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Q1. CORRECT TEXT
You are a System administrator. Using Log files very easy to monitor the system. Now there are 50 servers running as Mail, Web, Proxy, DNS services etc. You want to centralize the logs from all servers into on LOG Server. How will you configure the LOG Server to accept logs from remote host ?
Answer and Explanation:
By Default system accept the logs only generated from local host. To accept the Log from other host configure:
1. vi /etc/sysconfig/syslog
SYSLOGD_OPTIONS="-m 0 -r"
Where
-m 0 disables 'MARK' messages.
-r enables logging from remote machines
-x disables DNS lookups on messages recieved with -r
2. service syslog restart
Q2. 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
+ à Add the Permissions
- à Remove the Permissions
= à Assigns the Permissions
Numeric Method:
4àRead
2à Write
1àExecute
Total: 7, total for owner user, owner group member and for others : 777
1. chmod u+rwx /data
2. chmod g+rwx /data
3. chmod o-rwx /data
or
chmod 770 /data
4. Verify the /data : ls -ld /data
5. You will get drwxrwx---
Q3. CORRECT TEXT
Any mail coming for accountmanager should get by jeff user.
Answer and Explanation:
1. vi /etc/mail/virtusertable
accountmanager@ jeff
2. service sendmail restart
Q4. CORRECT TEXT
Create the user named jeff, marion, harold
Answer and Explanation:
1. useradd jeff
2. useradd marion
3. useradd harold
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.
Q5. CORRECT TEXT
Change the root Password to redtophat
Answer and Explanation:
Boot the system in Single user modeUse the passwd command
Q6. CORRECT TEXT
You are giving RHCE exam. Examiner gave you the Boot related problem and told to you that make successfully boot the System. When you started the system, System automatically asking the root password for maintenance. How will you fix that problem?
Answer and Explanation:
Maintenance mode also known as emergency mode. System boots on emergency mode when file system error occurred. It is due to unknown partition, bad filesystem specified in /etc/fstab. To slove follow the steps
6. Give the Root password
7. fdisk -l àVerify the Number of parations.
8. Identify the Root partition, e2label /dev/hda1, e2label /dev/hda2.....
9. Remount the root partation on rw mode: mount -o remount,defaults /dev/hda6 /
10. vi /etc/fstab
Correct all partitions, mount point, mount options, file system etc.
6. Press ctrl+d
Q7. CORRECT TEXT
Add a new logical partition having size 100MB and create the /data which will be the mount point for the new partition.
Answer and Explanation:
Use fdisk /dev/hda àTo create new partition.Type n àFor New partitionsIt will ask for Logical or Primary Partitions. Press l for logical.It will ask for the Starting Cylinder: Use the Default by pressing Enter Key.Type the Size: +100M àYou can Specify either Last cylinder of Size here.Press P to verify the partitions lists and remember the partitions name.Press w to write on partitions table.Either Reboot or use partprobe command.Use mkfs -t ext3 /dev/hda?Ormke2fs -j /dev/hda? àTo create ext3 filesystem.vi /etc/fstabWrite:/dev/hda? /data ext3 defaults 0 0Verify by mounting on current Sessions also:mount /dev/hda? /data
Q8. CORRECT TEXT
There is a NFS server 192.168.0.254 and all required packages are dumped in /var/ftp/pub of that server and the /var/ftp/pub directory is shared. Install the Redhat Enterprise Linux 5 by creating following partitions:
/ 1000
/boot 200
/home 1000
/var 1000
/usr 4000
swap 2X256 (RAM SIZE)
Answer and Explanation:
Note: Examiner will provide you the Installation startup CD. And size may vary see on the exam paper.
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: 192.168.0.254
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. 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.
Q9. CORRECT TEXT
Make sure on /data that only the owner user can remove files/directories.
Answer and Explanation:
By default user1 can remove user2's files due to directory permission to group member. We can prevent of deleting files from others users using Sticky Bits.chmod o+t /dataVerify /data: ls –ld /data
You will get: drwxrwx-T
Q10. CORRECT TEXT
Share the /data directory only to example.com members. These hosts should get read and write access on shared directory.
Answer and Explanation:
1. vi /etc/exports
/data *.example.com(rw,sync)
2. service nfs start
3. service portmap restart
4. chkconfig nfs on
5. chkconfig portmap on
In Linux to share the data we use the /etc/exports file. Pattern is:
Path client(permission)
Shared Directory Path, Client can be single host or domain name or ip address. Permission should specify without space with client lists in parentheses.