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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. It's much more difficult and much more time-consuming to revise partitions with utilities such as ____ or parted after RHEL is installed.
fdisk
iptables
bootable partitions
NameVirtualHost
2. The simplest way to install Apache
yum install httpd
/boot
yum clean all
rpm -qc httpd
3. rpm options include rpm -q [package name] or rpm -qf [path/file] or rmp -q____
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
(rpm -q)p file (for rpmfile name)
5
NameVirtualHost
4. ______ will show me volume info including vg - size - etc of /dev/rootvg/tmplv
grep "[.*]" server1.repo
setsebool -P htttpd.enable.homedirs 1
lvdisplay -D /dev/rootvg/tmplv
hkconfig --list httpd
5. rpm ____ to import the rpm key for integrity checking
--import file
service vsftpd status
5
mke2fs
6. 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.
rpm -V
(rpm -q)p file (for rpmfile name)
rpm -Va
/boot
7. Create a disk label for the partition table called k
(rpm -q)p file (for rpmfile name)
arted; mklabel k
example
yum install mod_ssl squid
8. 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
ls -Z
showmount -a
fdisk
9. 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
rpm -qc httpd
resize2fs /dev/myvg/homevol
pirut
10. You just finished editing your /etc/yum.repos.d/*repo file and want yum to use the new info - so you run ____
yum clean all
rpm -V
tune2fs
fdisk
11. how to install both mod_ssl and squid packages
bootable partitions
ServerName
yum install mod_ssl squid
-i (do not use -U or -F!)
12. rpm ____ [name of package] to verify the package - once you have manually imported the key
/etc/squid/
-K
fdisk -l
LVM
13. 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
dumpe2fs
nfs
/boot
setsebool -P htttpd.enable.homedirs 1
14. The rpm ____ option installs the package - if it isn't already installed.
service vsftpd status
-i
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
dumpe2fs
15. Virtual Host Configuration: Creates an error log; the location is based on the DocumentRoot.
ErrorLog
-K
ServerTokens OS from http.conf
ServerName
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:
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
mke2fs
(rpm -q)p file (for rpmfile name)
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
17. Virtual Host Configuration: Sets a root directory for the virtual host.
yum install mod_ssl squid
chmod 701
DocumentRoot
ls -Z
18. rpm ____ verifies the installed zip rpm against the rpm database
rpm -V zip
chcon -R -t httpd_sys_content_t /home/michael/public_html
wget (http://devmon.dev.schwab.com/index.html)
dd if=./diskboot.img of=/dev/sdc
19. ____ prints superblock and block group information.
telnetd : ALL EXCEPT 192.168.1.10
dd if=./diskboot.img of=/dev/sdc
dumpe2fs
iptables -F
20. 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:
-i (do not use -U or -F!)
htpasswd -c /etc/httpd/webpass e
yum update kernel
wget (http://devmon.dev.schwab.com/index.html)
21. create the basic cache directories in /var/spool/squid with the following command:
bootable partitions
rpm -V pam
squid -z
htpasswd -c /etc/httpd/webpass e
22. use grep to count how many repositories have been configured in the file server1.repo
elinks
parted /dev/hda print
grep "[.*]" server1.repo
showmount -e
23. rpm ____ verifies all installed rpms against the rpm database
chmod 701
rpm -Va
ok
service vsftpd status
24. Virtual Host Configuration: Specifies an IP address for multiple virtual hosts.
tune2fs
yum update kernel
chkconfig --level 35 httpd on
NameVirtualHost
25. for http - if you implement "UserDir public_html" - you need to also ____ /home/michael/public_html if you want /home/michael/public_html accessible
yum update kernel
chmod 705
NameVirtualHost
lvdisplay -D /dev/rootvg/tmplv
26. The main Squid configuration file is ____/squid.conf
NameVirtualHost
/etc/squid/
ServerAdmin
grep "[.*]" server1.repo
27. 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
rpm -V
select (followed by the device name such as /dev/hdb)
bootable partitions
28. 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
ok
yum update kernel
grep "[.*]" server1.repo
ServerTokens OS from http.conf
29. 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
htpasswd -c /etc/httpd/webpass e
/etc/squid/
iptables
-K
30. To list under which run levels the web service will start
ServerName
/boot
hkconfig --list httpd
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
31. when an rpm install fails for xxxx because the same version is already apparently installed - run ____ to just install it all again
showmount -a
NameVirtualHost
rpm -ivh --replacepkgs xxxx*
elinks
32. This line: in /etc/hosts.allow: telnetd : 172.16.72.0/255.255.254.0 is ____
showmount -e
ok
-l
ServerTokens OS from http.conf
33. _____ will change the size of /dev/rootvg/tmplv to 4 gig
chmod 701
lvextend -L4G /dev/rootvg/tmplv
grep "[.*]" server1.repo
rpm -V zip
34. Apache supports security by specifying active ports through the Listen and ____ directives.
arted; mklabel k
filesystem type is not ext2 or ext3
NameVirtualHost
AllowOverride
35. ___ shows me what config files were installed when the httpd package was installed
fdisk -l
rpm -V
mke2fs
rpm -qc httpd
36. create a usb boot disk if the usb stick is /dev/sdc and the file you need is in your present directory
NameVirtualHost
dd if=./diskboot.img of=/dev/sdc
lvextend -L4G /dev/rootvg/tmplv
setsebool -P htttpd.enable.homedirs 1
37. ____ configuration is not available via text mode RHEL installation.
LVM
telnetd : ALL EXCEPT 192.168.1.10
ls -Z
chcon -R -t httpd_sys_content_t /home/michael/public_html
38. SELinux must be configured to Allow HTTPD To Read Home Directories. (Alternatively - activate the httpd_enable_homedirs boolean with the __ command.)
hkconfig --list httpd
parted /dev/hda print
dumpe2fs
setsebool -P htttpd.enable.homedirs 1
39. ____.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.
rpm -V pam
-i (do not use -U or -F!)
example
AllowOverride
40. ____ is used to modify file system parameters
rpm -ivh --replacepkgs xxxx*
rpm -qc httpd
tune2fs
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
41. after you edit /etc/exports - run service ___ stop...
nfs
fdisk -l
-K
resize2fs
42. 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)
e2fsadm
ls -Z
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
43. logical partitions on a hard drive always start with number ____; on the first PATA/IDE hard drive on a PC - that is hda____.
fdisk -l
/boot
5
pirut
44. 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 ____
telnetd : ALL EXCEPT 192.168.1.10
elinks
yum install mod_ssl squid
setsebool -P htttpd.enable.homedirs 1
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
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
setsebool -P squid_connect_any 1
chmod 701
CustomLog
46. To check status of ftp daemon
ServerTokens OS from http.conf
service vsftpd status
setsebool -P htttpd.enable.homedirs 1
iptables -F
47. 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.
-K
iptables -F
fdisk -l
chmod 701
48. ____ is used for creating ext2 and ext3 file systems
mke2fs
fdisk -l
htpasswd -c /etc/httpd/webpass e
--import file
49. ____ can expand and shrink ext2 and ext3 file systems
-i
resize2fs
hkconfig --list httpd
(rpm -q)p file (for rpmfile name)
50. for http - if you implement "UserDir public_html" - you need to also ____ /home/michael if you want /home/michael/public_html accessible
ErrorLog
NameVirtualHost
resize2fs
chmod 701