دوره نتورک پلاس - معرفی دوره نتورک+ و تعاریف اولیه مهم شبکه - جلسه اول

I promised you that I will fully

hold the Network Plus course. Today is the first session and we want to

start reading the book together and understand what comes to us and what

does not come to us in this course, what is this course about, and what expectations you should have of

yourself at the end of the course. Stay tuned. Hi, I'm Ardeshir Kaviani and this is the 4rahecomputer. And as I promised you, today is the first session

or the zeroth session of the Network Plus course. First of all, let me clarify something with you. Network Plus course videos are recorded in this mode. That is, I sit and look at you from this angle. The things I'm going to explain

to you and explain in this way and the topics that should be discussed

in the computer, we go and see in the computer. And I really can't do a lot of editing on these videos. Because I want to release these videos on Tuesdays every week. And I have time to edit the video on Tuesday morning

and I want to publish it by force. So we don't have a lot of time to edit the videos. If I make a mistake and, for example, fix something, you may see that it exists in the videos. And this is an important point that you should be aware of. If you go to any class, the same happens. The teacher may say something wrong in the class and then fix it. Make a mistake, something happens. I don't want to delete these things because it can help. You see a series of things and see

that my teacher may make a mistake somewhere. He may be distracted and say something else

and then fix it. But if I say something and then I feel

that he has ruined the academic load Or I said something that is completely wrong, I delete it. Now there is a possibility that it will happen again. After all, humans are allowed to make errors. Well, we want to go and start the Network Plus course together. First, let's see where this course has come from. Who is the company that has trusted this course? What is it and how is it? Let's go to the computer. Well, let's search. First, search for Network Plus. I found these books. Let's see what it brings up. We have to connect NetworkPlus to each other. Network Plus is owned by CompTIA. I open it. Look there is a ton of videos here on YouTube that you can watch. But it's in English and I'm speaking Farsi this time. CompTIA is a company that tests Network Plus in the world. You can participate in the test. This is its logo. It's good to know it. And now we see what it is about. Note that it has given a number of

explanations on its own site. Where you can find a job And what you'd do We'll talk about all these things together. Well, the first and most important question. Is it worth it for me to go and test it? To be honest, it's very good in Iran. First of all, the test is very

difficult to hold in Iran. Secondly, in Iran, companies are looking for

people who have a lot of information. And having a ceritificate of Network Plus

is a basic part of the job. So you have to know Network Plus. The certificate isn't useful much. Wherever you go, you can learn. You can read Network Plus yourself. You can go to the class and participate. I myself am a student of Professor Amir Choupani. I suggest that if you want to go to his class,

definitely go to Network Plus. Because Network Plus tells you things that

are very different from other places. And it levels up your base and your brain. I'm trying to pass on what I've learned from him to you. So that you can see them and learn. Because unfortunately, his class is only in-person. And now that this outbreak, classes are not held anywhere. That's why. That's one of the reasons I decided to say this time. But every teacher who takes Network Plus

and then wants to say his lesson. If it's a fine teacher, his Network Plus is very good. And if you don't pass that Network Plus,

you won't be able to do anything else on it. You have to pass Network Plus like that. Many of my teachers say a little bit of Network Plus. They divide the rest in a course. And I don't do this. I really want to say Network Plus. I also bring the rest of the things into this course. Network Plus is very, very much a theory and has no practical work. But I know that if I were to give a class like this. And just say theory, you won't be interested. That's why. Alongside the theoretical work,

I also tell you the practical work. I say let's do this practical work. And yes, I want you to do this work. Probably, now we have to see how it is. Maybe we'll make a group on Telegram. Or...

