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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. It's much more difficult and much more time-consuming to revise partitions with utilities such as ____ or parted after RHEL is installed.
squid -z
/etc/init.d/vsftpd start
grep '[.*]' server1.repo
fdisk
2. For http - if you implement 'UserDir public_html' - you need to also ____ /home/michael/public_html if you want /home/michael/public_html accessible
parted; mklabel k
chmod 705
chcon -R -t httpd_sys_content_t /home/michael/public_html
(rpm -q)p file (for rpmfile name)
3. This line placed in /etc/hosts.deny sends a customized error message for Telnet users on the crack.org domain saying sorry [insert client info] - access denied
chkconfig --level 35 httpd on
ssh
filesystem type is not ext2 or ext3
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
4. As you may not have access to the GUI during the Red Hat exams - you need to know how to use text-based browsers. The standard is ____
filesystem type is not ext2 or ext3
yum -y update
rpm -Va
elinks
5. 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.
showmount -a
dd if=./diskboot.img of=/dev/sdc
iptables -F
grep '[.*]' server1.repo
6. Logical partitions on a hard drive always start with number ____; on the first PATA/IDE hard drive on a PC - that is hda____.
5
-l
yum update kernel
pirut
7. what utility can be used to open port 80?
setsebool -P htttpd.enable.homedirs 1
chmod 705
LVM
system-config-firewall
8. To list under which run levels the web service will start
mke2fs
-K
chkconfig --list httpd
yum install vsftpd
9. What command starts the same menu as the text-mode First Boot process?
CustomLog
/etc/vsftpd
setup
Yes
10. pam ___ will tell me if any files in the pam package have changed since it was first installed
Yes
ServerName
fdisk -l
rpm -V
11. output from ____ is: Disk /dev/cciss/c0d0: 36.4 GB - 36414750720 bytes... plus listing of partitions - for each physical drive
ServerName
setsebool -P squid_connect_any 1
chmod 705
fdisk -l
12. Virtual Host Configuration: Assigns an e-mail address for the specified virtual host.
/boot
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
ServerAdmin
chmod 701
13. Where is the config dir for vsftpd?
chkconfig --list httpd
dd if=./diskboot.img of=/dev/sdc
/etc/vsftpd
ServerName
14. The main Squid configuration file is ____/squid.conf
--import file
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)
/etc/vsftpd
/etc/squid/
15. '____ /var/www' will tell you the ACL settings of /var/www
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)
setsebool -P squid_connect_any 1
ls -Z
(rpm -q)p file (for rpmfile name)
16. This line placed in /etc/hosts.deny denies all services except TFTP to computers in the example.org domain
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
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)
telnetd : ALL EXCEPT 192.168.1.10
ls -Z
17. What service is allowed through the default firewall?
chmod 701
showmount -a
/media/repodata
ssh
18. The simplest way to install Apache
rpm -e zip
DocumentRoot
yum install httpd
AllowOverride
19. To install both mod_ssl and squid packages
/etc/init.d/httpd start
yum install mod_ssl squid
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)
grep '[.*]' server1.repo
20. How to start apache service?
squid -z
/etc/init.d/httpd start
rpm -e zip
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
21. For http - if you implement 'UserDir public_html' - you need to also ____ /home/michael if you want /home/michael/public_html accessible
chmod 701
service vsftpd status
chcon -R -t httpd_sys_content_t /home/michael/public_html
Yes
22. What parts of rhel6 should be installed to separate volumes?
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
/etc/squid/
select (followed by the device name such as /dev/hdb)
/ (root) - /boot and linux swap
23. Virtual Host Configuration: Specifies an IP address for multiple virtual hosts.
setsebool -P htttpd.enable.homedirs 1
NameVirtualHost
mke2fs
ssh
24. 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
parted; mklabel k
-l
rpm -Va
telnetd : ALL EXCEPT 192.168.1.10
25. httpd ___ to update the httpd package - automatically answering yes to all the questions
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
iptables -F
yum -y update
/etc/vsftpd
26. After extending file system 'homevol' - unmount it and then run _____ to make the filesystem size match the new larger volume.
