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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 select a different device without having to restart parted - use the ____ command . Then - you can view its partition table or configure it.
yum -y update
--import file
select (followed by the device name such as /dev/hdb)
ls -Z
2. what port needs to be open to access ftp?
-K
dd if=./diskboot.img of=/dev/sdc
port 21
dumpe2fs
3. The rpm ____ option installs the package - if it isn't already installed.
yum update kernel
setsebool -P htttpd.enable.homedirs 1
-i
chmod 705
4. rpm ____ verifies the installed zip rpm against the rpm database
DocumentRoot
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
rpm -V zip
yum install httpd
5. 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
select (followed by the device name such as /dev/hdb)
fdisk
chkconfig httpd on
6. 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
telnetd : ALL EXCEPT 192.168.1.10
NameVirtualHost
chkconfig httpd on
system-config-firewall
7. 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:
rpm -Va
NameVirtualHost
(rpm -q)p file (for rpmfile name)
showmount -e
8. 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
/etc/httpd/conf/
parted; mklabel k
/etc/vsftpd
chcon -R -t httpd_sys_content_t /home/michael/public_html
9. If you want to add an iptables command to forward TCP port 80 traffic to TCP port 3128 - you would use the following:
yum -y update
LVM
elinks
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
10. 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
chmod 705
showmount -e
ServerTokens
ls -Z
11. Virtual Host Configuration: Creates an error log; the location is based on the DocumentRoot.
--import file
dumpe2fs
ErrorLog
/etc/vsftpd
12. How do you restart the apache web server?
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
parted; check x
setsebool -P squid_connect_any 1
/etc/init.d/httpd restart
13. The most straightforward way to make sure Apache starts in bootlevels 3 and 5
resize2fs /dev/myvg/homevol
chkconfig --level 35 httpd on
fdisk -l
yum install vsftpd
14. For http - if you implement 'UserDir public_html' - you need to also ____ /home/michael/public_html if you want /home/michael/public_html accessible
ServerName
chmod 705
htpasswd -c /etc/httpd/webpass e
chkconfig httpd on
15. rpm options include rpm -q [package name] or rpm -qf [path/file] or rmp -q____
(rpm -q)p file (for rpmfile name)
iptables -F
/etc/init.d/httpd start
ServerTokens
16. rpm ____ to import the rpm key for integrity checking
select (followed by the device name such as /dev/hdb)
--import file
lvdisplay -D /dev/rootvg/tmplv
var/www/html
17. What service is allowed through the default firewall?
chkconfig --list httpd
ssh
service vsftpd status
ErrorLog
18. Virtual Host Configuration: Sets a root directory for the virtual host.
DocumentRoot
chkconfig httpd on
resize2fs /dev/myvg/homevol
setup
19. How to install vsftpd?
5
rpm -V
yum install vsftpd
telnetd : ALL EXCEPT 192.168.1.10
20. The main Squid configuration file is ____/squid.conf
rpm -V
NameVirtualHost
LVM
/etc/squid/
21. 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.
/boot
dd if=./diskboot.img of=/dev/sdc
rpm -V
setup
22. Create a usb boot disk if the usb stick is /dev/sdc and the file you need is in your present directory
system-config-firewall
dd if=./diskboot.img of=/dev/sdc
mke2fs
parted; mklabel k
23. Apache supports security by specifying active ports through the Listen and ____ directives.
-l
Yes
NameVirtualHost
5
24. 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
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
iptables
parted; mklabel k
mke2fs
25. output from ____ is: Disk /dev/cciss/c0d0: 36.4 GB - 36414750720 bytes... plus listing of partitions - for each physical drive
fdisk -l
yum clean all
lvextend -L4G /dev/rootvg/tmplv
chkconfig httpd on
26. 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:
showmount -a
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
elinks
grep '[.*]' server1.repo
27. 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)
(rpm -q)p file (for rpmfile name)
yum install httpd
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
CustomLog
28. To verify integrity of an rpm package - ____/rpm-gpg/RPM-GPG-KEY-redhat-release
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
ssh
-l
-i
29. What is the first post installation step?
resize2fs
First boot process
/etc/httpd/conf/
setsebool -P htttpd.enable.homedirs 1
30. How to start the vsftp service?
/etc/init.d/vsftpd start
rpm -V
setsebool -P squid_connect_any 1
resize2fs /dev/myvg/homevol
31. If in doubt about package names - you can find them in the ...
fdisk -l
yum install httpd
/etc/lvmtab
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)
32. When an rpm install fails for xxxx because the same version is already apparently installed - run ____ to just install it all again
yum install mod_ssl squid
rpm -e zip
rpm -ivh --replacepkgs xxxx*
/boot
33. ______ will show me volume info including vg - size - etc of /dev/rootvg/tmplv
yum install httpd
lvdisplay -D /dev/rootvg/tmplv
5
select (followed by the device name such as /dev/hdb)
34. You can use the ____ tool after installation to add any package groups that you missed.
pirut
rpm -e zip
--import file
htpasswd -c /etc/httpd/webpass e
35. ___ http://devmon.dev.schwab.com/index.html will make a local copy of the index.html file from devmon
wget (http://devmon.dev.schwab.com/index.html)
/etc/init.d/httpd restart
showmount -e
parted; mklabel k
36. rpm ____ to install kernel updates
-i (do not use -U or -F!)
/boot
rpm -Va
(rpm -q)p file (for rpmfile name)
37. Create the basic cache directories in /var/spool/squid with the following command:
squid -z
/ (root) - /boot and linux swap
rpm -V
fdisk -l
38. ____ prints superblock and block group information.
parted; check x
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
squid -z
dumpe2fs
39. To install both mod_ssl and squid packages
/etc/squid/
rpm -Va
yum install httpd
yum install mod_ssl squid
40. _____ will change the size of /dev/rootvg/tmplv to 4 gig
dd if=./diskboot.img of=/dev/sdc
chmod 705
showmount -e
lvextend -L4G /dev/rootvg/tmplv
41. Virtual Host Configuration: Assigns an e-mail address for the specified virtual host.
First boot process
AllowOverride
ServerAdmin
/etc/squid/
42. Tthe file that might contain: oldvg - rootvg - etc.
/etc/lvmtab
setup
nfs
DocumentRoot
43. How to disable the firewall on the current system?
chmod 705
iptables -F
dumpe2fs
nfs
44. What is the standard directory for file sharing with vsFTP?
parted; mklabel k
var/ftp/pub
/var/ftp/pub
chmod 701
45. To check status of ftp daemon
service vsftpd status
parted; check x
/etc/init.d/vsftpd start
squid -z
46. What command starts the same menu as the text-mode First Boot process?
rpm -Va
setup
service vsftpd status
chmod 701
47. httpd ___ to update the httpd package - automatically answering yes to all the questions
wget (http://devmon.dev.schwab.com/index.html)
chmod 701
yum -y update
showmount -a
48. rpm option to show me the package files
ErrorLog
resize2fs /dev/myvg/homevol
-l
DocumentRoot
49. 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.
resize2fs
iptables -F
yum -y update
rpm -ivh --replacepkgs xxxx*
50. List sboth the client hostname or IP address and mounted directory in host:dir format. This info should not be considered reliable.
LVM
/etc/lvmtab
showmount -a
/etc/vsftpd