Test your basic knowledge |

RHCSA Commands

Subjects : certifications, it-skills, rhcsa

Instructions:

Answer 50 questions in 15 minutes.
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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. Where are HTML pages hosted?
palimpsest
/var/www/html/
/etc/sysconfig/network
/etc/sysconfig/resolv.conf

2. Grep for lines that do not match (-v)
2>&1
$ grep -v ^# /etc/nsswitch.conf
ssh-keygen
man search :/repository

3. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
service sshd restart
/etc/ssh/sshd_config
#iptables -I INPUT -p tcp --dport 21 -j Accept
ntpdate -b instructor

4. Set a VNC password
logwatch
vncpasswd
# vi /etc/inittab change - id:3:initdefault:
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

5. System config firewall
system-config-date
GUI menu system/administratrion/firewall
# cat /var/log/messages | grep [Ff]ailed | less
yum install tigervnc-server

6. Backup a home directory on desktop6 to /tmp on server6
insert as opposed to append
rsync /home root@server6.example.com:/tmp
yum search firefox
# yum

7. See files installed with a package named vsftpd
# star -x -f=home.star
rpm -ql vsftpd
/var/log/maillog
tar czvf /tmp/etc.tar.gz /etc

8. Stores IPtables rules (filter) chains - input forward output are persistant
/etc/sysconfig/iptables
$ grep -v ^# /etc/nsswitch.conf
*.debug /var/log/debug.log service rsyslog restart
rpm -ql vsftpd

9. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
# renice -10 proc-id
rsync -a /home/test1.html root@server6.example.com:/var/pub
service ntpd restart
/var/log/secure

10. List VMs
#virsh list
yum install firefox4
ip masqu
#yum install [package name]

11. Remove a package with yum
tar fzj
man search :/repository
ssh-copy-id root@server6.example.com
#yum remove [package name]

12. Get information about a package named firefox4
ln -s /pub /var/www/html/pub
/etc/services
nautilus
yum info firefox4

13. Process packets being forwarded through the system
#yum info [package name]
system-config-date
rpm --import [public key location]
IPtables forward chain

14. Create a tar ball with gzip compression of the home dir
yum install firefox4
# ls -l /usr/share/doc | grep httpd
/etc/yum.repos.d
$ tar czvf home.tar.gz /home

15. Search for command in the doc directory
GUI menu system/administratrion/firewall
rpm -qc httpd
# ls -l /usr/share/doc | grep httpd
system-config-date

16. Delete a rule from iptables
#yum groupinstall "group name"
#iptables -D INPUT -p tcp --dport 21 -j accpet
rsync /home/test1.html root@server6.example.com:/var/pub
#iptables -I INPUT -p tcp --dport 21 -j Accept

17. Program to analyze standard log files and send a summary email to root
logwatch
nautilus
yum install tigervnc-server
palimpsest

18. Extract /tmp/etc.tar.gz to /etc
tar xvzf /tmp/etc.tar.gz /etc
system-config-firewall tui
# virsh create /etc/libvert/qemu/vm_file_name.xml
#iptables -F

19. Configuration file for system logs
#rpm -uvh [package name]
/etc/rsyslog.conf
#iptables -L
tar cxtv

20. Persist the web server on boot
#uname -r
ln -s /pub /var/www/html/pub
chkconfig httpd on
# yum

21. Documentation about sysconfig network scripts
updating the kernel
tar fzj
#yum remove [package name]
/usr/share/doc/initscripts-*/sysconfig.txt

22. Get a list of package groups from yum
/etc/services
#yum grouplist
#yum
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

23. Start a VM
# virsh create /etc/libvert/qemu/vm_file_name.xml
# renice -10 proc-id
# vi /etc/inittab change - id:3:initdefault:
# ls -l /usr/share/doc | grep httpd

24. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
MailTo=student@server6.example.com
yum remove firefox4
rpm --import [public key location]
*.debug /var/log/debug.log service rsyslog restart

