Effective Study Techniques for the RedHat RH202 Exam

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 actual size of Logical Volume on online using ext2online command.

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What, What is written here. Actually here are these parameters.

NETWORKING=yes or no

GATEWAY=x.x.x.x

HOSTNAME=?

NISDOMAIN=?

• uk.co.certification.simulator.questionpool.PList@2c728d80

• Use netconfig command

• uk.co.certification.simulator.questionpool.PList@2c728de0

• Use service network restart or start command

Now try to ping it will work.