parted; check x
lvextend -L4G /dev/rootvg/tmplv
resize2fs /dev/myvg/homevol
showmount -e
27. List sboth the client hostname or IP address and mounted directory in host:dir format. This info should not be considered reliable.
yum install httpd
/etc/lvmtab
htpasswd -c /etc/httpd/webpass e
showmount -a
28. 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
chcon -R -t httpd_sys_content_t /home/michael/public_html
Yes
ServerTokens
-l
29. Where is the vsftp pub dir?
select (followed by the device name such as /dev/hdb)
(rpm -q)p file (for rpmfile name)
/var/ftp/pub
rpm -V
30. what port needs to be open to access ftp?
service vsftpd status
First boot process
port 21
grep '[.*]' server1.repo
31. SELinux must be configured to Allow HTTPD To Read Home Directories. (Alternatively - activate the httpd_enable_homedirs boolean with the __ command.)
yum update kernel
/etc/httpd/conf/
iptables -F
setsebool -P htttpd.enable.homedirs 1
32. ______ will show me volume info including vg - size - etc of /dev/rootvg/tmplv
-l
parted; mklabel k
iptables -F
lvdisplay -D /dev/rootvg/tmplv
33. After you edit /etc/exports - run service ___ stop...
nfs
chkconfig --list httpd
fdisk -l
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
34. What is the first post installation step?
Yes
First boot process
NameVirtualHost
-i
35. Create a disk label for the partition table called k
showmount -e
resize2fs
ErrorLog
parted; mklabel k
36. 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
CustomLog
iptables
/etc/vsftpd
fdisk -l
37. rpm ____ [name of package] to verify the package - once you have manually imported the key
select (followed by the device name such as /dev/hdb)
iptables -F
yum install httpd
-K
38. 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:
showmount -e
parted; check x
yum update kernel
htpasswd -c /etc/httpd/webpass e
39. Virtual Host Configuration: Creates an error log; the location is based on the DocumentRoot.
-i (do not use -U or -F!)
grep '[.*]' server1.repo
LVM
ErrorLog
40. You can use the ____ tool after installation to add any package groups that you missed.
/etc/init.d/httpd restart
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
rpm -qc
pirut
41. In httpd.conf - '____ None' disables any .htaccess files. Otherwise - .htaccess can allow others to administer your server - starting from the DocumentRoot directory. If .htaccess is in a subdirectory - such as /var/www/html/data/ - the additional di
AllowOverride
/media/repodata
-i
iptables -F
42. 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
/etc/init.d/vsftpd start
First boot process
/boot
/etc/httpd/conf/
43. 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)
select (followed by the device name such as /dev/hdb)
parted /dev/hda print
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
44. rpm ____ verifies all installed rpms against the rpm database
rpm -Va
yum -y update
-i (do not use -U or -F!)
dumpe2fs
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
iptables -F
-l
setsebool -P squid_connect_any 1
dd if=./diskboot.img of=/dev/sdc
46. Where to find the main apache config file?
yum -y update
/etc/httpd/conf/
rpm -V
(rpm -q)p file (for rpmfile name)
47. 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
yum update kernel
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
chcon -R -t httpd_sys_content_t /home/michael/public_html
--import file
48. If you want to add an iptables command to forward TCP port 80 traffic to TCP port 3128 - you would use the following:
lvextend -L4G /dev/rootvg/tmplv
showmount -e
dumpe2fs
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
49. rpm option to show me the package files
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
-l
ServerTokens
setsebool -P squid_connect_any 1
50. ____ is used for creating ext2 and ext3 file systems
chkconfig --level 35 httpd on
chmod 701
(rpm -q)p file (for rpmfile name)
mke2fs