1 00:00:00,510 --> 00:00:02,070 So let's talk about this subject. 2 00:00:02,680 --> 00:00:09,010 This is also an important topic in our booking and let's talk about first submitting and devoting large 3 00:00:09,030 --> 00:00:16,520 networking to small subnetwork is somebody so we can develop into small sub networks exclusively. 4 00:00:17,010 --> 00:00:21,380 And this subject mask is masking which to define network partnerships. 5 00:00:22,020 --> 00:00:31,020 So if you do it right, particular penthouse, you need to identify the starting network and the wholesale 6 00:00:31,470 --> 00:00:37,830 for that will use the subnet mask and subnet mask helps you to organize different networks neatly. 7 00:00:38,160 --> 00:00:47,250 So if you have different departments and you've got Alexia's and était and giving, maintaining the 8 00:00:47,250 --> 00:00:56,850 large network is very is not nice that you can do it as you see as one subnet, an easy one subnet, 9 00:00:57,000 --> 00:00:59,130 another department as one subnet. 10 00:00:59,520 --> 00:01:01,770 So you can easily manage the subnet. 11 00:01:03,480 --> 00:01:13,160 So let's see the private eye, and so we have discussed the terror mainly with how this crisis, the 12 00:01:13,170 --> 00:01:21,450 ABC and we also discussed the DNA, but we'll see how this progresses on the ABC and this private IP 13 00:01:21,450 --> 00:01:23,810 addresses are not used anywhere on the public. 14 00:01:24,180 --> 00:01:27,470 These are only used for in private networks. 15 00:01:27,960 --> 00:01:31,050 So these IP addresses cannot communicate with ultraworld. 16 00:01:32,070 --> 00:01:33,720 And Glacier. 17 00:01:35,590 --> 00:01:45,010 I experts range from one to one hundred and this and that is the private I put in for the cashier and 18 00:01:45,010 --> 00:01:50,510 the Devadas is covered for a number of networks. 19 00:01:50,530 --> 00:01:54,760 We can create our 136 a number of this money. 20 00:01:55,180 --> 00:02:02,730 So we will look at this, how we got this number in next and come into the Glasby. 21 00:02:02,740 --> 00:02:10,530 We have the prototype screen from 170 to 16, zero zero to 100 to 200 zero zero. 22 00:02:10,750 --> 00:02:20,020 So within this range you can assign these Glaspie IP addresses to your local network computers and the 23 00:02:20,020 --> 00:02:25,640 default subnet mask for Class B IP address when used to refer to zero. 24 00:02:26,640 --> 00:02:27,890 So don't worry about that. 25 00:02:28,060 --> 00:02:34,030 Mask will cover everything in the next room and the number of networks is sixteen thousand and number 26 00:02:34,480 --> 00:02:34,700 six. 27 00:02:35,980 --> 00:02:44,800 Now let's see what ocracy, uh, the private label does when used 100 162000 to 120 to 160. 28 00:02:44,920 --> 00:02:45,940 A tooth for a tooth. 29 00:02:45,940 --> 00:02:48,430 For a tooth. 30 00:02:48,430 --> 00:02:49,060 For a tooth. 31 00:02:49,060 --> 00:02:50,470 For a tooth 4.0. 32 00:02:50,800 --> 00:02:56,030 And we can create these really networks and with the number of hospital network are two, three, four. 33 00:02:56,770 --> 00:03:05,770 So, one, you need to give some importance to the class and the class in the car you use it for the 34 00:03:06,130 --> 00:03:08,740 smaller organizations are at least home. 35 00:03:10,110 --> 00:03:16,830 In our homes, we use the currency prior to the threat, even I showed you my IP address, it's one 36 00:03:16,840 --> 00:03:18,930 and two and three. 37 00:03:21,490 --> 00:03:25,210 Because we will see that in the next. 38 00:03:25,720 --> 00:03:32,530 But let's consider the number of hospital networks, so you have one network in your home and you can 39 00:03:32,530 --> 00:03:37,220 maximum said these private IP to two to four hosts. 40 00:03:37,570 --> 00:03:45,010 So in your home, even if you take laptop, mobile phone, smart TV and any other Iot device which connects 41 00:03:45,010 --> 00:03:48,520 to the Internet, that's an IP address which connects to a router. 42 00:03:48,520 --> 00:03:49,390 That's an IP address. 