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Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:01,000 --> 00:00:07,000 Domain Name System or DNS essentially converts names or what are called 2 00:00:07,000 --> 00:00:12,000 domain names such as Faceboook.com to IP Addresses that are understood 3 00:00:12,000 --> 00:00:16,000 by computers and other devices that make up a network 4 00:00:16,000 --> 00:00:20,000 As an example if you’ll go to a website such as Google.com 5 00:00:20,000 --> 00:00:27,000 that name is being converted to an IP Address that allows your traffic 6 00:00:27,000 --> 00:00:32,000 or data to be routed on the local network or even across the Internet 7 00:00:32,000 --> 00:00:39,000 So as an example if I ping facebook.com ping is a protocol that allows 8 00:00:39,000 --> 00:00:47,000 you to test connectivity on a network so once again ping www.facebook.com 9 00:00:47,000 --> 00:00:53,000 you’ll notice that the name facebook.com is resolved to an IP Address 10 00:00:53,000 --> 00:01:02,000 Ping google.com that name or Domain name is resolved to an IP Address 11 00:01:02,000 --> 00:01:09,000 that’s unique to Google.com.I am in the UK so if I ping google.co.uk 12 00:01:09,000 --> 00:01:13,000 notice that’s resolved to a different IP Address 13 00:01:13,000 --> 00:01:17,000 Don’t worry too much about the formatting of IP Addresses at the moment; 14 00:01:17,000 --> 00:01:21,000 we’ll talk more about IP Addressing in a lot more detail later 15 00:01:21,000 --> 00:01:27,000 Ping cnn.com, what I want you to notice here is that each name is resolved 16 00:01:27,000 --> 00:01:32,000 to a separate IP Address that’s unique and different 17 00:01:32,000 --> 00:01:38,000 You could as an example connect to IP Addresses directly but 18 00:01:38,000 --> 00:01:43,000 it’s a lot easier to use human readable names such as Google.com 19 00:01:43,000 --> 00:01:48,000 or Google.co.uk or CNN.com rather than having to remember 20 00:01:48,000 --> 00:01:51,000 IP Addresses of individual sites 21 00:01:51,000 --> 00:01:59,000 So in summary Domain Name System or DNS is a way to resolved Domain names 22 00:01:59,000 --> 00:02:05,000 to IP Addresses so that your traffic can be routed through the Internet 23 00:02:05,000 --> 00:02:09,000 Typically when you connect to a network you’ll be allocated 24 00:02:09,000 --> 00:02:12,000 a Domain Name Systems Server or DNS Server 25 00:02:12,000 --> 00:02:18,000 You can configure them manually and here are some examples of some 26 00:02:18,000 --> 00:02:23,000 Public DNS Servers that you could configure your PC to use 27 00:02:23,000 --> 00:02:32,000 One of the famous ones is Google Public DNS Servers 8.8.8.8 and 8.8.4.4. 28 00:02:32,000 --> 00:02:38,000 In control panel on my Windows machine I could look at the configuration 29 00:02:38,000 --> 00:02:42,000 of my Local Area Connection or Local Network Interface 30 00:02:42,000 --> 00:02:47,000 and under details you’ll see that I have 2 DNS servers configured, 31 00:02:47,000 --> 00:02:52,000 Google as well as my local Internet router at home. 3042