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Q131. CORRECT TEXT
Configure the caching only-name server for example.com where DNS server is 192.100.0.254.
Answer and Explanation:
1. vi /var/named/chroot/etc/named.conf
options {
forwarders { 192.168.22.250; };
forward only;
};
2. service named start | restart
Caching-only name server forwards a request to another name server or to the root name servers in orders to determine the authoritative name server for the resolution. Once resolution has taken place, the caching-only name server stores the resolved information in a cache for the designated time to live period.
Q132. CORRECT TEXT
You want to deny to user1 and user2 users to access files via ftp. Configure to deny these users to access via ftp.
Answer and Explanation:
1. vi /etc/vsftpd/ftpusers
user1
user2
2. service vsftpd start| restart
Using /etc/vsftpd/ftpusers file we can deny to certain users to access files via ftp. As well as there is another file named /etc/vsftpd.user_list can be used to allow or to deny to users.
Q133. CORRECT TEXT
You are giving RHCT Exam and in your Exam paper there is a question written, make successfully ping to 192.168.0.254.
Answer and Explanation:
In Network problem think to check:IP Configuration: use ifconfig command either IP is assigned to interface or not?Default Gateway is set or not?Hostname is set or not?Routing problem is there?Device Driver Module is loaded or not?Device is activated or not?
Check In this way:use ifconfig command and identify which IP is assigned or not.cat
/etc/sysconfig/network àWhat, What is written here. Actually here are these parameters.
NETWORKING=yes or no
GATEWAY=x.x.x.x
HOSTNAME=?
NISDOMAIN=?
- Correct the fileUse netconfig command
- Either Select Automatically from DHCP or assign the static IPUse service network restart or start command
Now try to ping it will work.
Q134. CORRECT TEXT
There are Mail servers, Web Servers, DNS Servers and Log Server. Log Server is already
configured. You should configure the mail server, web server and dns server to send the logs to log server.
Answer and Explanation:
According to question, log server is already configured. We have to configure the mail, web and dns server for log redirection.
In mail, web and dns server:
1. vi /etc/syslog.conf
mail.* @logserveraddress
2. service syslog restart
mail is the facility and * means the priority. It sends all logs of mail service to mail into log server.
Q135. CORRECT TEXT
Give Full Permission to owner user and owner group member but no permission to others on /data.
Answer and Explanation:
We can change the permission of file/directory either character symbol method or numeric
method.
Permission:
r-Read
w-Write
x-Execute
Permission Category
u- Owner User
g- Owner Group
o- Others
Operators
+ àAdd the Permissions
- àRemove the Permissions
= àAssigns the Permissions
Numeric Method:
4àRead
2àWrite
1àExecute
Total: 7, total for owner user, owner group member and for others : 777chmod u+rwx /datachmod
g+rwx /datachmod o-rwx /data
or
chmod 770 /dataVerify the /data : ls -ld /dataYou will get drwxrwx---
Q136. CORRECT TEXT
All mails to my133t.org should get by marion user.
Answer and Explanation:
3. vi /etc/mail/virtusertable
@my133t.org marion
# service sendmail restart
/etc/mail/virtusertable file is used to send the mail coming for virtual user to real user. According to question, all mail to cracker.org should get by eric user so
@my133t.org eric : Which sends all mail of cracker.org to eric user.
Q137. CORRECT TEXT
One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size of that Logical Volume is 124MB. Make successfully that the size of Logical Volume 245MB without losing any data. The size of logical volume 240MB to 255MB will be acceptable.
Answer and Explanation:
1. First check the size of Logical Volume: lvdisplay /dev/vo/myvol
2. Increase the Size of Logical Volume: lvextend -L+121M /dev/vo/myvol
3. Make Available the size on online: ext2online /dev/vo/myvol
4. Verify the Size of Logical Volume: lvdisplay /dev/vo/myvol
5. Verify that the size comes in online or not: df -h
We can extend the size of logical Volume using the lvextend command. As well as to decrease the size of Logical Volume, use the lvresize command. In LVM v2 we can extend the size of Logical Volume without unmount as well as we can bring the size of Logical Volume on online using ext2online command.
Q138. CORRECT TEXT
Make Secondary belongs the jeff and marion users on sysusers group. But harold user should not belongs to sysusers group.
Answer and Explanation:
1. usermod -G sysusers jeff
2. usermod -G sysuser marion
3. Verify by reading /etc/group file
Using usermod command we can make user belongs to different group. There are two types of group one primary and another is secondary. Primary group can be only one but user can belongs to more than one group as secondary.
usermod -g groupname username à To change the primary group of the user
usermod -G groupname username à To make user belongs to secondary group.
Q139. CORRECT TEXT
Create the user named jane and john.
Answer and Explanation:
1. useradd jane
2. useradd john
useradd command is used to create the user. All user's information stores in /etc/passwd and user;s shadow password stores in /etc/shadow.
Q140. CORRECT TEXT
Install the Redhat Linux RHEL 4 through NFS. Where your Server is server1.example.com having IP 172.24.254.254 and shared /var/ftp/pub. The size of the partitions are listed below:
/ à 1048
/home à 1028
/boot à 512
/var à 1028
/usr à 2048
Swap -> 1.5 of RAM Size
/archive à configure the RAID Level 0 of remaining all free space.
After completing the installation through NFS solve the following questions. There are two networks 172.24.0.0/16 and 172.25.0.0/16. As well as there are two domains example.com on 172.24.0.0/16 network and my133t.org on 172.25.0.0/16 network. Your system is based on example.com domain.
Answer and Explanation:
1. Insert the CD on CD-ROM and start the system.
2. In Boot: Prompt type linux askmethod
3. It will display the language, keyboard selection.
4. It will ask you for the installation method.
5. Select the NFS Image from the list
6. It will ask the IP Address, Net mask, Gateway and Name Server. Select Use
Dynamic IP Configuration: because DHCP Server will be configured in your exam lab.
7. It will ask for the NFS Server Name and Redhat Enterprise Linux Directory.
Specify the NFS Server: 172.24.254.254
Directory: /var/ftp/pub
8. After Connecting to the NFS Server Installation start in GUI. Go up to the partition screen by selecting the different Options.
9. Create the partition According to the Question because Size and what-what partition should you create at installation time is specified in your question
10. Create the two RAID partitions having equal size of remaining all free space.
11. Click on RAID button
12. Type mount point /archive
13. Select RAID Level 0
14. Click on ok
15. Then select the MBR Options, time zone and go upto package selections.
It is another Most Important Time of installation. Due to the time limit, you should care about the installation packages. At Exam time you these packages are enough.
X-Window System
GNOME Desktop
(these two packages are generally not required)
Administration Tools.
System Tools
Windows File Server
FTP Servers
Mail Servers
Web Servers
Network Servers
Editors
Text Based Internet
Server Configuration Tools
Printing Supports
When installation will complete, your system will reboot. Jump for another Question.
