Test your basic knowledge |

RHCSA Commands

Subjects : certifications, it-skills, rhcsa

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. Stores IPtables rules (filter) chains - input forward output are persistant
rsync /home root@server6.example.com:/tmp
#rpm -qi [package name]
updating the kernel
/etc/sysconfig/iptables

2. Determine which package provides SSH
/var/lib/rpm
yum provides "*/sbin/sshd"
GUI menu system/administratrion/firewall
#rpm -qac [package name]

3. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
rpm -ql vsftpd
# vi /etc/inittab change - id:3:initdefault:
rpm --import [public key location]

4. All messages sent at info priority or higher
/etc/rsyslog.conf
/var/log/messages
/var/log/cron
vsftpd restart

5. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
.spec
yum provides "*/sbin/sshd"
rpm localinstall pkg.rpm --nogpgcheck
vsftpd restart

6. Remote copy /home/test1.html to the /var/pub directory on server6 with progress - preserving hard links - and using relative path names
#ip addr show
#virsh destroy domain-id
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
logwatch

7. Process packets coming into the system
IPtables input chain
rpm -qc httpd
# grep -i
.spec

8. Start vsftp service
#iptables -L
vsftpd restart
/usr/share/doc/initscripts-*/sysconfig.txt
#yum install [package name]

9. Get a list of package groups from yum
#yum grouplist
/etc/hosts
cat >> some_file << _EOF
#rpm -qad [package name]

10. Messages related to cron log
name-version-release.architecture.rpm
/var/log/cron
vncviewer -via student@server6 localhost:2
#iptables -I INPUT -p tcp --dport 21 -j Accept

11. List scripts that can be run after installation of pkg.rpm
rpm -qc httpd
# renice -10 proc-id
/etc/sysconfig/resolv.conf
rpm -q pkg.rpm --scripts

12. Backup a home directory on desktop6 to /tmp on server6
vncviewer -via student@server6 localhost:2
/etc/rsyslog.conf
rsync /home root@server6.example.com:/tmp
/etc/yum.repos.d

13. Grep with ignoring case
#yum groupremove "group name"
# grep -i
#iptables -F
/etc/hosts

14. fqdn
ssh-keygen
palimpsest
Fully Qualified Domain Name
rsync /home/test1.html root@server6.example.com:/var/pub

15. Redirect errors to std out
ssh-copy-id root@server6.example.com
2>&1
# star -xattr -H=exustar -c -f=home.star /home/
ssh-keygen

16. Generate SSH Keys
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
tar cxtv
ssh-keygen
cat >> some_file << _EOF

17. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
GUI menu system/administratrion/firewall
MailTo=student@server6.example.com
/var/www/html/

18. Documentation about sysconfig network scripts
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
vncviewer -via student@server6 localhost:2
yum info firefox4
/usr/share/doc/initscripts-*/sysconfig.txt

19. Install with RPM
/etc/ssh/sshd_config
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
updating the kernel
#rpm -ivh [package name]

20. Flush the firewall of all rules
/etc/sysconfig/resolv.conf
/var/log/maillog
#iptables -F
# cat /var/log/messages | grep [Ff]ailed | less

21. Kill a VM
yum list
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
#virsh destroy domain-id
Fully Qualified Domain Name

22. Extract a gzipped tar ball in your home directory
$ tar xzvf home.tar.gz /home
rsync /home/test1.html root@server6.example.com:/var/pub
IPtables forward chain
# renice -10 proc-id

23. original DNS config file - still used
/etc/sysconfig/resolv.conf
ln -s /pub /var/www/html/pub
# virsh create /etc/libvert/qemu/vm_file_name.xml
#yum

24. Install star
tar cxtv
rsync /home root@server6.example.com:/tmp
# yum
/etc/yum.repos.d/

25. Display packages that match the pathname
yum provides
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
#iptables -I INPUT -p tcp --dport 21 -j Accept
/var/log/secure

