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. Runlevel 0 ___________. Runlevel 6 reboots the system.






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






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






4. How can you verify the status of the SSH service after the system has booted?






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






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






7. What command can you use to create a file system?






8. What command can be used to easily list all the options in the FTP main config file?






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






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






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






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






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






14. What port must be opened on the firewall for DNS?






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






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






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






18. How can you display all virtual guests after they're connected to a hypervisor?






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






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






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






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






23. What are SELinux Booleans?






24. What is the rndc utility used for?






25. What are the three modes in which the rpm command can operate?






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






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






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






29. What command-line program can you use to check your mail?






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






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






32. What command can you use to test connectivity to another host?






33. What is the /etc/vsftpd/user_list file used for?






34. Where are Yum repository config files located?






35. Through its main config file - SSH can be configured to...

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






37. The portmap service was replaced by the ______________ in Red Hat Enterprise Linux 6.






38. What option can you change in the rsyslog config file to accept remote logs (acting as a centralized logging server)?






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






40. What port does the rndc utility listen on by default?






41. A PXE server eases the automation process but isn't required for...






42. What port does the Apache web server run on - What about HTTPS?






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






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






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






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






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






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






49. What port does NFS use by default?






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