1 00:00:00,210 --> 00:00:02,490 Hi, everyone, welcome to this lecture. 2 00:00:02,640 --> 00:00:09,480 In this lecture, we are going to talk about Internet protocol addresses, which is also called IP addresses. 3 00:00:10,050 --> 00:00:18,720 So Internet protocol addresses makes the world go round or at least enable us to email, Skype, navigate 4 00:00:18,720 --> 00:00:20,430 to the web and many more things. 5 00:00:21,090 --> 00:00:24,860 So it is almost as important as well going out. 6 00:00:25,290 --> 00:00:26,870 So it's still the device. 7 00:00:27,210 --> 00:00:34,380 It could be computer, laptop, phone, tablet and many more is assigned an IP address. 8 00:00:34,950 --> 00:00:39,340 And this is what enabled us to communicate and connect with it. 9 00:00:39,930 --> 00:00:43,850 So imagine an IP address as similar to your house address. 10 00:00:44,220 --> 00:00:49,770 So without that particular address, no one could find you and send you mail. 11 00:00:51,010 --> 00:01:00,190 So the IP address system we are presently using in this particular time as IP was in full, which is 12 00:01:00,190 --> 00:01:02,000 also called IP refought. 13 00:01:02,770 --> 00:01:09,880 So it is made up of 32 bit with having for updates or we can say for group of APIs. 14 00:01:10,270 --> 00:01:21,220 So if you want to see it, you can see here we are having for updates, which is containing eight bits, 15 00:01:21,460 --> 00:01:22,900 which means one byte. 16 00:01:23,500 --> 00:01:29,800 So this is the decimal representation of number 172 and this is the binary representation of this particular 17 00:01:29,800 --> 00:01:31,210 number, which is this. 18 00:01:31,570 --> 00:01:34,930 And this is for 16 and two, five, four and one. 19 00:01:35,620 --> 00:01:39,660 So this is how IP was in four or IP before address. 20 00:01:39,670 --> 00:01:40,390 Looks like. 21 00:01:40,780 --> 00:01:46,270 As you can see here, we are having whole chunks of update, which means 32. 22 00:01:47,370 --> 00:01:50,140 Simply 32 bits, OK? 23 00:01:51,370 --> 00:01:56,740 Now, if we talk about like, for instance. 24 00:01:58,430 --> 00:02:04,790 We're having this particular IP address, so each of the numbers between the P a DOT, which as you 25 00:02:04,790 --> 00:02:09,170 can see here, this is dot, dot, dot, dot. 26 00:02:09,590 --> 00:02:14,150 OK, so it is nothing, but it is the equivalent of eight bit. 27 00:02:14,390 --> 00:02:21,560 So this means that we calculate the base to number that computers users represent by the eight bits 28 00:02:22,040 --> 00:02:28,130 and convert them into the decimal number that you are more comfortable to working with. 29 00:02:28,720 --> 00:02:36,600 So each one of the update is capable of holding a bit, representing numbers within range of zero to 30 00:02:36,860 --> 00:02:43,010 255, which simply means that we are having this octave, this octave disaffected and besotted. 31 00:02:43,280 --> 00:02:50,510 OK, so every octave can contain only zero to two to fifty five numbers. 32 00:02:50,540 --> 00:02:52,370 OK, so this is the range. 33 00:02:54,670 --> 00:02:55,640 That we have here. 34 00:02:56,440 --> 00:02:58,340 OK, so I think it is clear. 35 00:02:58,360 --> 00:03:01,650 So it is nothing but to the to the power aide. 36 00:03:02,050 --> 00:03:04,660 OK, Synagis. 37 00:03:05,910 --> 00:03:13,140 Let's talk about some classes of Idrissa, so before doing before going to classes of Ferdowsi's, first 38 00:03:13,140 --> 00:03:15,630 of all, it is OK. 39 00:03:17,180 --> 00:03:17,840 So that. 40 00:03:18,920 --> 00:03:22,220 It will appear to us, OK, now everything is fine. 41 00:03:24,530 --> 00:03:30,190 Now, if you talk about the classes of IP addresses, so IP addresses are generally put into three classes, 42 00:03:30,500 --> 00:03:37,760 so as you can see that the first class that we have is zero zero zero zero dot and 127 dot to Phi Phi 43 00:03:38,240 --> 00:03:39,530 Phi Phi like this. 44 00:03:39,740 --> 00:03:44,260 And then we have in class number two, this is the class and the class descenders. 45 00:03:44,720 --> 00:03:46,670 So we're having all these kinds of class. 46 00:03:46,700 --> 00:03:49,730 So in the future lectures, we are going to go about all these classes. 47 00:03:50,060 --> 00:04:00,440 OK, so guys, if you want to understand what is private IP and what is a public IP, so if you talk 48 00:04:00,440 --> 00:04:02,900 about public IP address, so what it is. 49 00:04:02,900 --> 00:04:10,010 So computer on the Internet is identified by a unique 32 bit address which we have seen. 50 00:04:10,820 --> 00:04:17,320 So public IP addresses are publicly registered with Network Information Center, which is also called 51 00:04:17,540 --> 00:04:20,980 NCIC, to avoid IP conflicts. 