So your computer starts by checking local DNS cache, then the request is sent to your local Bari ISP.
I liken it to the days when automobiles had carburetors; a mechanic could fix most engine performance problems by fiddling with the choke—spritz a little WD-40 into the throttle body, charge and retire in the suburbs after a few years. Check the TCP/IP settings, run a few utilities to verify the zone records, charge 0 (correcting for inflation) and retire to Arizona.This guide will help you to get the general information about DNS propagation and provide you with the answers to the following questions: 1. If it is not there, it looks it up and saves it in order to speed up the loading next time and to reduce the traffic. Here is an example of the request trace – the number of ISP nodes and their location will vary in each particular case: Each of the ISP nodes checks its own cache to see if it contains the DNS information of the domain.Without these records, a member computer can’t authenticate and get the information it needs to operate in the domain.It then acts like a teenager who can’t get the car keys, growing sullen and exhibiting a variety of bad behaviors. Let’s say you’re a VAR with a customer you plan to upgrade from NT 4.0 to Windows 2000 Server or Windows Server 2003.