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. Essential system binaries : init - ip - mount
/home
/sbin
ls
143

2. Search for all Unix commands that match keyword - e.g apropos file.
161
21
uptime
apropos

3. Does a DNS lookup or reverse dns lookup
chgrp
host
uptime
df

4. Creates a file / updates it
touch
115
cat {filename}
179

5. Creates a group for users
host
sudo
groupadd
netstat -i

6. SSH
ps
netstat -i
/lib
22

7. DNS
head
25
53
history

8. Report file system disk space usage
df
/opt
ifconfig -a
host

9. Prints file information
stat
mkdir
80
tail

10. Check IP Addresses of active interfaces
ifconfig
/etc
rm
/opt

11. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
/mnt
21
/media
mail

12. Prints current working directory
53
/tmp
pwd
/usr

13. Moves a file with the option of renaming it
mv
top
mail
page {filename}

14. View a text file - Like more - with extra features
ifconfig -a
stat
tail
less {filename}

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

16. Displays a table of all network interfaces / errors
top
cp
netstat -i
chown

17. Displays calendar
118
161
53
cal

18. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
/proc
stat
uptime
80

19. Displays current date and time
22
date
mv
cat

20. POP3
usermod
110
mkdir
25

21. HTTPS
/etc
43
groupadd
443

22. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
w
killall
/boot
df

23. SQL
179
cp
118
service

24. Mount points for removable media such as CD-ROMs
ping
/media
less {filename}
'/'

25. Checks web connectivity (displays page contents)
/lib
22
curl
more {filename}

26. Displays all current running processes (similar to task manager)
110
/opt
top
/sbin

27. Brings and interface down
w
du
ifdown
nslookup

28. Brings an interface up
history
ifup
/bin
netstat -r

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

30. View a text file - View file one screen at a time
cat {filename} | more
dig
mail
service

31. Brings the most recent job to the foreground
443
fg
/var/log
history

32. Changes ownership of a file or directory
top
/mnt
118
chown

33. Elevate rights to that of root
ls -a
dig
cat {filename} | more
sudo

34. Display all interfaces
143
ifup
ifconfig -a
groupadd

35. Parses for string
rm
grep
/lib
143

36. SQL
156
ls
23
grep

37. dns lookup
dig
w
top
/dev

38. Reports a snapshot of the current processes
ifdown
/tmp
passwd
ps

39. Downloads a file from the internet
wget
/boot
cat {filename} | more
143

40. IMAP
ifup
apropos
143
464

41. Lists all files within a directory (including hidden)
/usr
cd
usermod
ls -a

42. Telnet
mail
23
more {filename}
43

43. Displays kernel routing tables
netstat -r
tail
464
ls -a

44. Changes group ownership of file or directory
ethtool
service
chgrp
/root

45. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
ifconfig -a
netstat
cd
156

46. Libraries essential for the binaries in /bin/ and /sbin/
nslookup
ifdown
/var
/lib

47. Kills a process by pid
kill
25
ifup
/usr

48. HTTP
/dev
/boot
43
80

49. BGP
179
du
usermod
rm

50. User root's home directory
apropos
/root
43
uptime