43 00:03:49,390 --> 00:03:49,660 Right. 44 00:03:50,080 --> 00:04:00,730 And you you have like 10 or 20 or 30 devices and 244 four is very large enough to hold the other devices, 45 00:04:00,730 --> 00:04:02,840 IP addresses in small home. 46 00:04:03,610 --> 00:04:08,630 So that's why the currency is built into the router. 47 00:04:08,650 --> 00:04:15,080 I mean, the starting to hit TV service, the settings will be the one and two one six zero zero two 48 00:04:15,080 --> 00:04:15,550 to this one. 49 00:04:15,580 --> 00:04:20,610 You can change if you are using that very large business organization to which is crustier. 50 00:04:21,070 --> 00:04:27,920 That's why the routers default DHP service set to this crazy private IP address range settings and allows 51 00:04:28,090 --> 00:04:30,700 you to seize this back address. 52 00:04:30,910 --> 00:04:36,770 And she's you can sign minimum's like there is no place like this under the regular one. 53 00:04:37,120 --> 00:04:39,400 So what the means? 54 00:04:39,760 --> 00:04:41,230 It's our computer. 55 00:04:41,410 --> 00:04:42,990 It's pointing to our computer. 56 00:04:43,000 --> 00:04:44,050 It's localhost. 57 00:04:44,500 --> 00:04:49,960 When you are doing some experiment, you open up a server on your computer and you use this address 58 00:04:49,960 --> 00:04:54,520 to refer to this computer and this one. 59 00:04:54,520 --> 00:04:57,820 Here they go, some wrong muskies. 60 00:04:57,820 --> 00:05:00,190 Also the Congress course. 61 00:05:00,820 --> 00:05:01,830 It is beautiful. 62 00:05:03,130 --> 00:05:10,030 And you can also put the words on not one, that one, not one, which is also Eurocracy and one that 63 00:05:10,030 --> 00:05:12,510 is on a tour of poverty, is also Uroboros. 64 00:05:13,880 --> 00:05:21,950 I have tried this and it works, so you can have one hundred thirty one dollars that development work 65 00:05:21,950 --> 00:05:27,180 to do it, so we can have all these IP addresses points to her own computer. 66 00:05:28,220 --> 00:05:32,000 So let's see, what is this different network mosque. 67 00:05:32,570 --> 00:05:42,410 So this network mosque has provided but before that network, when they are creating these networks. 68 00:05:43,010 --> 00:05:51,660 And what this does is you will take an example and look at this one nine to do that one six two zero 69 00:05:51,690 --> 00:05:52,500 zero zero. 70 00:05:52,640 --> 00:05:55,520 This is our private IP address. 71 00:05:56,420 --> 00:06:03,810 I have my home and I have set up a router which gives the IP address from here onwards, man. 72 00:06:04,020 --> 00:06:05,200 And you do not want to share. 73 00:06:06,020 --> 00:06:12,590 And if we convert this every offer from this multiple-entry, I get this one, this one here in the 74 00:06:12,590 --> 00:06:20,630 binary one one six zero dot 168 in binary, one zero one zero one zero zero zero dark and zeros or zeros. 75 00:06:20,630 --> 00:06:27,310 And so I have written this one this morning to try to reform it. 76 00:06:28,220 --> 00:06:36,750 OK, now they have said that before the subnet, Moscow is 250 further to further to go. 77 00:06:38,000 --> 00:06:41,420 Know if I can talk to to put it into binary. 78 00:06:41,630 --> 00:06:42,470 I get this one. 79 00:06:44,100 --> 00:06:48,020 Two terminals are ones and second octet is also to activate. 80 00:06:48,500 --> 00:06:54,130 It also gives the Avants and same and zero means Arjuna's. 81 00:06:54,530 --> 00:06:57,980 Not what I want to do is to get a number of those. 82 00:06:58,190 --> 00:07:06,530 I need to convert this to binary to have already done and I need to do the an operation between my IP 83 00:07:06,530 --> 00:07:09,140 address and this subnet mask. 84 00:07:10,690 --> 00:07:18,250 So this is my IP address and this is my subnet, and I am going to place in operation and we have already 85 00:07:18,250 --> 00:07:20,820 seen this operation and no transaction. 86 00:07:20,860 --> 00:07:23,310 You can check the video if he has to. 87 00:07:23,710 --> 00:07:26,500 So one, one and this one. 88 00:07:26,740 --> 00:07:27,100 Right. 