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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. 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.
lvextend -L4G /dev/rootvg/tmplv
iptables -F
showmount -e
rpm -e zip
2. 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:
grep '[.*]' server1.repo
htpasswd -c /etc/httpd/webpass e
rpm -e zip
-i (do not use -U or -F!)
3. How to disable the firewall on the current system?
-i (do not use -U or -F!)
/etc/init.d/vsftpd start
(rpm -q)p file (for rpmfile name)
iptables -F
4. Are SELinux and iptables-based firewalls are enabled by default?
NameVirtualHost
-i (do not use -U or -F!)
Yes
pirut
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)
telnetd : ALL EXCEPT 192.168.1.10
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
CustomLog
/etc/init.d/httpd start
6. 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 ____
NameVirtualHost
rpm -e zip
fdisk -l
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)
7. How to start apache service?
--import file
ServerAdmin
NameVirtualHost
/etc/init.d/httpd start
8. What parts of rhel6 should be installed to separate volumes?
/ (root) - /boot and linux swap
htpasswd -c /etc/httpd/webpass e
e2fsadm
ServerName
9. Use parted to display disk geometry for /dev/hda and end up in shell
iptables -F
parted /dev/hda print
filesystem type is not ext2 or ext3
chkconfig --list httpd
10. 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
yum update kernel
service vsftpd status
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
rpm -qc
11. To list under which run levels the web service will start
Yes
chkconfig --list httpd
var/www/html
nfs
12. What command starts the same menu as the text-mode First Boot process?
ServerAdmin
setsebool -P htttpd.enable.homedirs 1
setup
mke2fs
13. Virtual Host Configuration: Sets a root directory for the virtual host.
rpm -Va
NameVirtualHost
CustomLog
DocumentRoot
14. Create a usb boot disk if the usb stick is /dev/sdc and the file you need is in your present directory
select (followed by the device name such as /dev/hdb)
dd if=./diskboot.img of=/dev/sdc
ServerAdmin
system-config-firewall
15. output from ____ is: Disk /dev/cciss/c0d0: 36.4 GB - 36414750720 bytes... plus listing of partitions - for each physical drive
fdisk -l
iptables
CustomLog
-i
16. 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:
/etc/vsftpd
select (followed by the device name such as /dev/hdb)
ServerAdmin
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
17. 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
18. Create a disk label for the partition table called k
lvdisplay -D /dev/rootvg/tmplv
lvextend -L4G /dev/rootvg/tmplv
yum install httpd
parted; mklabel k
19. What service is allowed through the default firewall?
/etc/lvmtab
yum install mod_ssl squid
ssh
Yes
20. Where is the main apache data directory?
setsebool -P htttpd.enable.homedirs 1
var/www/html
/boot
DocumentRoot
21. rpm ____ to install kernel updates
First boot process
iptables -F
-i (do not use -U or -F!)
/var/ftp/pub
22. '____ /var/www' will tell you the ACL settings of /var/www
yum install httpd
setup
ls -Z
5
23. The main Squid configuration file is ____/squid.conf
DocumentRoot
chkconfig --list httpd
parted; mklabel k
/etc/squid/
24. When an rpm install fails for xxxx because the same version is already apparently installed - run ____ to just install it all again
parted; check x
chkconfig vsftpd on
rpm -ivh --replacepkgs xxxx*
ServerName
25. What is the first post installation step?
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
iptables
CustomLog
First boot process
26. 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
port 21
ServerTokens
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
/boot
27. Virtual Host Configuration: Names the URL for the virtual host.
parted; mklabel k
/etc/vsftpd
dumpe2fs
ServerName
28. SELinux must be configured to Allow HTTPD To Read Home Directories. (Alternatively - activate the httpd_enable_homedirs boolean with the __ command.)
rpm -V
setup
setsebool -P htttpd.enable.homedirs 1
tune2fs
29. After extending file system 'homevol' - unmount it and then run _____ to make the filesystem size match the new larger volume.
telnetd : ALL EXCEPT 192.168.1.10
yum update kernel
resize2fs /dev/myvg/homevol
port 21
30. ______ will show me volume info including vg - size - etc of /dev/rootvg/tmplv
lvdisplay -D /dev/rootvg/tmplv
dd if=./diskboot.img of=/dev/sdc
-l
ls -Z
31. You can use the ____ tool after installation to add any package groups that you missed.
ServerName
rpm -ivh --replacepkgs xxxx*
/etc/vsftpd
pirut
32. How to install vsftpd?
var/ftp/pub
yum install vsftpd
/boot
grep '[.*]' server1.repo
33. The simplest way to install Apache
htpasswd -c /etc/httpd/webpass e
yum install httpd
ls -Z
setup
34. rpm ____ [name of package] to verify the package - once you have manually imported the key
rpm -ivh --replacepkgs xxxx*
/etc/lvmtab
htpasswd -c /etc/httpd/webpass e
-K
35. I just finished editing my /etc/yum.repos.d/*repo file and want yum to use the new info - so I run ____
Yes
yum clean all
setsebool -P squid_connect_any 1
fdisk -l
36. rpm options include rpm -q [package name] or rpm -qf [path/file] or rmp -q____
ServerAdmin
yum install mod_ssl squid
parted; mklabel k
(rpm -q)p file (for rpmfile name)
37. It's much more difficult and much more time-consuming to revise partitions with utilities such as ____ or parted after RHEL is installed.
setsebool -P htttpd.enable.homedirs 1
fdisk
/etc/vsftpd
var/www/html
38. 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
ServerName
iptables
/etc/lvmtab
var/ftp/pub
39. Logical partitions on a hard drive always start with number ____; on the first PATA/IDE hard drive on a PC - that is hda____.
parted /dev/hda print
-l
setsebool -P squid_connect_any 1
5
40. 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
chcon -R -t httpd_sys_content_t /home/michael/public_html
(rpm -q)p file (for rpmfile name)
wget (http://devmon.dev.schwab.com/index.html)
/etc/init.d/vsftpd start
41. OS from http.conf - 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 - an
resize2fs /dev/myvg/homevol
ServerTokens
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
setsebool -P htttpd.enable.homedirs 1
42. How to start the vsftp service automatically on boot?
tune2fs
chkconfig --level 35 httpd on
chkconfig vsftpd on
/etc/init.d/vsftpd start
43. The rpm ____ option installs the package - if it isn't already installed.
-i
rpm -qc
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
/var/ftp/pub
44. ____ can expand and shrink ext2 and ext3 file systems
/etc/httpd/conf/
resize2fs
e2fsadm
--import file
45. Create the basic cache directories in /var/spool/squid with the following command:
squid -z
showmount -e
DocumentRoot
dd if=./diskboot.img of=/dev/sdc
46. Virtual Host Configuration: Assigns an e-mail address for the specified virtual host.
showmount -a
nfs
parted; check x
ServerAdmin
47. 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
chkconfig --list httpd
-l
(rpm -q)p file (for rpmfile name)
setsebool -P squid_connect_any 1
48. If rhel6 is in the /media directory - where is the XML file on that DVD with a database of packages and package groups?
/media/repodata
Yes
lvextend -L4G /dev/rootvg/tmplv
system-config-firewall
49. How do you restart the apache web server?
yum install mod_ssl squid
rpm -qc
/etc/init.d/httpd restart
NameVirtualHost
50. If you want to add an iptables command to forward TCP port 80 traffic to TCP port 3128 - you would use the following:
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
nfs
/var/ftp/pub
tune2fs