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 query information from the kernel about RAID arrays?






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






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






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






5. What is the superblock used for?






6. What command can you use to view system processes and their CPU usage?






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






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






9. What is the name of the package that allows you to install VNC?






10. To create a RAID or LVM partition using kickstart






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






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






13. Which version of SSH should you use?






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






15. What two commands are used for package management?






16. What port does the SMTP service run on?






17. What is the benefit to using centralized authentication?


18. How can you check the currently mounted file systems?






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






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






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


22. What is a virtual host?






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






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






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






26. The firewall service is...






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






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






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






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






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






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






33. The ____________ is available for each share.






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






35. A slave DNS server provides...






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






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






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






39. What option is used with both the fdisk and parted commands to display the current partition tables?






40. How can virtual hosts be used?






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






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


43. Samba servers can...






44. What does the testparm command do?






45. What protocols are used with Dovecot?






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






47. 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...


48. What does ifconfig 172.168.1.100 netmask 255.255.255.0 eth1 do?






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






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