89 00:07:27,400 --> 00:07:28,240 And one one. 90 00:07:28,750 --> 00:07:33,010 That number gives one, if anything one because it gives digital. 91 00:07:33,220 --> 00:07:37,470 So you can see here there are plenty for bitrate. 92 00:07:37,630 --> 00:07:40,830 These are twenty four ones, eight once a consequence. 93 00:07:40,840 --> 00:07:41,560 Twenty four ones. 94 00:07:41,680 --> 00:07:47,930 So you can call this subnet mask as Rashbaum default to the shortcut for this subnet mask. 95 00:07:48,610 --> 00:07:52,780 So the slash number twenty four twenty four. 96 00:07:53,670 --> 00:07:59,390 This is the number of once you know subnet mask from left to right number of continuous ones. 97 00:07:59,890 --> 00:08:02,910 So this is slash twenty four and you can see these are duros. 98 00:08:03,280 --> 00:08:08,830 So the digital spots indicates that the host addresses. 99 00:08:09,520 --> 00:08:17,310 So here from Rostock that you can change to get a Hofstadter's. 100 00:08:17,560 --> 00:08:26,590 So if I change to Rashtriya to one I get one to 160 that direct one change to this one I get one nine 101 00:08:26,590 --> 00:08:28,260 two two one six zero two. 102 00:08:28,450 --> 00:08:30,130 So we change all these bits. 103 00:08:30,280 --> 00:08:38,200 I can generate those many host addresses and I can assign those addresses to my computer or laptop or 104 00:08:38,200 --> 00:08:39,130 any other smartphone. 105 00:08:39,460 --> 00:08:41,890 So this is called Hostelry. 106 00:08:42,520 --> 00:08:46,270 And this all this is called subnet by the network. 107 00:08:47,260 --> 00:08:48,920 This indicates one network. 108 00:08:48,940 --> 00:08:52,360 So 192 168 of GIRoA indicates one network. 109 00:08:52,600 --> 00:09:00,760 And this one, two, three, four, one, two, not for the first to our host IP addresses so I can 110 00:09:00,760 --> 00:09:04,260 assign one nine to 12 on that one to a computer. 111 00:09:04,510 --> 00:09:09,080 One need 168 of three to my smartphone. 112 00:09:09,250 --> 00:09:14,320 So this three octets ruminative because they belong to the same network. 113 00:09:15,950 --> 00:09:24,800 And we can change this big one to generate another network, and I can change this to try to sell it 114 00:09:24,800 --> 00:09:25,380 on the network. 115 00:09:25,640 --> 00:09:29,960 And in that way, I can generate these many number of networks. 116 00:09:31,620 --> 00:09:37,890 But in the whole it's unnecessary to create those mini networks, because even in one network, you 117 00:09:37,890 --> 00:09:40,230 cannot have 256 devices in your home. 118 00:09:40,260 --> 00:09:47,520 That's why generally we use 192 that one zero zero one two, three, four, five, six on it to send 119 00:09:47,520 --> 00:09:48,360 the hostess's. 120 00:09:48,990 --> 00:09:57,720 Even when you are in operation between a person subnet mask, you get the same three octets as the IP 121 00:09:57,720 --> 00:09:58,040 address. 122 00:09:58,050 --> 00:10:02,280 Right, because we are doing it and it's one and it's the same putting it. 123 00:10:02,550 --> 00:10:05,610 And this last octet is differentiate. 124 00:10:05,670 --> 00:10:13,210 It means really discuss the host IP addresses and the directions have been mascaras for hosts. 125 00:10:13,410 --> 00:10:17,400 That means you can change these gyros and put some values. 126 00:10:17,400 --> 00:10:22,700 We get the host IP addresses, we can assign those IP addresses to the devices on our home network. 127 00:10:23,920 --> 00:10:31,030 The ones that have been most the network, but we have already seen this and we get plenty calls for 128 00:10:31,030 --> 00:10:34,630 support for this crisis subnet mask. 129 00:10:38,050 --> 00:10:43,430 In short, we can not disappear on the floor, so controversial, no, once in a. 130 00:10:44,920 --> 00:10:48,690 So we have already seen that happen for once and we caught it. 131 00:10:50,260 --> 00:10:55,270 And you can see for the last year, there are only eight ones. 132 00:10:55,270 --> 00:10:55,580 Right. 