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

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2. What option needs to be used with the mount command to mount an NFS resource?






3. Which file shows you all the client IP addresses?






4. What command is used to change the mail server from Sendmail to Postfix (useful only if you have both installed)?






5. What is the default port that Squid runs on?






6. Can you name the two commands that can be used to view the free space on the system?






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






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






9. What is a gateway used for on a network?






10. What critical step must you take after updating the kernel to a newer version?






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






12. Before you work with ACLs - what do you need to do to the file system?






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






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






15. The package selection screen allows you to install any software you want during the installation process as long as...






16. What is the xinetd service used for?






17. What are the two types of back-end authentication mechanisms discussed in this chapter?






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






19. How would you view all Boolean options for the HTTP service?






20. What command would you use to create a group - to add the user George to the group?






21. What command and option can you use to enable a service to start on boot?






22. What are the three items that make up LVM?






23. What is a virtual host?






24. There are four types of DNS servers. Name them.






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






26. What two ports should be opened on the firewall for the FTP server to function properly?






27. Runlevel 0 ___________. Runlevel 6 reboots the system.






28. What command is used to create an RPM package?






29. SSH does...






30. What command can you use to check the config file of the DHCP server?






31. What command can you use to test the config files before starting the DNS service?






32. What are the five required directories when building RPMS?






33. What file is used to maintain custom parameters for the kernel during system boot?






34. What does the following firewall rule accomplish: iptables -I INPUT 5 -p tcp -m tcp --dport 80 -j ACCEPT?






35. What command can you use to create a password-protected page?






36. What command can you use to view system processes and their CPU usage?






37. What are the three different types of RAID described in this chapter?






38. What is the difference between the update (-U) and install (-i) options when using rpm to update the kernel?






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

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40. What command can you use to query information from the kernel about RAID arrays?






41. What does the partprobe command do?






42. What command disables the SSH service from running when the system boots?






43. If you want a specific action to take place when user01 logs in to the system - which file would you edit?






44. What does it mean if you ping a host and you receive the response Destination Unreachable?






45. Which remote management service is installed by default?Can you name the port that it uses?






46. Is it possible to share files among groups - What permissions would you set on the directory to accomplish file sharing if possible?






47. GRUB has three stages. Can you name them?






48. You must dictate the ____________ you want allocated to your virtual machine when you create it.






49. What are SELinux Booleans?






50. How would you install a group of packages all at a single time?