because it simple...

what is my MAC address, how do i find the MAC address of my computer

Main content page - what is my MAC address.In computer networking, a Media Access Control address (MAC address), Ethernet Hardware Address (EHA), hardware address, adapter address or physical address is a quasi-unique identifier assigned to most network adapters or network interface cards (NICs) by the manufacturer for identification.
There are a number of ways to find out whether your system is resolving properly. You can use nslookup to verify name resolution. The nslookup command can be used to find various details relating to a particular DNS (Domain Name System) such as IP address, MX records etc.
Ping is a fundamental program that allows a computer to send a request to another computer somewhere else on the network or on the Internet in order to determine if the computer exists and is responding.
IP is the usual abbreviation for Internet Protocol. It is also a common abbreviation for different things in different fields.
The default lease is five days, but a network administrator should evaluate their own particular circumstances to determine an appropriate lease. To set up DHCP, you basically need a DHCP-supported client (at least one) and router, and a DHCP server.