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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. _____ will change the size of /dev/rootvg/tmplv to 4 gig
wget (http://devmon.dev.schwab.com/index.html)
yum clean all
lvextend -L4G /dev/rootvg/tmplv
fdisk -l
2. You can use the ____ tool after installation to add any package groups that you missed.
chkconfig --level 35 httpd on
dd if=./diskboot.img of=/dev/sdc
pirut
yum clean all
3. create the basic cache directories in /var/spool/squid with the following command:
showmount -a
AllowOverride
squid -z
parted; check x
4. for http - if you implement "UserDir public_html" - you need to also ____ /home/michael/public_html if you want /home/michael/public_html accessible
resize2fs /dev/myvg/homevol
fdisk -l
chmod 705
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
5. You just finished editing your /etc/yum.repos.d/*repo file and want yum to use the new info - so you run ____
elinks
LVM
mke2fs
yum clean all
6. Virtual Host Configuration: Sets a root directory for the virtual host.
DocumentRoot
fdisk -l
squid -z
-i
7. 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
yum install httpd
pirut
/boot
fdisk -l
8. The main Squid configuration file is ____/squid.conf
/etc/squid/
-i (do not use -U or -F!)
fdisk -l
telnetd : ALL EXCEPT 192.168.1.10
9. 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
chmod 705
bootable partitions
AllowOverride
wget (http://devmon.dev.schwab.com/index.html)
10. 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
tune2fs
bootable partitions
chcon -R -t httpd_sys_content_t /home/michael/public_html
setsebool -P squid_connect_any 1
11. This line: in /etc/hosts.allow: telnetd : 172.16.72.0/255.255.254.0 is ____
ServerTokens OS from http.conf
-l
lvdisplay -D /dev/rootvg/tmplv
ok
12. 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)
CustomLog
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
resize2fs
13. logical partitions on a hard drive always start with number ____; on the first PATA/IDE hard drive on a PC - that is hda____.
chkconfig --level 35 httpd on
yum -y update httpd
5
NameVirtualHost
14. ____ can expand and shrink ext2 and ext3 file systems
fdisk -l
resize2fs
ls -Z
chkconfig --level 35 httpd on
15. ____ configuration is not available via text mode RHEL installation.
arted; mklabel k
LVM
grep "[.*]" server1.repo
yum -y update httpd
16. SELinux must be configured to Allow HTTPD To Read Home Directories. (Alternatively - activate the httpd_enable_homedirs boolean with the __ command.)
parted /dev/hda print
rpm -V
setsebool -P htttpd.enable.homedirs 1
DocumentRoot
17. To verify integrity of an rpm package - ____/rpm-gpg/RPM-GPG-KEY-redhat-release
rpm -qc httpd
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
--import file
18. ______ will show me volume info including vg - size - etc of /dev/rootvg/tmplv
yum -y update httpd
lvdisplay -D /dev/rootvg/tmplv
e2fsadm
-K
19. Virtual Host Configuration: Creates an error log; the location is based on the DocumentRoot.
example
dumpe2fs
/etc/squid/
ErrorLog
20. This line placed in /etc/hosts.deny denies all services except TFTP to computers in the example.org domain
-i (do not use -U or -F!)
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
rpm -Va
rpm -V pam
21. ___ http://devmon.dev.schwab.com/index.html will make a local copy of the index.html file from devmon
rpm -V
CustomLog
service vsftpd status
wget (http://devmon.dev.schwab.com/index.html)
22. rpm ____ to import the rpm key for integrity checking
ls -Z
--import file
showmount -e
ok
23. 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)
-l
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
pirut
e2fsadm
24. 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
htpasswd -c /etc/httpd/webpass e
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
parted; check x
25. ___________ can be on a RAID device
showmount -e
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
bootable partitions
rpm -V zip
26. create a usb boot disk if the usb stick is /dev/sdc and the file you need is in your present directory
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
dd if=./diskboot.img of=/dev/sdc
ServerName
yum install httpd
27. ___ will tell me if any files in the pam package have changed since it was first installed
setsebool -P htttpd.enable.homedirs 1
rpm -V pam
chcon -R -t httpd_sys_content_t /home/michael/public_html
dd if=./diskboot.img of=/dev/sdc
28. The file that might contain: oldvg - rootvg - etc.
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
setsebool -P htttpd.enable.homedirs 1
select (followed by the device name such as /dev/hdb)
/etc/lvmtab
29. To list under which run levels the web service will start
telnetd : ALL EXCEPT 192.168.1.10
ServerTokens OS from http.conf
hkconfig --list httpd
-i
30. Perform a simple check of the file system. minor-num is x.
dd if=./diskboot.img of=/dev/sdc
resize2fs
parted; check x
hkconfig --list httpd
31. for http - if you implement "UserDir public_html" - you need to also ____ /home/michael if you want /home/michael/public_html accessible
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
chmod 701
yum -y update httpd
chcon -R -t httpd_sys_content_t /home/michael/public_html
32. rpm options include rpm -q [package name] or rpm -qf [path/file] or rmp -q____
(rpm -q)p file (for rpmfile name)
htpasswd -c /etc/httpd/webpass e
parted; check x
resize2fs /dev/myvg/homevol
33. 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
showmount -a
lvdisplay -D /dev/rootvg/tmplv
parted /dev/hda print
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
34. Run the ____ command to find the device associated with the USB key.
chcon -R -t httpd_sys_content_t /home/michael/public_html
fdisk -l
telnetd : ALL EXCEPT 192.168.1.10
resize2fs
35. 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
htpasswd -c /etc/httpd/webpass e
bootable partitions
setsebool -P squid_connect_any 1
ServerTokens OS from http.conf
36. To check status of ftp daemon
CustomLog
service vsftpd status
lvdisplay -D /dev/rootvg/tmplv
-i (do not use -U or -F!)
37. ;'___ /var/www' will tell you the ACL settings of /var/www
/boot
ls -Z
yum install mod_ssl squid
yum install httpd
38. rpm ____ verifies the installed zip rpm against the rpm database
rpm -V zip
fdisk -l
dumpe2fs
-l
39. output from ____ is: Disk /dev/cciss/c0d0: 36.4 GB - 36414750720 bytes... plus listing of partitions - for each physical drive
fdisk -l
resize2fs
bootable partitions
LVM
40. after extending file system "homevol" - unmount it and then run _____ to make the filesystem size match the new larger volume.
nfs
NameVirtualHost
resize2fs /dev/myvg/homevol
example
41. The most straightforward way to make sure Apache starts in bootlevels 3 and 5
squid -z
parted /dev/hda print
chkconfig --level 35 httpd on
DocumentRoot
42. The simplest way to install Apache
/boot
yum install httpd
yum -y update httpd
rpm -ivh --replacepkgs xxxx*
43. Virtual Host Configuration: Names the URL for the virtual host.
ServerName
iptables -F
ServerTokens OS from http.conf
/etc/lvmtab
44. rpm option to show me the package files
setsebool -P squid_connect_any 1
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
parted /dev/hda print
-l
45. 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
CustomLog
htpasswd -c /etc/httpd/webpass e
filesystem type is not ext2 or ext3
46. after you edit /etc/exports - run service ___ stop...
showmount -a
nfs
-i
iptables -F
47. ___ to update the httpd package - automatically answering yes to all the questions
yum -y update httpd
LVM
elinks
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
48. 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 ____
NameVirtualHost
5
iptables -F
elinks
49. 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
NameVirtualHost
-i (do not use -U or -F!)
yum update kernel
50. 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
iptables -F
ok
htpasswd -c /etc/httpd/webpass e