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Test your basic knowledge |
RHCE: Red Hat Certified Engineer
Start Test
Study First
Subjects
:
certifications
,
it-skills
,
rhce
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. To check status of ftp daemon
5
pirut
service vsftpd status
chkconfig httpd on
2. If rhel6 is in the /media directory - where is the XML file on that DVD with a database of packages and package groups?
filesystem type is not ext2 or ext3
/media/repodata
chkconfig --list httpd
(rpm -q)p file (for rpmfile name)
3. Perform a simple check of the file system. minor-num is x.
/etc/vsftpd
rpm -e zip
chkconfig --list httpd
parted; check x
4. If you want to add an iptables command to forward TCP port 80 traffic to TCP port 3128 - you would use the following:
squid -z
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
yum install httpd
comps.xml (comps.xml file in the /usr/share/comps/i386 directory - -- or Web Server package group - as documented on the first installation CD in the Server/repodatata/comps-rhel5-server-core.xml file)
5. I ran 'e2label /dev/sda' and got 'bad magic number' Why?
chkconfig vsftpd on
yum install vsftpd
filesystem type is not ext2 or ext3
-i
6. Create the basic cache directories in /var/spool/squid with the following command:
--import file
rpm -ivh --replacepkgs xxxx*
yum -y update
squid -z
7. The simplest way to install Apache
/media/repodata
showmount -e
chkconfig httpd on
yum install httpd
8. 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:
mke2fs
/etc/squid/
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
-i
9. 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:
elinks
NameVirtualHost
telnetd : ALL EXCEPT 192.168.1.10
htpasswd -c /etc/httpd/webpass e
10. To select a different device without having to restart parted - use the ____ command . Then - you can view its partition table or configure it.
select (followed by the device name such as /dev/hdb)
parted /dev/hda print
setsebool -P squid_connect_any 1
LVM
11. Virtual Host Configuration: Sets a root directory for the virtual host.
DocumentRoot
/etc/init.d/vsftpd start
/etc/vsftpd
chkconfig --level 35 httpd on
12. If in doubt about package names - you can find them in the ...
LVM
comps.xml (comps.xml file in the /usr/share/comps/i386 directory - -- or Web Server package group - as documented on the first installation CD in the Server/repodatata/comps-rhel5-server-core.xml file)
pirut
/var/ftp/pub
13. rpm ____ to install kernel updates
chkconfig httpd on
yum install vsftpd
--import file
-i (do not use -U or -F!)
14. 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.
LVM
iptables -F
parted; mklabel k
rpm -V
15. Use grep to count how many repositories have been configured in the file server1.repo
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
16. Where is the config dir for vsftpd?
lvdisplay -D /dev/rootvg/tmplv
yum install httpd
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
/etc/vsftpd
17. I just ran rpm -ivh zip-2.3-8.i386.rpm .. whooops - now I don't want this on my system so to get it off via rpm I type ____
rpm -e zip
setup
CustomLog
setsebool -P htttpd.enable.homedirs 1
18. The most straightforward way to make sure Apache starts in bootlevels 3 and 5
/etc/squid/
fdisk -l
chkconfig --level 35 httpd on
port 21
19. Create a disk label for the partition table called k
LVM
parted; mklabel k
rpm -e zip
-i (do not use -U or -F!)
20. ____ can expand and shrink ext2 and ext3 file systems
resize2fs
resize2fs /dev/myvg/homevol
ssh
grep '[.*]' server1.repo
21. How do you restart the apache web server?
parted; check x
(rpm -q)p file (for rpmfile name)
/etc/init.d/httpd restart
fdisk -l
22. Where is the vsftp pub dir?
mke2fs
chcon -R -t httpd_sys_content_t /home/michael/public_html
yum install httpd
/var/ftp/pub
23. For http - if you implement 'UserDir public_html' - you need to also ____ /home/michael if you want /home/michael/public_html accessible
AllowOverride
parted /dev/hda print
chmod 701
/etc/squid/
24. what port needs to be open to access ftp?
port 21
Yes
CustomLog
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
25. Apache supports security by specifying active ports through the Listen and ____ directives.
-K
service vsftpd status
NameVirtualHost
chmod 705
26. 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
(rpm -q)p file (for rpmfile name)
iptables
/etc/lvmtab
parted; check x
27. SELinux must be configured to Allow HTTPD To Read Home Directories. (Alternatively - activate the httpd_enable_homedirs boolean with the __ command.)
