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. Find regular expression in file.

2. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
43
nslookup
/usr
/proc

3. SQL
w
156
cd
netstat -i

4. Displays the 10 top lines of a file
80
head
43
/usr

5. Elevate rights to that of root
sudo
161
ls -a
more {filename}

6. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
host
mail
/bin
/mnt

7. Displays Kernel information
ping
uname -a
dig-x
kill

8. Brings an interface up
ifup
grep
mkdir
passwd

9. Prints contains of text file
kill
cat
mkdir
22

10. Estimate file space usage
du
/root
ifconfig
pico {filename}

11. Displays the 10 bottom lines of a file
tail
21
wget
groupadd

12. Displays calendar
rm
ps
cal
groupadd

13. 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.
du
touch
wget
/var

14. Contains essential devices
head
chown
/dev
cal

15. Lists all stopped/paused background. Resumes a stopped job
43
bg
touch
history

16. Changes group ownership of file or directory
file
chgrp
ls -a
netstat -i

17. Mount points for removable media such as CD-ROMs
/media
uname -a
history
161

18. Configuration for optional installed software
/dev
/opt
/root
fg

19. Displays manual or help document for a command/application
man
finger
cal
ethtool

20. Log files
/var
/var/log
25
ls

21. Test network connectivity
ping
21
killall
uname -a

22. Query internet name servers interactively
bg
nslookup
netstat -r
du -a

23. Telnet
443
mv
23
rm

24. Changes ownership of a file or directory
file
du -a
chown
20

25. Does a DNS lookup or reverse dns lookup
host
page {filename}
443
sudo

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

27. Essential system binaries : init - ip - mount
/sbin
'/'
mkdir
43

28. User root's home directory
/home
/root
uptime
grep

29. Moves a file with the option of renaming it
mv
chown
/proc
netstat -r

30. Reverse dns lookup
chown
dig-x
ifdown
head

31. Temporarily mounted filesystems
/mnt
less {filename}
/root
mail

32. Parses for string
less {filename}
grep
dig
rm

33. Ftp Data
date
/mnt
20
/var

34. SNMP
161
53
/lib
history

35. Deletes a file
rm
/usr
cat {filename}
/var/log

36. Shows who is currently logged in and where
pico {filename}
df
ps
w

37. Displays all file space usage
wget
netstat -r
110
du -a

38. WHOIS
rmdir
/sbin
110
43

39. Displays a table of all network interfaces / errors
grep '{pattern}' {file}
/sbin
history
netstat -i

40. Creates a file / updates it
history
115
chgrp
touch

41. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
/var
uptime
du
netstat

42. SMTP
/sbin
mkdir
25
464

43. Displays all current running processes (similar to task manager)
cat
df
top
ifconfig -a

44. View a text file - Very handy with ncftp.
service
pwd
page {filename}
chown

45. Copies a file
mkdir
25
cp
du

46. Kills all processes by name
grep '{pattern}' {file}
killall
wget
143

47. Temporary files cleaned on reboot
uname -a
netstat -r
/tmp
20

48. Brings the most recent job to the foreground
143
/opt
fg
date

49. HTTPS
443
ifconfig
/proc
sudo

50. Report file system disk space usage
df
118
/lib
53