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. Kills all processes by name
du
/tmp
/opt
killall

2. Downloads a file from the internet
less {filename}
143
usermod
wget

3. Shows who is currently logged in and where
rm
finger
du -a
w

4. Copies a file
/sbin
du -a
cp
passwd

5. SFTP
cat {filename}
115
netstat -i
156

6. Does a DNS lookup or reverse dns lookup
host
ls
usermod
/sbin

7. SQL
156
118
date
/proc

8. HTTPS
443
wget
/var/log
23

9. Displays the connection media state and capabilities
ethtool
161
groupadd
chgrp

10. Prints contains of text file
uptime
cat
uname -a
ls -a

11. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
/bin
cat > {filename}
bg
more {filename}

12. BGP
netstat -i
179
/root
/mnt

13. Query internet name servers interactively
nslookup
mkdir
20
118

14. Telnet
23
ifup
fg
du

15. Users' home directories - containing saved files - personal settings - etc
cat {filename} | more
ifconfig
mv
/home

16. Displays all file space usage
du -a
143
top
21

17. Creates a file / updates it
ps
115
touch
mv

18. SNMP
uname -a
cat > {filename}
161
file

19. IMAP
mkdir
179
fg
143

20. Changes password for a user
w
groupadd
grep '{pattern}' {file}
passwd

21. View a text file - Very handy with ncftp.
110
page {filename}
/etc
cat {filename} | more

22. Displays calendar
nslookup
du
groupadd
cal

23. Lists all files within a directory (including hidden)
pico {filename}
stat
ls -a
ifconfig -a

24. Contains essential devices
service
/dev
115
143

25. SMTP
/var
more {filename}
netstat -r
25

26. Temporarily mounted filesystems
/etc
chgrp
/mnt
118

27. Shows command history
179
netstat
history
df

28. Check IP Addresses of active interfaces
ifconfig
du
464
cp

29. Creates a directory
mkdir
443
cat {filename} | more
w

30. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
uname -a
/proc
ls -a
head

31. HTTP
killall
history
80
stat

32. View a text file - Use text editor and don't save.
pico {filename}
du -a
mv
uptime

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

34. Secondary hierarchy for read-only user data
usermod
netstat -r
head
/usr

35. Essential system binaries : init - ip - mount
dig
pico {filename}
/sbin
/tmp

36. Brings and interface down
ifdown
passwd
netstat -r
/root

37. Prints current working directory
dig
cd
/var
pwd

38. POP3
more {filename}
du -a
cat > {filename}
110

39. Displays manual or help document for a command/application
fg
nslookup
tail
man

40. Displays the 10 bottom lines of a file
tail
less {filename}
rmdir
mv

41. Lists all stopped/paused background. Resumes a stopped job
23
bg
page {filename}
df

42. Adds existing user to a group
usermod
fg
cal
groupadd

43. Test network connectivity
/home
ping
23
rm

44. Displays system uptime
cp
ping
uptime
161

45. Brings an interface up
ls -a
netstat -i
ifup
bg

46. Kills a process by pid
kill
bg
uname -a
mkdir

47. Libraries essential for the binaries in /bin/ and /sbin/
/root
cp
/lib
kill

48. Host-specific system-wide configuration files
/etc
443
netstat
/var/log

49. Display all interfaces
22
du
ifconfig -a
115

50. Log files
ps
uptime
netstat -r
/var/log