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 does S12rsyslog in the /etc/rc.d/rc2.d directory mean?






2. What does the rdnc-confgen command do?






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


4. To grow a file system






5. If a package is built on an RHEL6 system and deployed to a custom RHEL5 repository - are RHEL5 systems able to use it?






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






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






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






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


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






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






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


13. The firewall service is...






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






15. Which version of SSH should you use?






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






17. What is a virtual host?






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






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






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






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






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






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






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






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






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






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






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






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






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


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






32. SSH does...






33. What command and option can you use to enable a service to start on boot?






34. The package selection screen allows you to install any software you want during the installation process as long as...






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






36. What happens if a host changes its IP address and the keys don't match?


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






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






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


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






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






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






43. Can you put your /boot partition on a RAID 5 array?






44. What is VNC?






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






46. What is the superblock used for?






47. What command (and options) can be used to create a user named George with the description "Jr Admin"?






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






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






50. Which file shows you all the client IP addresses?