26. An example of searching through system logs with interpretation.
# cat /var/log/messages | grep [Ff]ailed | less
# virsh create /etc/libvert/qemu/vm_file_name.xml
name-version-release.architecture.rpm
#rpm -qac [package name]

27. Get more information on a package availale through yum
tar cxtv
rpm -q pkg.rpm --scripts
#yum info [package name]
system-config-date

28. tar options for create - extract - test - and verbose
/etc/yum.repos.d/
tar cxtv
yum provides
rsync /home/test1.html root@server6.example.com:/var/pub

29. Persist FTP on boot
rpm -qp pkg.rpm
chkconfig vsftpd on
insert as opposed to append
/etc/sysconfig/resolv.conf

30. Install a package named firefox4
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
# ls -l /usr/share/doc | grep httpd
/var/www/html/
yum install firefox4

31. Get information about a package named firefox4
#virsh destroy domain-id
tar czvf /tmp/etc.tar.gz /etc
#iptables -I INPUT -p tcp --dport 21 -j Accept
yum info firefox4

32. Connect with VNC viewer securely
vsftpd
Fully Qualified Domain Name
vncviewer -via student@server6 localhost:2
#yum groupinstall "group name"

33. Stores filewall rules for the system.
/etc/sysconfig/iptables
#iptables -D INPUT -p tcp --dport 21 -j accpet
#yum
ssh-copy-id root@server6.example.com

34. Remove a package with yum
tar fzj
#yum remove [package name]
#rpm -qi [package name]
tar xvzf /tmp/etc.tar.gz /etc

35. Process packets being forwarded through the system
#yum groupremove "group name"
tar fzj
#iptables -D INPUT -p tcp --dport 21 -j accpet
IPtables forward chain

36. System config firewall
2>&1
$ grep -v ^# /etc/nsswitch.conf
GUI menu system/administratrion/firewall
vsftpd

37. Start a VM
GUI menu system/administratrion/firewall
# virsh create /etc/libvert/qemu/vm_file_name.xml
logwatch
chkconfig httpd on

38. Location of repo's
/etc/yum.repos.d/
rpm -qc httpd
ssh-copy-id root@server6.example.com
# vi /etc/inittab change - id:3:initdefault:

39. Gets kernel version and release number
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
#uname -r
rsync /home root@server6.example.com:/tmp
vsftpd

40. Process packets coming out of the system
/etc/sysconfig/network
chkconfig vsftpd on
service ntpd restart
IPtables output chain

41. Program to analyze standard log files and send a summary email to root
#rpm -qad [package name]
#virsh list
insert as opposed to append
logwatch

42. Use lftp to connect
/etc/ssh/sshd_config
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
# virsh create /etc/libvert/qemu/vm_file_name.xml
rsync -PHR /home/test1.html root@server6.example.com:/var/pub

43. Disk Utility Command
# star -xattr -H=exustar -c -f=home.star /home/
nautilus
palimpsest
# virsh create /etc/libvert/qemu/vm_file_name.xml

44. Search for a package with firefox in the description
rpm -qp pkg.rpm
yum search firefox
/etc/sysconfig/iptables
vsftpd

45. Create a symbolic link to /pub on the FTP and name it pub
system-config-firewall tui
palimpsest
/etc/rsyslog.conf
ln -s /pub /var/www/html/pub

46. Import a public key
rpm --import [public key location]
#iptables -L
yum update
tar xvzf /tmp/etc.tar.gz /etc

47. Local host file (contains hostname). Can contain local system DNS.
/var/log/messages
rpm -qp pkg.rpm
/etc/hosts
tar czvf /tmp/etc.tar.gz /etc

48. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
/etc/sysconfig/iptables
vncviewer -via student@server6 localhost:2
/etc/sysconfig/iptables
insert as opposed to append

49. Install the star compression tool create an archive with the star tool.
# star -xattr -H=exustar -c -f=home.star /home/
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
rpm -ql vsftpd
#virsh destroy domain-id

50. Rpm upgrade package u upgrade v verbose h hash
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
#rpm -uvh [package name]
# grep -i
chkconfig httpd on