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. create the basic cache directories in /var/spool/squid with the following command:






2. after extending file system "homevol" - unmount it and then run _____ to make the filesystem size match the new larger volume.






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






4. ___________ can be on a RAID device






5. 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)






6. For linux ext2 there is an easier way than using resize2fs. LVM 1 ships with a utility called __________ which does the lvextend and resize2fs for you (it can also do file system shrinking)






7. rpm ____ to install kernel updates






8. rpm option to show me the package files






9. Apache supports security by specifying active ports through the Listen and ____ directives.






10. ____ is used to modify file system parameters






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






12. The rpm ____ option installs the package - if it isn't already installed.






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






14. in httpd.conf - "____ None" disables any .htaccess files. Otherwise - .htaccess can allow others to administer your server - starting from the DocumentRoot directory. If .htaccess is in a subdirectory - such as /var/www/html/data/ - the additional di






15. 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.






16. if you want to create a database file named webpass in the /etc/httpd directory - for user "e" - you'd start with the following command:






17. 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:






18. 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






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






20. _____ will change the size of /dev/rootvg/tmplv to 4 gig






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






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






23. 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






24. 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






25. 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






26. 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






27. ;'___ /var/www' will tell you the ACL settings of /var/www






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






29. 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






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






31. output from ____ is: Disk /dev/cciss/c0d0: 36.4 GB - 36414750720 bytes... plus listing of partitions - for each physical drive






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






33. It's much more difficult and much more time-consuming to revise partitions with utilities such as ____ or parted after RHEL is installed.






34. 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:






35. Virtual Host Configuration: Specifies an IP address for multiple virtual hosts.






36. ___ shows me what config files were installed when the httpd package was installed






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






38. ______ will show me volume info including vg - size - etc of /dev/rootvg/tmplv






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






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






41. The simplest way to install Apache






42. The main Squid configuration file is ____/squid.conf






43. To list under which run levels the web service will start






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






45. 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.






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






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






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






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






50. create a usb boot disk if the usb stick is /dev/sdc and the file you need is in your present directory