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. How can you check the currently mounted file systems?






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






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






5. What commands can you use to add a client machine to an LDAP server?






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






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






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






9. What is PAM used for?






10. What is a virtual host?






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






12. What is the top command used for?






13. What command can you use to view NFS statistics?






14. Which log file is used to keep track of policy violations?






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






16. What protocols are used with Dovecot?






17. What does the rdnc-confgen command do?






18. To create a RAID or LVM partition using kickstart






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






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






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






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






23. In Red Hat Enterprise Linux 6 - the default for SELinux is _______________ (which can be changed after the installation completes). For Red Hat Enterprise Linux 5 - you were able to choose what mode you wanted SELinux to start in.






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






25. How would you go about creating a static route?






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






27. What is the biggest benefit to using LVM over basic partitions?






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






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






30. Red Hat Enterprise Linux 6 is the only version that officially supports _______






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






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






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






34. By default - what is the path to a user's home directory?

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35. What is the last rule in the iptables file?

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36. What is the name of the package used to install an FTP?






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






38. Do you need to write changes to the disk when using the parted command? What about fdisk?






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






40. What command can you use to query Boolean values?






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






42. What is the point of using SELinux?






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






44. What command is used to show all services being controlled by the xinetd daemon?






45. What option is used to allow anonymous uploads to the FTP server?






46. What command and options can you use to update the time?






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






48. The virt-install package allows you to manage virtual machines _____________. The virt-manager package allows you to manage virtual machines via a GUI interface.






49. Explain the difference between soft and hard limits in quotas.

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