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. Kerberos password
man
bg
rm
464

2. Contains essential devices
118
43
/dev
file

3. Host-specific system-wide configuration files
/media
/etc
80
rm

4. Reverse dns lookup
du -a
dig-x
/bin
ls

5. SSH
cal
/opt
nslookup
22

6. SFTP
/home
115
21
apropos

7. Display all interfaces
less {filename}
more {filename}
161
ifconfig -a

8. Displays all current running processes (similar to task manager)
top
date
du -a
curl

9. Temporarily mounted filesystems
/mnt
nslookup
ifup
156

10. Mount points for removable media such as CD-ROMs
464
/home
nslookup
/media

11. List files within a directory
curl
ls
wget
cat {filename}

12. Parses for string
cp
apropos
grep
usermod

13. dns lookup
pico {filename}
dig
more {filename}
/var/log

14. 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.
20
/var
netstat -r
cal

15. Configuration for optional installed software
/opt
ifconfig -a
cat {filename} | more
22

16. Displays the connection media state and capabilities
cd
man
ethtool
156

17. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
du -a
/proc
/root
cal

18. Creates a directory
20
mkdir
/etc
/var

19. SNMP
finger
rmdir
161
page {filename}

20. DNS
53
chgrp
fg
/usr

21. Moves a file with the option of renaming it
mv
161
118
110

22. Prints current working directory
mkdir
cat
110
pwd

23. Brings an interface up
file
ifup
/lib
115

24. Displays Kernel information
grep
'/'
/bin
uname -a

25. View a text file - View file but it scrolls.
ifup
cat > {filename}
page {filename}
cat {filename}

26. View a text file - Like more - with extra features
/mnt
service
less {filename}
115

27. Prints file information
stat
netstat
uname -a
usermod

28. Prints file type
file
cp
top
ls -a

29. Elevate rights to that of root
sudo
netstat -i
/opt
netstat -r

30. Ftp Data
passwd
20
netstat -r
cat {filename} | more

31. Displays current date and time
/lib
443
ps
date

32. Test network connectivity
ping
mkdir
netstat -r
156

33. Checks web connectivity (displays page contents)
host
netstat -i
118
curl

34. Displays a table of all network interfaces / errors
du
cat {filename}
netstat -i
rm

35. Prints contains of text file
cat
/root
rm
464

36. Users' home directories - containing saved files - personal settings - etc
/home
cat {filename} | more
179
ifdown

37. Downloads a file from the internet
/usr
wget
cal
/dev

38. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
/opt
/boot
uptime
usermod

39. Search for all Unix commands that match keyword - e.g apropos file.
143
pwd
apropos
/var

40. Kills all processes by name
/opt
/root
ls
killall

41. Displays the status of a service or all services
uptime
21
service
cat {filename} | more

42. Displays system uptime
netstat
touch
killall
uptime

43. View a text file - View file one screen at a time
cp
/etc
wget
cat {filename} | more

44. SQL
rmdir
156
ifconfig -a
ifup

45. Temporary files cleaned on reboot
usermod
/tmp
80
file

46. Libraries essential for the binaries in /bin/ and /sbin/
/lib
cat {filename}
161
cal

47. User root's home directory
/root
df
cat
143

48. Adds existing user to a group
usermod
file
pwd
chown

49. View a text file - Very handy with ncftp.
less {filename}
page {filename}
netstat -i
/usr

50. Changes password for a user
groupadd
head
usermod
passwd