Lets' start with a really simple problem.
You want to send an email from your desktop, laptop, smart phone or tablet, to, say, firstname.lastname@example.org. You open your mail client, as it's called, whether that is Outlook, Lotus Notes, Thunderbird, Google or whatever it is, type your email out, put the address in the address bar, and click ‘send'.
As far as you are concerned, that email is now winging its way through the Internet to its destination. In fact, initially, it hasn't even left your computer, because even at the stage of clicking ‘send', there's a problem
"This module will explain how the Domain Name Service (or DNS) swaps web and email addresses into the correct IP addresses to enable packets to reach their correct destination"
By completing/passing this course, you will attain the certificate How Does DNS Really Work? - Bitesize
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