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. Displays the status of a service or all services
464
20
service
/bin

2. SQL
ifup
110
156
143

3. Creates a group for users
cal
host
less {filename}
groupadd

4. Brings an interface up
page {filename}
/etc
ifup
du

5. Displays the 10 top lines of a file
/proc
dig-x
rm
head

6. Essential system binaries : init - ip - mount
43
netstat -r
/sbin
20

7. View a text file - View file one screen at a time
date
more {filename}
netstat
w

8. Does a DNS lookup or reverse dns lookup
/root
53
host
115

9. Ftp Control
/var/log
du -a
kill
21

10. Brings and interface down
ifdown
/proc
cat
page {filename}

11. Reverse dns lookup
156
dig-x
115
usermod

12. Check IP Addresses of active interfaces
ifconfig
/home
service
netstat -i

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

14. Elevate rights to that of root
tail
sudo
less {filename}
80

15. View a text file - View file one screen at a time
bg
groupadd
cat {filename} | more
ifconfig

16. 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.
/var
grep
53
rmdir

17. Prints file information
stat
rm
23
cp

18. Parses for string
ifconfig
/proc
grep
/mnt

19. Contains essential devices
118
ping
/dev
usermod

20. Report file system disk space usage
/proc
rm
df
netstat

21. Configuration for optional installed software
/proc
chown
/tmp
/opt

22. Creates a directory
mail
mkdir
top
stat

23. Displays system uptime
mv
bg
top
uptime

24. Lists all stopped/paused background. Resumes a stopped job
bg
top
usermod
fg

25. SQL
netstat
ps
passwd
118

26. Moves a file with the option of renaming it
161
mv
netstat -r
cp

27. Shows who is currently logged in and where
110
w
nslookup
/tmp

28. Displays all file space usage
du -a
history
/root
rmdir

29. Libraries essential for the binaries in /bin/ and /sbin/
/lib
top
groupadd
80

30. Checks web connectivity (displays page contents)
mail
cat {filename} | more
curl
mv

31. Temporary files cleaned on reboot
bg
groupadd
/tmp
grep '{pattern}' {file}

32. POP3
110
/var/log
date
rm

33. DNS
53
/mnt
ps
date

34. Host-specific system-wide configuration files
cp
/etc
nslookup
netstat -r

35. Search for all Unix commands that match keyword - e.g apropos file.
man
apropos
ifconfig -a
22

36. Kills all processes by name
killall
less {filename}
service
netstat

37. Changes password for a user
/sbin
/boot
head
passwd

38. IMAP
ls
143
netstat -r
43

39. Ftp Data
/proc
pico {filename}
/mnt
20

40. SSH
grep '{pattern}' {file}
22
/sbin
ls

41. Reports a snapshot of the current processes
53
ps
443
uptime

42. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
du -a
sudo
mail
dig

43. View a text file - Use text editor and don't save.
25
top
ethtool
pico {filename}

44. Estimate file space usage
464
grep
du
page {filename}

45. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
netstat
finger
head
wget

46. Prints file type
dig
usermod
page {filename}
file

47. Secondary hierarchy for read-only user data
nslookup
53
/usr
pico {filename}

48. Kills a process by pid
kill
history
finger
chown

49. Creates a file / updates it
touch
rmdir
curl
21

50. Displays manual or help document for a command/application
man
top
pico {filename}
cat > {filename}