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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. Run the ____ command to find the device associated with the USB key.
chkconfig --level 35 httpd on
fdisk -l
service vsftpd status
example
2. after you edit /etc/exports - run service ___ stop...
pirut
bootable partitions
nfs
yum update kernel
3. create a usb boot disk if the usb stick is /dev/sdc and the file you need is in your present directory
CustomLog
chcon -R -u system_u /www/; chcon -R -t httpd_sys_content_t /www/
DocumentRoot
dd if=./diskboot.img of=/dev/sdc
4. This line placed in /etc/hosts.deny denies all services except TFTP to computers in the example.org domain
chmod 705
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
chkconfig --level 35 httpd on
dd if=./diskboot.img of=/dev/sdc
5. To check status of ftp daemon
service vsftpd status
DocumentRoot
ServerTokens OS from http.conf
wget (http://devmon.dev.schwab.com/index.html)
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.
example
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
--import file
ErrorLog
7. how to install both mod_ssl and squid packages
service vsftpd status
chcon -R -t httpd_sys_content_t /home/michael/public_html
yum install mod_ssl squid
parted /dev/hda print
8. Perform a simple check of the file system. minor-num is x.
DocumentRoot
ok
dumpe2fs
parted; check x
9. 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.
iptables -F
NameVirtualHost
resize2fs
yum -y update httpd
10. ____ is used to modify file system parameters
filesystem type is not ext2 or ext3
fdisk -l
lvdisplay -D /dev/rootvg/tmplv
tune2fs
11. 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
lvdisplay -D /dev/rootvg/tmplv
mke2fs
AllowOverride
ServerTokens OS from http.conf
12. 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:
showmount -e
lvdisplay -D /dev/rootvg/tmplv
yum clean all
nfs
13. 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
CustomLog
fdisk -l
yum update kernel
setsebool -P squid_connect_any 1
14. To select a different device without having to restart parted - use the ____ command . Then - you can view its partition table or configure it.
rpm -V zip
rpm -Va
select (followed by the device name such as /dev/hdb)
rpm -qc httpd
15. 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
parted /dev/hda print
chmod 705
lvdisplay -D /dev/rootvg/tmplv
16. Apache supports security by specifying active ports through the Listen and ____ directives.
squid -z
NameVirtualHost
yum -y update httpd
chkconfig --level 35 httpd on
17. for http - if you implement "UserDir public_html" - you need to also ____ /home/michael if you want /home/michael/public_html accessible
bootable partitions
chcon -R -t httpd_sys_content_t /home/michael/public_html
fdisk -l
chmod 701
18. ____ prints superblock and block group information.
dumpe2fs
rpm -qc httpd
CustomLog
chkconfig --level 35 httpd on
19. output from ____ is: Disk /dev/cciss/c0d0: 36.4 GB - 36414750720 bytes... plus listing of partitions - for each physical drive
CustomLog
chmod 701
pirut
fdisk -l
20. Create a disk label for the partition table called k
yum install httpd
/etc/squid/
iptables
arted; mklabel k
21. ____ can expand and shrink ext2 and ext3 file systems
arted; mklabel k
resize2fs
ok
setsebool -P htttpd.enable.homedirs 1
22. logical partitions on a hard drive always start with number ____; on the first PATA/IDE hard drive on a PC - that is hda____.
5
iptables
LVM
htpasswd -c /etc/httpd/webpass e
23. 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
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
(rpm -q)p file (for rpmfile name)
chmod 701
AllowOverride
24. ______ will show me volume info including vg - size - etc of /dev/rootvg/tmplv
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
yum install httpd
setsebool -P squid_connect_any 1
lvdisplay -D /dev/rootvg/tmplv
25. rpm ____ to import the rpm key for integrity checking
--import file
NameVirtualHost
rpm -V
nfs
26. To verify integrity of an rpm package - ____/rpm-gpg/RPM-GPG-KEY-redhat-release
service vsftpd status
rpm --import /etc/pki(/rpm-gpg/RPM-GPG-KEY-redhat-release)
