Test your basic knowledge |

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. Can you name three utilities that can be used for network or DNS client troubleshooting?






2. What command displays your current interfaces and IP address?






3. The ____________ is available for each share.






4. Should you allow remote root access - Why or why not?


5. What command can you use to create a new SSL certificate?






6. What is a swap? Is it created as a partition or device file?






7. Are additional packages besides httpd required for a secure website - If so - what are they?






8. What are the two config files for Postfix called?






9. What command and option do you use to view the description of Boolean values?






10. What two commands are special for dealing with user login events?






11. What client-side command can you use to test your FTP server connection?






12. How do you run a command with elevated privileges?






13. What is the difference between an A record and a PTR record?






14. What three commands can you use to help verify that the DNS server is functioning properly?






15. What three protocols can you use to perform network installations?






16. What happens if you call the command from question 3 with the -c option after it has already been run?






17. What command can you use to manage system services?






18. What is the xinetd service used for?






19. What directory is used to represent the virtual file system created by the kernel?






20. How would you disable SELinux protection for NFS - allowing shares to be read/write?






21. A service needs to have _______________ to be able to use it.






22. How can you check the currently mounted file systems?






23. What happens if a host changes its IP address and the keys don't match?


24. The default SMTP service has been changed from _________ to Postfix in Red Hat Enterprise Linux 6.






25. What is the point of using SELinux?






26. Which file contains all messages generated during installation that can be used for troubleshooting if the need arises?






27. Editing the /etc/xinetd.d/tftp file and enabling the service are the same as running the chkconfig tftp on command. Both of these actions...






28. The INPUT chain being used is the default under Red Hat Enterprise Linux 5. This rule...






29. Where are Yum repository config files located?






30. What is NAT - How is it used?






31. How can virtual hosts be used?






32. What command can you use to create your own repositories?






33. How can you change the security context of a directory to work with Apache?






34. What command can be used to view the queue for at service jobs?






35. What command can you use to view the current ACL on a file?






36. What options with the yum command would you use to remove a package?






37. What option at the GRUB boot menu can you use to append something to a kernel?






38. What port does the DHCP server listen on by default?






39. FTP is one of three protocols ______________. The other two protocols are NFS and HTTP.






40. What is the difference between an ext2 and ext3 file system?


41. It is possible to run scripts before a kickstart installation. This is done by...






42. What is PAM used for?






43. What command is used to create a user for Samba?






44. The firewall service is...






45. What is the benefit to using centralized authentication?


46. What is the format of the /etc/shadow file?






47. What is the /etc/hosts file used for?


48. What are SELinux Booleans?






49. How can you list all services on the system to tell whether they will boot during startup?






50. What is the rndc utility used for?