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. Libraries essential for the binaries in /bin/ and /sbin/
/lib
/sbin
143
more {filename}

2. Displays all current running processes (similar to task manager)
ps
/bin
top
wget

3. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
/bin
page {filename}
ifconfig
179

4. Test network connectivity
touch
netstat
ls
ping

5. Parses for string
grep
cat > {filename}
cp
du -a

6. Displays the 10 top lines of a file
head
dig-x
/usr
pwd

7. dns lookup
dig
mail
uptime
w

8. Deletes a file
rm
80
grep
ls

9. View a text file - Use text editor and don't save.
pico {filename}
uname -a
groupadd
w

10. SMTP
ifconfig -a
/sbin
25
apropos

11. Temporary files cleaned on reboot
cat {filename} | more
/tmp
du
pwd

12. Temporarily mounted filesystems
/mnt
du
/sbin
161

13. Contains essential devices
/dev
sudo
/var
156

14. SNMP
file
grep
service
161

15. Shows command history
/bin
kill
history
23

16. Brings the most recent job to the foreground
wget
fg
464
/etc

17. Displays a table of all network interfaces / errors
netstat -i
pwd
man
fg

18. Removes a directory
ifconfig -a
/home
rmdir
110

19. Does a DNS lookup or reverse dns lookup
man
464
cat
host

20. Displays system uptime
host
uptime
rmdir
ls -a

21. Displays user information
less {filename}
finger
bg
'/'

22. View a text file - Very handy with ncftp.
sudo
cat {filename}
dig
page {filename}

23. Mount points for removable media such as CD-ROMs
file
/media
chown
ifup

24. Creates a directory
115
ping
history
mkdir

25. POP3
bg
21
110
ethtool

26. Prints current working directory
uname -a
pwd
stat
cat > {filename}

27. List files within a directory
ls
ping
/boot
/var/log

28. Changes directories
wget
cd
cat {filename}
ifconfig -a

29. Estimate file space usage
pwd
ifup
du
grep '{pattern}' {file}

30. Report file system disk space usage
dig
sudo
ifdown
df

31. Displays manual or help document for a command/application
cat {filename}
page {filename}
man
ps

32. User root's home directory
/root
grep '{pattern}' {file}
dig
tail

33. Configuration for optional installed software
killall
/etc
chown
/opt

34. Host-specific system-wide configuration files
less {filename}
/etc
110
cat

35. SQL
rmdir
/home
less {filename}
118

36. Adds existing user to a group
chown
/usr
usermod
ifconfig -a

37. Query internet name servers interactively
dig
nslookup
/tmp
head

38. Kills all processes by name
killall
/tmp
grep
22

39. Brings an interface up
mail
rm
ifup
sudo

40. SFTP
/bin
110
ifconfig -a
115

41. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
21
uptime
/sbin
mail

42. Lists all files within a directory (including hidden)
ls -a
cat {filename}
sudo
110

43. BGP
killall
/mnt
118
179

44. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
/media
/boot
rm
pico {filename}

45. Displays the connection media state and capabilities
stat
finger
ethtool
/mnt

46. Downloads a file from the internet
/media
115
118
wget

47. Brings and interface down
ifdown
nslookup
20
/lib

48. Kerberos password
118
rmdir
/etc
464

49. Prints contains of text file
cat
23
/sbin
df

50. Displays all file space usage
cat {filename} | more
chgrp
nslookup
du -a