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






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






3. What is the rndc utility used for?






4. Where are Yum repository config files located?






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






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






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






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






9. What command can you use to get information about logical volumes?






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






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

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






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






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






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






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






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






18. What command do you use to report information on quota usage?






19. What two commands are used for package management?






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






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






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






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






24. What command can you use to view mounted Samba shares?






25. What port does the SMTP service run on?






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






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






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






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






30. For Red Hat Enterprise Linux 6 - SELinux comes set up in enforcing mode. When installing Red Hat Enterprise Linux 5 - you have the option to...

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






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






33. The exportfs command is used to...






34. What is the main config file for the DHCP service?






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






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

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






38. What is the top command used for?






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






40. What command can you use to change the context of files?






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

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42. What is SSH used for?






43. What is the benefit to using centralized authentication?

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






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






46. The firewall service is...






47. What port does NFS use by default?






48. What is the benefit of using public/private key authentication?

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49. SSH does...






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







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