in and where
du -a
df
/opt
w

39. Estimate file space usage
host
/var
du -a
du

40. Displays system uptime
21
history
156
uptime

41. Creates a group for users
rm
df
groupadd
ethtool

42. SSH
cat
110
22
cat > {filename}

43. Shows command history
/proc
history
top
uptime

44. View a text file - View file one screen at a time
pwd
cat {filename} | more
netstat -r
/proc

45. Telnet
pwd
/proc
'/'
23

46. Test network connectivity
ping
ps
curl
chgrp

47. Search for all Unix commands that match keyword - e.g apropos file.
apropos
/home
groupadd
more {filename}

48. Host-specific system-wide configuration files
netstat -r
cal
/etc
43

49. Report file system disk space usage
/lib
ethtool
tail
df

50. Users' home directories - containing saved files - personal settings - etc
23
killall
/home
/var/log