133 00:10:56,200 --> 00:10:56,980 Means eight once. 134 00:10:57,130 --> 00:11:00,460 And you can define the subnet mask in the short form, slash eight. 135 00:11:01,330 --> 00:11:07,250 And for the Krosby, there are 16 once because there are two of the two who have to face. 136 00:11:07,390 --> 00:11:10,770 That's why you can define this as a short form. 137 00:11:11,050 --> 00:11:12,340 And obviously you can. 138 00:11:12,340 --> 00:11:15,340 Secrecy's subnet mask 24 24. 139 00:11:16,240 --> 00:11:22,840 So this is the shot from every we can order to Veracruz to cover the shortfall. 140 00:11:22,930 --> 00:11:27,060 And we can divide this network into smaller subnet, far safer for subnet. 141 00:11:27,190 --> 00:11:35,110 So the manager asked you to create four subnets for this one and two to the 168 zero, one to the force 142 00:11:35,110 --> 00:11:35,600 of nature. 143 00:11:35,890 --> 00:11:36,600 How many holes? 144 00:11:36,610 --> 00:11:38,380 We got 256 hosts. 145 00:11:38,680 --> 00:11:42,520 So we can create 256 hosts, but we need four subnets. 146 00:11:42,520 --> 00:11:50,590 So you what you want to do is you do a 256 with four number of number of subnets request 256 before 147 00:11:50,590 --> 00:11:51,220 you get this. 148 00:11:51,520 --> 00:11:52,060 Sixty four. 149 00:11:52,060 --> 00:11:52,320 Right. 150 00:11:52,540 --> 00:11:58,630 So you can see four to six to four hosts to one subnet and the second 64 host to another subnet. 151 00:11:58,630 --> 00:12:04,040 And next for an exit to another subnet like that we can create four subnet. 152 00:12:04,390 --> 00:12:10,840 Let's see the first subnet, 192 168 one, two, one, two, one, two. 153 00:12:10,840 --> 00:12:11,350 Sixty four. 154 00:12:11,360 --> 00:12:11,580 Right. 155 00:12:12,130 --> 00:12:14,640 It's one nine two zero one 168. 156 00:12:15,180 --> 00:12:18,250 One, two, one, two, two two one, one, two, three, four. 157 00:12:18,460 --> 00:12:27,580 So these 64 IP addresses can form a one subnet and next to each four from 65 to 128, we can form an 158 00:12:27,580 --> 00:12:30,250 address from 191, 192. 159 00:12:30,250 --> 00:12:35,030 We can form another subnet and from one to prove to what we can do. 160 00:12:36,700 --> 00:12:38,880 So in this way, we can form four subnets. 161 00:12:39,070 --> 00:12:44,530 And in this subnet, if you look at the starting address, this is called Network for the subnet. 162 00:12:45,040 --> 00:12:47,800 So 192 to 160, that one is connected. 163 00:12:48,250 --> 00:12:51,490 So if you see the second subnet, you can see 64. 164 00:12:51,730 --> 00:12:52,840 That is the starting one. 165 00:12:52,840 --> 00:12:57,550 And it is Connect Kirkcaldy for the subnet and one dominant one and three are the network. 166 00:12:57,550 --> 00:12:58,870 It is for the subnet. 167 00:12:59,380 --> 00:13:07,450 And if you see this one last one is a sixty four and it is the broadcast for the subnet and 128 192 168 00:13:07,460 --> 00:13:11,860 255 are the broadcast Ķiģelis for this subnet. 169 00:13:12,040 --> 00:13:19,270 So this broadcast notice you use it for transmitting data to all the computers in the subnet. 170 00:13:19,750 --> 00:13:20,110 Right. 171 00:13:20,500 --> 00:13:23,350 That is the usefulness for this broadcast. 172 00:13:23,620 --> 00:13:26,260 And with the network you can identify the network. 173 00:13:28,480 --> 00:13:36,290 So we can have beautiful horse, but you can say to 56 horse flu ascender that. 174 00:13:38,200 --> 00:13:44,920 So that's all you need to know about the subnet mask and you need to really focus on this crazier and 175 00:13:44,920 --> 00:13:52,730 crazier, but at the strangest network mosque and these two, this gas is used in organizations and 176 00:13:53,070 --> 00:13:55,250 you use it for home networks. 177 00:13:55,720 --> 00:14:00,790 So this is somewhat very basic problems. 178 00:14:01,090 --> 00:14:07,200 And you can also see some Advanta problems on sublimity, but this is the basic one. 179 00:14:07,840 --> 00:14:12,150 So that's sort of what you need to know, something from the industry point of view.