25. tar options for file name - gzip - and bzip2
rhn_register
tar fzj
#iptables -L
rsync -PHR /home/test1.html root@server6.example.com:/var/pub

26. Install star
# vi /etc/inittab change - id:3:initdefault:
# yum
/var/log/maillog
system-config-firewall tui

27. Uninstall a package group with yum
/etc/hosts
ssh-keygen
#yum groupremove "group name"
/var/log/cron

28. Gets kernel version and release number
# virsh create /etc/libvert/qemu/vm_file_name.xml
#uname -r
man search :/repository
/etc/sysconfig/resolv.conf

29. Query information files with RPM
yum provides
$ tar xzvf home.tar.gz /home
#rpm -qi [package name]
# ls -l /usr/share/doc | grep httpd

30. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
yum provides
service vncserver restart chkconfig vncserver on
chkconfig httpd on

31. Query all documentation with RPM
#iptables -L
system-config-date
man search :/repository
#rpm -qad [package name]

32. Local host file (contains hostname). Can contain local system DNS.
ssh-keygen
tar xvzf /tmp/etc.tar.gz /etc
/etc/hosts
# yum

33. Restart the ntpd service
# renice -10 proc-id
service ntpd restart
#iptables -L
vsftpd restart

34. original DNS config file - still used
tar cxtv
/var/log/maillog
/var/log/secure
/etc/sysconfig/resolv.conf

35. Location of repo's
chkconfig vsftpd on
chkconfig httpd on
tar cxtv
/etc/yum.repos.d/

36. Determine which package provides SSH
yum provides "*/sbin/sshd"
#iptables -I INPUT -p tcp --dport 21 -j Accept
#yum info [package name]
tar cxtv

37. Kill a VM
cat >> some_file << _EOF
rpm -q pkg.rpm --scripts
yum provides
#virsh destroy domain-id

38. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
2>&1
/etc/sysconfig/network
/var/log/secure
rsync /home root@server6.example.com:/tmp

39. Search for a package with firefox in the description
cp /home/test1.html /var/www/html/test1.html
yum search firefox
IPtables output chain
2>&1

40. Email related messages log
service sshd restart
/var/log/maillog
yum search firefox
# star -x -f=home.star

41. Copy a public ssh key to server6
/var/log/secure
ssh-copy-id root@server6.example.com
$ tar czvf home.tar.gz /home
yum install tigervnc-server

42. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
Fully Qualified Domain Name
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
rsync -a /home/test1.html root@server6.example.com:/var/pub
insert as opposed to append

43. Primary configuration of ssh
ip masqu
rpm -qc httpd
/etc/ssh/sshd_config
*.debug /var/log/debug.log service rsyslog restart

44. tar options for create - extract - test - and verbose
ln -s /pub /var/www/html/pub
rhn_register
tar cxtv
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

45. Get more information on a package availale through yum
#yum info [package name]
#yum groupinstall "group name"
# cat /var/log/messages | grep [Ff]ailed | less
rpm -qp pkg.rpm

46. Acting as a router with forwarding
#rpm -qa | grep [package name]
#ip addr show
ip masqu
Fully Qualified Domain Name

47. Extract a star compressed file
yum install firefox4
# star -x -f=home.star
#iptables -I INPUT -p tcp --dport 21 -j Accept
#yum

48. Disks available for partitions
vsftpd
/dev
updating the kernel
#rpm -qi [package name]

49. Stores filewall rules for the system.
$ tar xzvf home.tar.gz /home
palimpsest
/etc/sysconfig/iptables
# virsh create /etc/libvert/qemu/vm_file_name.xml

50. Search for a package within all packages
/etc/rsyslog.conf
#rpm -qa | grep [package name]
/etc/ssh/sshd_config
tar fzj

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Can you answer 50 questions in 15 minutes?

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RHCSA Commands

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