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Test your basic knowledge |
Redhat Linux Administration
Start Test
Study First
Subject
:
it-skills
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. 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
rpm -V zip
rpm -V pam
ls -Z
AllowOverride
2. Create a disk label for the partition table called k
5
/boot
setsebool -P squid_connect_any 1
arted; mklabel k
3. ____ prints superblock and block group information.
yum -y update httpd
pirut
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
dumpe2fs
4. To select a different device without having to restart parted - use the ____ command . Then - you can view its partition table or configure it.
parted; check x
select (followed by the device name such as /dev/hdb)
showmount -e
ServerTokens OS from http.conf
5. The rpm ____ option installs the package - if it isn't already installed.
-i
ServerAdmin
setsebool -P squid_connect_any 1
5
6. ____.com - ____.net - and ____.org domains are generic domain names that can't be assigned on the Internet. You can therefore use any of these domain names on your private network.
-i
parted; check x
fdisk -l
example
7. This line placed in /etc/hosts.deny denies all services except TFTP to computers in the example.org domain
ServerName
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
AllowOverride
squid -z
8. Virtual Host Configuration: Assigns an e-mail address for the specified virtual host.
ServerAdmin
service vsftpd status
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
chmod 701
9. rpm ____ verifies the installed zip rpm against the rpm database
ServerTokens OS from http.conf
rpm -V zip
NameVirtualHost
rpm -V pam
10. 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:
/etc/squid/
showmount -e
grep "[.*]" server1.repo
LVM
11. when an rpm install fails for xxxx because the same version is already apparently installed - run ____ to just install it all again
-K
htpasswd -c /etc/httpd/webpass e
chmod 705
rpm -ivh --replacepkgs xxxx*
12. 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
iptables
DocumentRoot
-K
rpm -V
13. It's much more difficult and much more time-consuming to revise partitions with utilities such as ____ or parted after RHEL is installed.
NameVirtualHost
htpasswd -c /etc/httpd/webpass e
fdisk -l
fdisk
14. rpm options include rpm -q [package name] or rpm -qf [path/file] or rmp -q____
dumpe2fs
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
(rpm -q)p file (for rpmfile name)
select (followed by the device name such as /dev/hdb)
15. The file that might contain: oldvg - rootvg - etc.
select (followed by the device name such as /dev/hdb)
lvdisplay -D /dev/rootvg/tmplv
/etc/lvmtab
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
16. rpm ____ [name of package] to verify the package - once you have manually imported the key
/etc/lvmtab
-K
DocumentRoot
-i
17. 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 - and PHP. Sharing this
ServerTokens OS from http.conf
resize2fs /dev/myvg/homevol
chkconfig --level 35 httpd on
yum install httpd
18. 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
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
e2fsadm
lvextend -L4G /dev/rootvg/tmplv
19. output from ____ is: Disk /dev/cciss/c0d0: 36.4 GB - 36414750720 bytes... plus listing of partitions - for each physical drive
arted; mklabel k
nfs
lvextend -L4G /dev/rootvg/tmplv
fdisk -l
20. 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
lvextend -L4G /dev/rootvg/tmplv
setsebool -P squid_connect_any 1
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
ok
21. ______ will show me volume info including vg - size - etc of /dev/rootvg/tmplv
tune2fs
-i (do not use -U or -F!)
-i
lvdisplay -D /dev/rootvg/tmplv
22. 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
htpasswd -c /etc/httpd/webpass e
rpm -V
chcon -R -t httpd_sys_content_t /home/michael/public_html
rpm -Va
23. ___ http://devmon.dev.schwab.com/index.html will make a local copy of the index.html file from devmon
grep "[.*]" server1.repo
ls -Z
wget (http://devmon.dev.schwab.com/index.html)
nfs
24. 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 ____
mke2fs
ls -Z
elinks
arted; mklabel k
25. ___________ can be on a RAID device
bootable partitions
service vsftpd status
-K
lvextend -L4G /dev/rootvg/tmplv
26. ___ to update the httpd package - automatically answering yes to all the questions
yum -y update httpd
resize2fs
yum update kernel
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
27. after you edit /etc/exports - run service ___ stop...
-l
nfs
ServerName
yum install mod_ssl squid
28. You ran "e2label /dev/sda" and got "bad magic number" Why?
rpm -V
DocumentRoot
filesystem type is not ext2 or ext3
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
29. 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.
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
ls -Z
hkconfig --list httpd
rpm -V
30. List sboth the client hostname or IP address and mounted directory in host:dir format. This info should not be considered reliable.
iptables
showmount -a
parted; check x
example
31. create the basic cache directories in /var/spool/squid with the following command:
fdisk -l
squid -z
elinks
rpm -V zip
32. use parted to display disk geometry for /dev/hda and end up in shell
arted; mklabel k
resize2fs /dev/myvg/homevol
grep "[.*]" server1.repo
parted /dev/hda print
33. rpm ____ verifies all installed rpms against the rpm database
ServerTokens OS from http.conf
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
rpm -Va
-K
34. ____ is used to modify file system parameters
ErrorLog
rpm -V pam
ls -Z
tune2fs
35. after extending file system "homevol" - unmount it and then run _____ to make the filesystem size match the new larger volume.
resize2fs /dev/myvg/homevol
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
rpm -Va
arted; mklabel k
36. for http - if you implement "UserDir public_html" - you need to also ____ /home/michael/public_html if you want /home/michael/public_html accessible
chmod 705
NameVirtualHost
ok
CustomLog
37. The simplest way to install Apache
LVM
ServerName
yum install httpd
-l
38. Run the ____ command to find the device associated with the USB key.
fdisk -l
-i (do not use -U or -F!)
/etc/lvmtab
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
39. If you want to add an iptables command to forward TCP port 80 traffic to TCP port 3128 - you would use the following:
telnetd : ALL EXCEPT 192.168.1.10
ServerTokens OS from http.conf
LVM
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
40. ;'___ /var/www' will tell you the ACL settings of /var/www
fdisk -l
example
ls -Z
yum install httpd
41. You can use the ____ tool after installation to add any package groups that you missed.
pirut
chkconfig --level 35 httpd on
-i
service vsftpd status
42. ____ can expand and shrink ext2 and ext3 file systems
ok
resize2fs
arted; mklabel k
/boot
43. Perform a simple check of the file system. minor-num is x.
/etc/lvmtab
parted; check x
-i
elinks
44. Virtual Host Configuration: Specifies an IP address for multiple virtual hosts.
wget (http://devmon.dev.schwab.com/index.html)
yum install httpd
NameVirtualHost
chmod 701
45. The main Squid configuration file is ____/squid.conf
/etc/squid/
NameVirtualHost
htpasswd -c /etc/httpd/webpass e
setsebool -P htttpd.enable.homedirs 1
46. create a usb boot disk if the usb stick is /dev/sdc and the file you need is in your present directory
dd if=./diskboot.img of=/dev/sdc
iptables
yum update kernel
--import file
47. Virtual Host Configuration: Sets a root directory for the virtual host.
DocumentRoot
service vsftpd status
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
yum clean all
48. logical partitions on a hard drive always start with number ____; on the first PATA/IDE hard drive on a PC - that is hda____.
5
ok
chmod 701
lvdisplay -D /dev/rootvg/tmplv
49. 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)
CustomLog
hkconfig --list httpd
tune2fs
nfs
50. This line: in /etc/hosts.allow: telnetd : 172.16.72.0/255.255.254.0 is ____
chcon -R -t httpd_sys_content_t /home/michael/public_html
-l
fdisk -l
ok