Telegram is better. And let's exchange a little bit there. I put books, files, and anything that can't be added to YouTube. I put it on the Telegram channel. I'll give you my address. And it's in the bio of this video. You can see it from there. Well, this is Network Plus. What is Network Plus now? We understood what the exam is for. We have to know it. But what is it? The base and foundation of computer networks

is based on Network Plus. You have to know this to be able to do other things. If you want to learn Windows, go to a network and work. Until you don't know what a star network is, until you don't know how cables are connected, until you don't know the switch and router, you can't do this. In the course of Network Plus,

we put the complete base of the network. We talk about everything about hardware here. We talk about network topologies here. And, and, and, and a lot of other

things that we're going to see now. Well, now we're going to go to where to read. The source that I want to start from, and teach you, and you have to prepare it and read it. What is it? Everything has to be clear. Let's go to the computer. Well, as you can see, this book is the

source we're going to learn from. It's a book of 1011 pages. It's a book by CompTIA. That is, this book is CompTIA Network Plus. The book has been published by Cebex or Cybex. It's by Wiley. Wiley is very famous. You probably know Wiley from a series of Fordhamis books. This book is a study guide. That is, you can read it yourself and start learning from it. It's the fourth edition. And I think the study guide has only come to the fourth edition. This is one of the books that exist and you can read. Look at the page number, 1011. There is another book. This is an exam guide. It's the same Network Plus, but it's an exam guide. This is the sixth edition. This is designed for testing. That is, if you want to take test,

you can only read this book. But this one has more explanations. You can read it yourself and learn. I want to teach on this book. Because it has published the best publications. It is also longer and better But I decided to put both books in

the Telegram channel for you. The next point is about the Network Plus exam. The Network Plus exam changes once every three or four years. The exam is called Network Plus N10. Then it gets a Hyphen and a number. 001, 002, 003 Until today, 007 has come. In 2018, N10, 003... N10, 007 came. And I think it will be available until 2022. Whenever N008 comes, a nine-month period is also available. You can test any of them. If you live abroad and want to work somewhere

that says bring the CompTIA cerificate. Be sure to take the last version. If one day you want to emigrate from Iran. And somewhere said that I want you to pass the Network Plus exam. Try to test in a time period. That a new exam has come. And you can pass that new exam. So that your cerificate would expire sometime later. Now, is it really necessary? Is it not? I talked about it before. I said that if you are in Iran, you should know this basic. Even if you are abroad. If they said they want to test this. If not. Higher grades. After you have passed this round. You can choose. I want to go to MCSA. I want to go to MCSE. I want to go to Cisco. I want to go to which field of the network to work. Those certificates are more valuable than this one. I said this is the base. We all have to know. Well, that was the test. So, the two versions we are now teaching. In general, it is N007. It is N10007. And now this is the fourth edition. The fourth edition. That one is the sixth edition. Exam guides always come with more editions. Because the exam is starts to change. Now, how much is the exam? How is it? It's all in the book. This is the book you wanted to pass. You see. I did not pass the book from its place. We read and see Many of them together. The next question that comes to you is. What do I do with a network plus certificate? And what can I do? In Iran. I say it again. With a network plus cerificate. You'd probably not get a job related to Network But if you get Windows 8 cerificate Windows 10. Or for example, get MCSA. That's when you'll find a job If you go to read Cisco. That's when you'll find a job This is the base. You have to learn. It's like an alphabet. We have to learn. And learn it well. Because if you do not learn it well. There in Cisco. You have a problem. In MCSA. You have a problem. And so on. Well. So this is very important. See. I repeat something a few times. Because you know. This is not an easy course. It is a very, very important course. And the base of the principle is set here. Many people. Without reading Network Plus. Or a little bit on their own. By self-studing They go to Windows 10. They sit. They sit on Cisco. And then they say.

