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Q91. CORRECT TEXT
Add a user named user4 and make primarily belongs to training group. As well account should expire on 30 days from today.
Answer and Explanation:
useradd usernamepasswd usernameusermod -e "date"
example: usermod -e "12 Feb 2006" user4
Verify: chage -l user4
Q92. CORRECT TEXT
Who ever creates the files/directories on /archive group owner should be automatically should be the same group owner of /archive.
Answer and Explanation:
1. chmod g+s /archive
2. Verify using: ls -ld /archive
Permission should be like:
drwxrws--- 2 root sysuser 4096 Mar 16 18:08 /archive
If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory.
To set the SGID bit: chmod g+s directory
To Remove the SGID bit: chmod g-s directory
Q93. CORRECT TEXT
Share /data directory using NFS 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)
Check the SELinux Context, should be like this:
-rw-r--r-- root root system_u:object_r:exports_t /etc/exports
Use the restorecon -R /etc command to restore the selinux context of the file.
2. service nfs start | restart
3. service portmap start | 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. NFS is RPC service so portmapper service should restart after starting the nfs service.
Q94. CORRECT TEXT
Create the directory /data and group owner should be the sysadmin group.
Answer and Explanation:
1. chgrp sysadmin /data
2. Verify using ls -ld /data command. You should get like
drwxr-x--- 2 root sysadmin 4096 Mar 16 17:59 /data
chgrp command is used to change the group ownership of particular files or directory.
Another way you can use the chown command.
chown root:sysadmin /data
Q95. CORRECT TEXT
Install the Redhat Linux RHEL 5 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
/document 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 cracker.org on 172.25.0.0/16 network. Your system is based on example.com domain. SELinux Must be on enforcing mode.
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 /document
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.
Q96. CORRECT TEXT
Create the user named eric and deny to interactive login.
Answer and Explanation:
5. useradd eric
6. passwd eric
7. vi /etc/passwd
8. eric:x:505:505::/home/eric:/sbin/nologin
Which shell or program should start at login time is specified in /etc/passwd file. By default Redhat Enterprise Linux assigns the /bin/bash shell to the users. To deny the interactive login, you should write /sbin/nologin or /bin/false instead of login shell.
Q97. CORRECT TEXT
Create the user named jackie, curtin, david
Answer and Explanation:
1. useradd jackie
2. useradd curtin
3. useradd david
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.
Q98. CORRECT TEXT
Add a job on Cron schedule to display Hello World on every two Seconds in terminal 8.
Answer and Explanation:cat >schedule
*/2 * * * * /bin/echo "Hello World" >/dev/tty8crontab scheduleVerify using: crontab -lservice crond restart
Cron helps to schedule on recurring events. Pattern of Cron is:
Minute Hour Day of Month Month Day of Week Commands
0-59 0-23 1-31 1-12 0-7 where 0 and 7 means Sunday.
Note * means every. To execute the command on every two minutes */2.
To add the scheduled file on cron job: crontab filename
To List the Cron Shedule: crontab -l
To Edit the Schedule: crontab -e
To Remove the Schedule: crontab -r
Q99. CORRECT TEXT
Make on /data that only the user owner and group owner member can fully access.
Answer and Explanation:
1. chmod 770 /data
2. Verify using : ls -ld /data
Preview should be like:
drwxrwx--- 2 root sysadmin 4096 Mar 16 18:08 /data
To change the permission on directory we use the chmod command. According to the question that only the owner user (root) and group member (sysadmin) can fully access the directory so:
chmod 770 /data
Q100. CORRECT TEXT
There is a FTP server 192.168.0.254 and all required packages are dumped in /var/ftp/pub of that server and anonymous login is enabled. Install the Redhat Enterprise Linux 5 as an anonymous 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 here mentioned 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 FTP 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 FTP site name and Redhat Enterprise Linux Directory.
Specify the FTP Server: 192.168.0.254
Directory: pub à Because anonymous login on /var/ftp.
8. After Connecting to the FTP Server Installation will start. 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 be 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.