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. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
/opt
more {filename}
/proc
/var/log

2. Host-specific system-wide configuration files
/etc
page {filename}
w
mail

3. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
netstat
passwd
'/'
uptime

4. Downloads a file from the internet
wget
man
21
nslookup

5. Brings the most recent job to the foreground
chown
fg
110
ping

6. Brings an interface up
/opt
ifup
156
finger

7. Does a DNS lookup or reverse dns lookup
host
115
pico {filename}
20

8. SSH
22
ifconfig
443
/bin

9. Deletes a file
rm
22
du
tail

10. Reports a snapshot of the current processes
443
groupadd
ps
du

11. Changes password for a user
host
passwd
wget
cat {filename}

12. Test network connectivity
143
ping
cat {filename}
/var/log

13. Temporary files cleaned on reboot
kill
ifconfig -a
head
/tmp

14. Essential system binaries : init - ip - mount
/etc
finger
/sbin
wget

15. Parses for string
chgrp
/home
grep
43

16. SFTP
115
53
/var/log
wget

17. Secondary hierarchy for read-only user data
/lib
80
page {filename}
/usr

18. Displays the 10 bottom lines of a file
tail
/etc
/media
23

19. Displays the 10 top lines of a file
netstat -i
mkdir
/mnt
head

20. User root's home directory
mail
head
/root
uptime

21. Kerberos password
110
464
118
grep '{pattern}' {file}

22. Displays calendar
pwd
dig
25
cal

23. BGP
groupadd
ls -a
179
156

24. View a text file - Very handy with ncftp.
ps
ping
ifconfig -a
page {filename}

25. Changes ownership of a file or directory
touch
/lib
file
chown

26. SMTP
usermod
25
161
host

27. Changes group ownership of file or directory
dig
chgrp
netstat
sudo

28. Displays the status of a service or all services
80
service
464
cat {filename}

29. Search for all Unix commands that match keyword - e.g apropos file.
22
80
25
apropos

30. Ftp Data
/usr
less {filename}
20
443

31. Brings and interface down
mail
ifdown
/etc
head

32. Creates a file / updates it
pwd
sudo
passwd
touch

33. Mount points for removable media such as CD-ROMs
history
161
wget
/media

34. Telnet
464
page {filename}
23
df

35. View a text file - Use text editor and don't save.
pico {filename}
ifup
/home
tail

36. Users' home directories - containing saved files - personal settings - etc
file
115
/home
more {filename}

37. Kills a process by pid
dig-x
/etc
kill
netstat -r

38. Prints current working directory
179
25
/var/log
pwd

39. IMAP
bg
page {filename}
143
file

40. Elevate rights to that of root
ifconfig
rm
grep
sudo

41. Find regular expression in file.

42. DNS
21
apropos
rm
53

43. Ftp Control
mkdir
20
kill
21

44. SQL
man
464
/opt
118

45. Displays Kernel information
uname -a
179
43
man

46. Kills all processes by name
ls
cat {filename} | more
du -a
killall

47. Displays user information
finger
/lib
/mnt
cat {filename} | more

48. Copies a file
du -a
cp
netstat -r
mail

49. WHOIS
dig-x
w
43
dig

50. Adds existing user to a group
groupadd
443
cp
usermod