/etc/httpd/conf/
/media/repodata
setsebool -P htttpd.enable.homedirs 1
--import file
28. Create a usb boot disk if the usb stick is /dev/sdc and the file you need is in your present directory
/var/ftp/pub
dd if=./diskboot.img of=/dev/sdc
NameVirtualHost
/etc/init.d/httpd start
29. To list under which run levels the web service will start
rpm -qc
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
wget (http://devmon.dev.schwab.com/index.html)
chkconfig --list httpd
30. Tthe file that might contain: oldvg - rootvg - etc.
comps.xml (comps.xml file in the /usr/share/comps/i386 directory - -- or Web Server package group - as documented on the first installation CD in the Server/repodatata/comps-rhel5-server-core.xml file)
showmount -e
wget (http://devmon.dev.schwab.com/index.html)
/etc/lvmtab
31. 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
-l
ls -Z
parted; mklabel k
chcon -R -t httpd_sys_content_t /home/michael/public_html
32. How to start apache service?
ServerName
/etc/init.d/httpd start
parted /dev/hda print
CustomLog
33. rpm ____ to import the rpm key for integrity checking
chkconfig --list httpd
/etc/vsftpd
--import file
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
34. The main Squid configuration file is ____/squid.conf
chcon -R -t httpd_sys_content_t /home/michael/public_html
/etc/squid/
/etc/init.d/vsftpd start
lvdisplay -D /dev/rootvg/tmplv
35. Are SELinux and iptables-based firewalls are enabled by default?
chmod 701
chmod 705
Yes
ServerAdmin
36. The rpm ____ option installs the package - if it isn't already installed.
chkconfig --list httpd
yum install httpd
-i
chkconfig --level 35 httpd on
37. I just finished editing my /etc/yum.repos.d/*repo file and want yum to use the new info - so I run ____
resize2fs
yum clean all
fdisk -l
/var/ftp/pub
38. How to disable the firewall on the current system?
chmod 705
iptables -F
AllowOverride
Yes
39. 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)
chkconfig --list httpd
chmod 705
yum install httpd
e2fsadm
40. When an rpm install fails for xxxx because the same version is already apparently installed - run ____ to just install it all again
ssh
rpm -ivh --replacepkgs xxxx*
chmod 705
parted; mklabel k
41. 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.
pirut
iptables -F
yum -y update
lvdisplay -D /dev/rootvg/tmplv
42. How to start the vsftp service automatically on boot?
5
ServerAdmin
chkconfig vsftpd on
parted; check x
43. You can use the ____ tool after installation to add any package groups that you missed.
ssh
5
pirut
ls -Z
44. After extending file system 'homevol' - unmount it and then run _____ to make the filesystem size match the new larger volume.
elinks
showmount -e
resize2fs /dev/myvg/homevol
rpm -qc
45. 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
filesystem type is not ext2 or ext3
setsebool -P squid_connect_any 1
rpm -V
iptables -F
46. Run the ____ command to find the device associated with the USB key.
Yes
rpm -ivh --replacepkgs xxxx*
resize2fs /dev/myvg/homevol
fdisk -l
47. 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
ls -Z
chmod 705
yum update kernel
CustomLog
48. What service is allowed through the default firewall?
filesystem type is not ext2 or ext3
chkconfig httpd on
rpm -Va
ssh
49. List sboth the client hostname or IP address and mounted directory in host:dir format. This info should not be considered reliable.
showmount -a
pirut
/etc/init.d/httpd start
chkconfig --list httpd
50. httpd ___ shows me what config files were installed when the httpd package was installed
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
dd if=./diskboot.img of=/dev/sdc
rpm -qc
/var/ftp/pub