The network is very difficult. It is nonsense. You do not even know what to do. Because the base is wrong. If Your base is right, it'll be fine This is the network major. The rest, will network be right for you

if you're learning programming? definitely! You have to learn Network Plus. Why? You're programming and

You want to socket program You're programming and

At some point you should connect Two networks to be installed. In writing program You have to know the layers. You have to know how it works

with layers and stuff You have to know what portocole it works with. Windows used to work with one portocole,

Mac with another portocole, and now they are both working with TSPIP. You have to know what TSPIP is so that

you can write the program correctly and work for it. So if you are reading other programs other than the network,

this course is good for you and it is good to learn this course. Let me say the last point. We are going to start reading from that book and we also want to

read the study guide book, but we are not going to do everything based on this book. I will try to start reading based on

this study guide book. I'm not going to read the book for you, 1000 pages!

I just see them and give you an explanation It is better to read the book, it is also good for your

language and your English will improve. That is, I may not say a point and it is in a book,

so it is definitely better to read the book. But I also add a number of things outside the book and say,

so don't think that only the book is enough. This book and these videos are complete with each other

and complete this course together. If someone is not going to read the book,

he should know that he is lagging behind the rest. Because many of the guys around me know that they are starting to read the book. Now, how do we read the book? Our language is not very well. I will talk about all of these and give you some tips. I try to say everything with the guide. I say, this is how you should do this. The main point I want to say is that what

we say is right for the exam. But if you want to read for the exam, because the price of

the exam is very high, you must definitely take tests. There are tests, be sure to start testing and then go to the exam. Don't give an exam and see that you don't know,

we'll talk about it later. Well, let's go to the computer and start the Network Plus course together. Well, as you can see, in front of the book,

here is study guide and let's start. If you want to take the exam and bought this book,

you can get a 10% discount in the exam with this code. The price of the exam is $ 35, that is,

$ 350 is the price for exam. You can use this code. Of course, I don't know if this code

still works after the book has been published like this or not. And let's move on... the book's description,

About the writer Let me enlarge it a bit. In the first chapter, we're going to read about networks. In relation to what networks are, we learn about physical

networks, we learn about topologies. And then at the end of each chapter, there is an exam,

and then we read about Open System Interconnection Specifications. And there are other things that I don't want to talk about here anymore. You can look at the chapters yourself. The next important point that we want to talk about

in this book which is an interesting one. This is also the first of all the books. The company itself publishes it. Explanations, what this course is about, I told you about these things. And why you should get a Network Plus Certificate. And these are some points about the exam. If you want to take the exam, what you should do What does this book cover? What does it talk about? Explanations. The same explanation that I gave here earlier But there are names in each chapter. What are we talking about? In chapter 2, it's about this. For example, in chapter 7, we're talking about IP addresses. And we say, how are the IP addresses? What is DHCP? Let's go here. Aha! This is the part that was important to me. If you want to take the exam, The book is telling you here. We have 5 concepts in the exam. 23% of the networking concept is asked. 18% of the infrastructure is being tested. Let me say something here. I don't know what infrastructure means. I want to understand the meaning. Or I have to choose from these tools that we have here. I want to understand its meaning. This is an important and essential tool for you. You have to have it. You open Google Translate. You put English in Persian. You don't know anything. You copy it quickly. You understand the meaning. It's construction. So, 18% of the questions are asked under construction. 17% of the network opcoursetions are given. 20% of the network security. 22% of the network troubleshooting and tools. Now we understand what the questions are. On the basis of what each of these are. For example, I don't know the network concept. What does it mean? The book says the objectives. Let me put this together. These are the network concepts. What is SSH? We talked about it in chapter 6 and 13. In total, everything that was discussed in chapter 5, 6

and 13 is 23% of our test. And here it is explained. This is explained in this chapter. This is explained in this chapter. I'm sorry. This is chapter 1, 1. This is chapter 2, 2, 5, 6. This is chapter 1, 3, 4, 5, 6, 7, 8, 9, 11. It says one by one. So you can understand that if you want to do anything in the exam, you have to know how to read each chapter. This is a very important point. This book is very interesting. For example, infrastructure. It is chapter 3 and 4. Then chapter 5, 12, 13, 15. And these are the things that we go ahead like this. Well, I'll skip these. If you want, you can read it yourself. We have a test here. Assessment test. What does assessment mean? Do we know or not? If we don't know, let's go and search it right now. Well, I'm going to search to see. This is a very common thing. And there is no problem that you don't know. Guys, it's not a shame not to know. You don't know anything and you have to go and find it. It's not a shame not to know, but it's a shame not to ask. You have to ask and learn. But it's not that you come and ask me. Ask Google first. If you don't know a word and its meaning,

