Test your basic knowledge |

Redhat Linux Administration

Subject : it-skills
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. If you want to add an iptables command to forward TCP port 80 traffic to TCP port 3128 - you would use the following:






2. SELinux must be configured to Allow HTTPD To Read Home Directories. (Alternatively - activate the httpd_enable_homedirs boolean with the __ command.)






3. ____ prints superblock and block group information.






4. rpm ____ to import the rpm key for integrity checking






5. You need to configure firewalls and allow SELinux access in appropriate ways. Firewalls must allow access to the standard HTTP port - 80. SELinux must be configured to "Allow HTTPD To Read Home Directories". Finally - the ACL must be revised accordin






6. This line placed in /etc/hosts.deny denies all services except TFTP to computers in the example.org domain






7. This line placed in /etc/hosts.deny will mean that only computer allowed to access our Telnet server has an IP address of 192.168.1.10






8. for http - if you implement "UserDir public_html" - you need to also ____ /home/michael if you want /home/michael/public_html accessible






9. If you configure other directories for Web services - you'll need to change their ACL settings. For example - if you create and then use the /www directory - run the following commands:






10. Perform a simple check of the file system. minor-num is x.






11. This line: in /etc/hosts.allow: telnetd : 172.16.72.0/255.255.254.0 is ____






12. Virtual Host Configuration: Creates an error log; the location is based on the DocumentRoot.






13. Run the ____ command to find the device associated with the USB key.






14. List sboth the client hostname or IP address and mounted directory in host:dir format. This info should not be considered reliable.






15. use grep to count how many repositories have been configured in the file server1.repo






16. This line looks deceptively simple; it limits what readers see about your Web server when you browse to a nonexistent page. If you don't use this command - outsiders can see whether you've loaded modules such as Perl - Python - and PHP. Sharing this






17. You can check the status of your share. If it's working - you should see the contents of the /etc/exports directory when you run the following command:






18. This line placed in /etc/hosts.deny sends a customized error message for Telnet users on the crack.org domain saying sorry [insert client info] - access denied






19. ___ to update the httpd package - automatically answering yes to all the questions






20. ___ will tell me if any files in the pam package have changed since it was first installed






21. When you configure Squid on your system - you need to allow access through appropriate ports and SELinux settings. The simplest approach with respect to Squid configuration assumes that all clients use the default Squid port 3128 - using TCP - where






22. Some computers built before 1998 may have a BIOS that limits access to hard disks beyond the 1024th cylinder. Some older BIOSs report only 1024 cylinders on a hard drive no matter how many actual cylinders are present. Computers that are subject to t






23. The simplest way to install Apache






24. rpm ____ to install kernel updates






25. The most straightforward way to make sure Apache starts in bootlevels 3 and 5






26. Virtual Host Configuration: Sets a root directory for the virtual host.






27. how to install both mod_ssl and squid packages






28. Virtual Host Configuration: Creates an custom log; the location is based on the DocumentRoot. (from http://www.books24x7.com/book/id_18196/viewer.asp?bookid=18196&chunkid=218985502)






29. rpm ____ verifies all installed rpms against the rpm database






30. rpm ____ verifies the installed zip rpm against the rpm database






31. for SELinux - you'll at least want to use the Security Level Configuration tool to activate the Allow Squid Daemon To Connect To The Network option - also known as the squid_connect_any boolean. Alternatively - you can activate this boolean with the






32. The default Red Hat Enterprise Linux firewall blocks access to an NFS server. While inelegant - the following command "flushes -" or turns off - the standard Linux firewall from the local computer.






33. To update a kernel - 1) ____ 2) boot new kernel to test 3) revert to old kernel if problems 4) yum remove kernel-oldversion if no problems






34. You ran "e2label /dev/sda" and got "bad magic number" Why?






35. ____.com - ____.net - and ____.org domains are generic domain names that can't be assigned on the Internet. You can therefore use any of these domain names on your private network.






36. ____ is used to modify file system parameters






37. You can use the ____ tool after installation to add any package groups that you missed.






38. for http - if you implement "UserDir public_html" - you need to also ____ /home/michael/public_html if you want /home/michael/public_html accessible






39. The file that might contain: oldvg - rootvg - etc.






40. rpm options include rpm -q [package name] or rpm -qf [path/file] or rmp -q____






41. ___ http://devmon.dev.schwab.com/index.html will make a local copy of the index.html file from devmon






42. when an rpm install fails for xxxx because the same version is already apparently installed - run ____ to just install it all again






43. As you may not have access to the GUI during the Red Hat exams - you need to know how to use text-based browsers. The standard is ____






44. ____ can expand and shrink ext2 and ext3 file systems






45. logical partitions on a hard drive always start with number ____; on the first PATA/IDE hard drive on a PC - that is hda____.






46. You just finished editing your /etc/yum.repos.d/*repo file and want yum to use the new info - so you run ____






47. after you edit /etc/exports - run service ___ stop...






48. ____ is used for creating ext2 and ext3 file systems






49. To verify integrity of an rpm package - ____/rpm-gpg/RPM-GPG-KEY-redhat-release






50. The RPM database also maintains an MD5 checksum of each file. With the checksum - you can use the ____ package command to determine whether any file from that RPM package has changed.