Basic Networking know how's

DNS Domain Name Service: Translating human-friendly computer hostnames into IP addresses

MAC Address- Media Access Control Address: is a unique identifier assigned to most network

adapters or network interface cards (NICs) by the manufacturer for identification
A computer is identified on the network by using MAC address and DNS technology, i.e: Ip address + computer name + MAC address
MAC Address is used in the Media Access Control protocol sub-layer

When unable to connect to internet or a particular website the following steps help to isolate the

issue:check if it is one website or all websites
are the websites external or internal corpnet ones
check if proxy is enabled
check if LAN cable is plugged in
try swapping LAN cables (ensuring that it's not a H/w LAN cable which is faulty)
try to ping the website ex: start->cmd->ping www.google.co.in
try to launch IE and connect through IP address if receieved during ping command

A few t/s steps for network connectivity issues:

start->all programs->accessories->right click on command prompt( open it in elevated mode)-> run

as admin->
ipconfig /release (release DNS command)
ipconfig /registerdns (register DNS command)
ipconfig /renewdns (renew DNS command)

netsh winsock reset
This is useful command that you can use in Microsoft Windows to reset winsock catalog back to

default setting or clean state. You can try this if you are having following Internet access or

networking problems but still failing to resolve the problem after trying all other suggestions.

Hope this blog was informative......

-Priyanka