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 command can you use to change the context of files?






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






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






4. What is the top command used for?






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

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






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






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






9. The at command is used to ____________. The cron service handles reoccurring system jobs.






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






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






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






13. Editing the /etc/xinetd.d/tftp file and enabling the service are the same as running the chkconfig tftp on command. Both of these actions...






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






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






16. What are SELinux Booleans?






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






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






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






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






21. 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.






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






23. What file needs to be edited so that the system will mount a file system at boot time?






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

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






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






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






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






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






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






31. Where are Yum repository config files located?






32. Which version of SSH should you use?






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

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






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






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






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






38. What port does the SMTP service run on?






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

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






41. To grow a file system






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






43. The exportfs command is used to...






44. A slave DNS server provides...






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






46. What does ifconfig 172.168.1.100 netmask 255.255.255.0 eth1 do?






47. What command can you use to validate the syntax of the Apache config file?






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






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






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