52 00:04:21,740 --> 00:04:30,260 So computer on router protected local area network need not to be accessed by the public for the reason 53 00:04:30,740 --> 00:04:35,650 he has reserved 13 addresses that can never be registered publicly. 54 00:04:36,680 --> 00:04:39,730 So those are called as public IP. 55 00:04:40,340 --> 00:04:49,460 So if you talk about what is private IP, so if you talk about the IP address of the computer inside 56 00:04:49,550 --> 00:04:56,980 Vilan, which is wireless local area network, which we have seen that 192 but 160 are one zero one. 57 00:04:57,020 --> 00:05:00,110 OK, let me write it here so that it will be easy to understand. 58 00:05:02,270 --> 00:05:04,560 One ninety two. 59 00:05:04,940 --> 00:05:10,160 Sorry for the by and writing, because I'm doing this with the help of my Mouse 168. 60 00:05:11,600 --> 00:05:16,440 The thing is, you need to understand what I want to teach you. 61 00:05:16,460 --> 00:05:22,820 OK, so we are having this particular iPad, just 13, and as a result, Baida and Nici are divided 62 00:05:22,820 --> 00:05:23,940 into three class. 63 00:05:24,230 --> 00:05:27,530 So now let's see what those classes are. 64 00:05:27,830 --> 00:05:29,640 OK, so we are having these many class. 65 00:05:30,200 --> 00:05:32,090 So the first class is called this class. 66 00:05:33,320 --> 00:05:36,950 OK, so the IP range, as you can see here from here to here. 67 00:05:37,490 --> 00:05:38,960 So this is nothing but. 68 00:05:39,930 --> 00:05:50,550 These particular glass contains maximum hose to six seven seven seven two hundred sixteen and use it 69 00:05:50,550 --> 00:05:53,400 for large network is spread across countries. 70 00:05:53,780 --> 00:05:55,540 We are not contributor's facilities. 71 00:05:55,860 --> 00:06:00,200 OK then OK then we are having a dozen. 72 00:06:00,210 --> 00:06:02,720 Then we are having Glasby screened. 73 00:06:02,850 --> 00:06:08,550 As you can see, this is the range of Glaspie and it is having maximum horsed around. 74 00:06:09,880 --> 00:06:15,010 Let me write it here, let me write it for this first, OK, 16. 75 00:06:16,730 --> 00:06:19,850 Seven, seven, seven. 76 00:06:23,130 --> 00:06:29,430 These are the number of holes that can connect using this particular IP address and then for this Glasby 77 00:06:29,430 --> 00:06:40,000 IP address, we are having zero four eight nine five six seven. 78 00:06:40,440 --> 00:06:45,230 These are the maximum and it is used for networks like universities. 79 00:06:46,110 --> 00:06:51,560 These are simply reserved by the reserve, for the networks, for the universities. 80 00:06:51,840 --> 00:06:53,130 Then we are having Glaspie. 81 00:06:53,950 --> 00:06:55,550 So what what is Glaspie? 82 00:06:55,950 --> 00:07:03,300 So Class B is having around maximum of sixty five thousand five hundred thirty six. 83 00:07:03,540 --> 00:07:04,380 OK, I think. 84 00:07:06,540 --> 00:07:07,590 Things of his to you. 85 00:07:07,890 --> 00:07:11,870 OK, so this is nothing, but this is perfect for the home. 86 00:07:12,690 --> 00:07:15,090 OK, so we are having three classes now. 87 00:07:15,090 --> 00:07:16,050 Things are clear here. 88 00:07:16,050 --> 00:07:17,100 We are having three classes. 89 00:07:17,340 --> 00:07:21,330 The first classes for the network is spread across the cities. 90 00:07:21,330 --> 00:07:25,190 And the second class, which is Class B, is for the networks like universities. 91 00:07:25,200 --> 00:07:27,740 And then we are having Class B, which is used for the home. 92 00:07:28,290 --> 00:07:30,590 OK, so this concept is not clear. 93 00:07:31,590 --> 00:07:32,640 So private. 94 00:07:32,640 --> 00:07:33,300 Let me. 95 00:07:35,670 --> 00:07:44,790 OK, so OK, so private IP addresses are assigned to the client devices connected to the router. 96 00:07:45,450 --> 00:07:54,090 So client device can be your laptop, mobile, tablet, anything which is capable of wireless networking. 97 00:07:54,630 --> 00:08:00,000 OK, so if you want to check IP address so you can simply go to Google and simply there my IP, then 98 00:08:00,000 --> 00:08:02,550 it will give you your public IP, OK. 99 00:08:02,880 --> 00:08:05,010 It will give you your public IP. 100 00:08:05,310 --> 00:08:06,840 So this is how it looks like. 101 00:08:06,840 --> 00:08:10,650 This is how public and private IP assigned. 102 00:08:10,650 --> 00:08:17,340 And we have talked about all the classes that we have here and everything about all about IP address 103 00:08:17,340 --> 00:08:18,420 that we need to learn. 104 00:08:18,780 --> 00:08:20,760 OK, so guys, this is all for this lecture.