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. What is the xinetd service used for?






2. Most boot issues can be resolved by...






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






4. What benefit does a web proxy provide to your network?






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






6. What does ifconfig 172.168.1.100 netmask 255.255.255.0 eth1 do?






7. Samba servers can...






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






9. What port on the firewall needs to be open for the TFTP server to work?






10. What is the virsh command used for?






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






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






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






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






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






16. What happens to jobs that are scheduled to run while the system is off?






17. SSH does...






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






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






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






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






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

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






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






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






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






28. What port does NFS use by default?






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






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






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






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






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






34. Place all files you want added to a _______________ during creation.

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35. What is the /var/lib/nfs/etab file used for?






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






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






38. What does the rdnc-confgen command do?






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






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

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41. What port does the SMTP service run on?






42. What protocols are used with Dovecot?






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






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






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






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






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






48. What is the benefit to using centralized authentication?

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49. Before you work with quotas - what do you need to do to the file system?






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