What Is DNS

Imagine that you would like to create the local newspaper instructions, you take out paper and pen, write the letter and stuff it it an envelope.

Now, if this involves addressing the envelope you just write Anytown local newspaper. You stamp the envelope and set it inside your mailbox.

The mail-person gets to your mailbox, pulls the envelope and constitutes a telephone call. The mail-individual is calling a DNS (Domain Title Service) company. The DNS company informs the mail-person exactly what the real, technical, address is and away it is going. Pretty awesome… you did not have to know or recall the exact address, only the “friendly title”.

Six several weeks later the newspaper moves to a different city. They’ll call the DNS company and adjust the account towards the new address. Given that they did this, you, when writing another letter for them, are none the smarter… you just keep addressing the envelope to Anytown local newspaper of course. Pretty awesome.

All websites, for example Google, Yahoo, etc, are “located” on the server (or multiple servers). These servers have these addresses that distinctively identify them on the web (similar to our postal address distinctively identifies our residence). These addresses could be hard for we to keep in mind.

DNS (Domain Title Service) is a means of solving or converting easy to use names (like Google.com) for their technical addresses (173.194.115.82). It’s much simpler for all of us to keep in mind Google.com than 173.194.115.82.

You will find several DNS servers all over the world that coordinate their information with one another. The aim is it does not matter where you stand you could reference an internet site by its easy to use title. If, as with the instance above, a previous address changes, they are saying that it may require 72 hrs for the DNS servers to achieve the correct address.

Are you currently curious and wish to discover the technical address of the website? Simply pull-up a DOS screen and ping the “friendly title”. To get at a DOS screen hold lower the Home windows key in your keyboard and press R. This can mention the Run dialog box. Key in CMD and press the Enter key. A black window with whitened lettering can look… key in:

ping http://world wide web.google.com

and press the Enter key.

You will see something similar to:

Pinging world wide web.Google.com [74.125.227.209] with 32 bytes of information:

Reply from 74.125.227.209: bytes=32 time=38ms TTL=57

Reply from 74.125.227.209: bytes=32 time=38ms TTL=57

Reply from 74.125.227.209: bytes=32 time=38ms TTL=57

Reply from 74.125.227.209: bytes=32 time=37ms TTL=57

Ping statistics for 74.125.227.209:

Packets: Sent = 4, Received = 4, Lost =  (% loss),

Approximate round trip occasions in milli-seconds:

Minimum = 37ms, Maximum = 38ms, Average = 37ms

The technical address is 74.125.227.209. The ping command will “resolve” the friendly address to the technical address while pinging it.
Check out this great website for a DNS Guide.

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