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. Ftp Control
ls -a
21
cat {filename}
179

2. Reverse dns lookup
mv
grep
dig-x
bg

3. Kills a process by pid
grep '{pattern}' {file}
less {filename}
kill
grep

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

5. List files within a directory
80
cat {filename} | more
ls
man

6. Mount points for removable media such as CD-ROMs
curl
/media
page {filename}
du -a

7. Prints contains of text file
curl
pico {filename}
cat
23

8. Create a text file: Enter your text (multiple lines with enter are ok) and press control-d to save.
kill
service
cat > {filename}
groupadd

9. Brings and interface down
service
53
ifdown
/media

10. Libraries essential for the binaries in /bin/ and /sbin/
cat > {filename}
uptime
/lib
dig

11. Changes directories
143
mkdir
kill
cd

12. View a text file - Like more - with extra features
less {filename}
/bin
cat > {filename}
df

13. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
grep
464
/boot
mv

14. Brings the most recent job to the foreground
/root
fg
uname -a
dig-x

15. Telnet
23
kill
/dev
chown

16. Downloads a file from the internet
wget
cal
less {filename}
ifconfig -a

17. Elevate rights to that of root
cat {filename}
passwd
sudo
uname -a

18. Test network connectivity
ifconfig
history
/home
ping

19. Changes group ownership of file or directory
chgrp
/var/log
ls -a
df

20. SSH
22
df
uptime
/etc

21. 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.
ifconfig
/var
161
stat

22. SFTP
118
rm
115
cat {filename}

23. SMTP
sudo
df
25
kill

24. Ftp Data
/lib
/mnt
20
uptime

25. Creates a file / updates it
115
/boot
touch
80

26. Parses for string
grep
ethtool
chown
/sbin

27. View a text file - View file one screen at a time
464
cat {filename} | more
man
less {filename}

28. POP3
464
/boot
110
pwd

29. Kerberos password
grep '{pattern}' {file}
pico {filename}
/media
464

30. Check IP Addresses of active interfaces
ifconfig
156
/sbin
curl

31. Log files
nslookup
tail
cd
/var/log

32. Secondary hierarchy for read-only user data
chgrp
ethtool
/usr
fg

33. Creates a group for users
cp
rm
finger
groupadd

34. View a text file - Very handy with ncftp.
man
host
netstat -i
page {filename}

35. Checks web connectivity (displays page contents)
usermod
curl
uname -a
chown

36. Displays user information
25
finger
stat
/tmp

37. View a text file - View file but it scrolls.
top
w
sudo
cat {filename}

38. Displays all current running processes (similar to task manager)
ifdown
118
top
cat {filename} | more

39. Host-specific system-wide configuration files
/etc
man
/home
stat

40. Shows who is currently logged in and where
w
netstat
cal
/tmp

41. Displays kernel routing tables
netstat -r
'/'
25
stat

42. Adds existing user to a group
usermod
pwd
apropos
grep '{pattern}' {file}

43. Prints current working directory
bg
pwd
wget
curl

44. Temporary files cleaned on reboot
/boot
80
443
/tmp

45. SQL
ifconfig
20
apropos
118

46. Displays a table of all network interfaces / errors
apropos
netstat -i
ethtool
cd

47. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
110
cat > {filename}
nslookup
/proc

48. IMAP
kill
143
161
/sbin

49. User root's home directory
ifconfig -a
/root
mail
killall

50. dns lookup
host
wget
dig
ethtool