yum install httpd
AllowOverride
27. Virtual Host Configuration: Specifies an IP address for multiple virtual hosts.
setsebool -P htttpd.enable.homedirs 1
NameVirtualHost
ErrorLog
dd if=./diskboot.img of=/dev/sdc
28. for http - if you implement "UserDir public_html" - you need to also ____ /home/michael/public_html if you want /home/michael/public_html accessible
wget (http://devmon.dev.schwab.com/index.html)
chmod 705
yum -y update httpd
parted /dev/hda print
29. This line: in /etc/hosts.allow: telnetd : 172.16.72.0/255.255.254.0 is ____
resize2fs /dev/myvg/homevol
fdisk
lvdisplay -D /dev/rootvg/tmplv
ok
30. To list under which run levels the web service will start
hkconfig --list httpd
select (followed by the device name such as /dev/hdb)
yum install httpd
NameVirtualHost
31. _____ will change the size of /dev/rootvg/tmplv to 4 gig
iptables
lvextend -L4G /dev/rootvg/tmplv
fdisk -l
rpm -qc httpd
32. 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
yum -y update httpd
tune2fs
telnetd : .crack.org : twist /bin/echo Sorry %c - access denied (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
33. create the basic cache directories in /var/spool/squid with the following command:
-i
e2fsadm
setsebool -P htttpd.enable.homedirs 1
squid -z
34. 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
/boot
rpm -V zip
fdisk
parted /dev/hda print
35. Virtual Host Configuration: Assigns an e-mail address for the specified virtual host.
chmod 701
iptables -F
ServerAdmin
parted /dev/hda print
36. rpm options include rpm -q [package name] or rpm -qf [path/file] or rmp -q____
ALL EXCEPT in.tftpd : .example.org (http://books24x7.com/viewer.asp?bookid=18196&chunkid=908275044)
resize2fs
(rpm -q)p file (for rpmfile name)
ServerTokens OS from http.conf
37. when an rpm install fails for xxxx because the same version is already apparently installed - run ____ to just install it all again
LVM
parted /dev/hda print
rpm -ivh --replacepkgs xxxx*
telnetd : ALL EXCEPT 192.168.1.10
38. rpm ____ to install kernel updates
chkconfig --level 35 httpd on
ok
-i (do not use -U or -F!)
pirut
39. The most straightforward way to make sure Apache starts in bootlevels 3 and 5
rpm -qc httpd
showmount -a
chkconfig --level 35 httpd on
setsebool -P htttpd.enable.homedirs 1
40. ___ will tell me if any files in the pam package have changed since it was first installed
ServerName
rpm -V pam
filesystem type is not ext2 or ext3
fdisk -l
41. The rpm ____ option installs the package - if it isn't already installed.
-i
yum update kernel
/etc/squid/
fdisk
42. You ran "e2label /dev/sda" and got "bad magic number" Why?
LVM
filesystem type is not ext2 or ext3
fdisk -l
-i (do not use -U or -F!)
43. rpm ____ verifies the installed zip rpm against the rpm database
rpm -V zip
/etc/squid/
NameVirtualHost
example
44. ___________ can be on a RAID device
NameVirtualHost
bootable partitions
e2fsadm
-K
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:
htpasswd -c /etc/httpd/webpass e
5
mke2fs
rpm -V
46. Virtual Host Configuration: Creates an error log; the location is based on the DocumentRoot.
chmod 701
ServerName
ErrorLog
mke2fs
47. ___ to update the httpd package - automatically answering yes to all the questions
example
mke2fs
yum -y update httpd
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-ports 3128
48. use parted to display disk geometry for /dev/hda and end up in shell
pirut
ls -Z
parted /dev/hda print
yum update kernel
49. The file that might contain: oldvg - rootvg - etc.
resize2fs
/etc/lvmtab
rpm -V pam
e2fsadm
50. ___ http://devmon.dev.schwab.com/index.html will make a local copy of the index.html file from devmon
ok
wget (http://devmon.dev.schwab.com/index.html)
elinks
parted; check x