CentOS

I am trying to run the following command on Centos6 machine

yum install net-tools
i am getting mirrors not found error
how to resolve it
I shared my screen shot

All those "Couldn't resolve host" messages show you have a broken DNS setup. Check /etc/resolv.conf for valid and working nameserver lines. If one doesn't exist and you don't know what your name server should be, you can use 'nameserver 8.8.8.8' while you find out.

I have a centos 6 machine which is running on VMware. I am trying to run the command yum install net-tools
But I am recieving an error.I am sharing the screen shot.

Please don't make multiple topics for the same problem.

This too is a DNS problem. See TrevorH's reply above.