ask Google Translate first. Ask. If you don't understand, leave a comment and say, Sir, what does this mean? Explain this a little more. Now, either by comment or voice or video, I explain something. But this is the point. You don't know everything. You have to go and search. This course and any other course. If you want to be a network engineer. If you want to learn how to work with the network. Work with a computer. You have to be a good researcher. Go and search. The best tool I can give you and the best site that exists is Google. Go to Google and search. See what it is and how to get rid of it. Then if you don't understand, come and ask. Don't ask first and then say. Then I can tell you to go and search. Because I often say go and search. Its meaning is very clear and clear. So this is how you understand the meaning of anything. Assessment. Sir, this test is Assessment. He gave 40 tests to the book and said, If you are a beginner, take these tests and see if you understand the meaning. See how far you are. Understand how far you are. Do you know what it means completely? For example, let's say test 5. Which RG rating of coax is used for cables modem? Which RG cable is used for the modem from coax? You have to choose one of them. Now, how do you know the answer? First, please do the test for yourself. Then come here and say the answer. For example, 5 says RG 6 is used for this. Go and read chapter 3. If you don't know what to understand, sir, it's like this. This is one of the tests that exist for you. Well, now we want to go and get into the book. Let's go and see what the networks are. And learn the types of networks. What we are going to learn. The following CompTIA Networks exam

objectives are covered in this chapter. Things that have been covered in this chapter. Logical and physical. First of all, about wired topologies. That is, topology means infrastructure. Topology in Persian. I don't know what to say. Topology. I think it's a network map. Topology means topology. For example, a network map is a good thing. Let's see what maps or topologies exist. From the type of wired. Wired means cable. First, let's get them through logical and physical. Then let's read star, ring, mesh, bus, CAN and SAN to find out what they are. Well, let's go to the first definition. The first and most important definition we need to learn. What is it? What is a network? What is a network? And what is it made of? The best and simplest description I can give you to start with. The description can change over time. Be careful. As we go forward, we get to the point where I tell you what it was. Well, now this is also added to it. First of all, we have to tell you in a calm way. Small. Let's make it bigger and bigger. To form what we want. The first description that can be made of the network is that Two computers or two other parts. For example, a computer and a printer. For example, a computer and a mobile phone. connect them together. And these two can be connected to each other. We have created a network. Now here. If I connect this computer to this

computer with a cable or wireless. I created a small network. If in your company, if in your house. You have four computers, four houses. Put a modem in the middle. Connect all of you to that modem. And be able to connect to each other. You have created a network. Look at the picture. Look, it says here. A computer or host is here. Another computer or host is here. And a printer is here. This is a small network. A basic network. Which is set up here. Another description for the network can be that In order for the computers to be able to share

their resources with each other. We use the network. Now the computer here is connected to the printer. I want to be able to print from this computer. So I create a network. This computer can also use the printer from this computer. So we call it a network. What is this section here called? It is called Shared Resources. Or shared sources. Let's go to Google Translate. Let's see here. Shared. Sorry. Shared Resources. Common sources. You see. I will write for you. If you want to write or learn. You can write. A very important point that you should be aware of is that Guys, you have to take notes. You have to have an notebook for yourself. Start writing these. Maybe these definitions are not important now. But as we go forward, we will return to those definitions. We will return to them. And I will try to tell you what is very important to write. Maybe you know better than me about taking notes. This is one of the things you have to write. Shared Resources. It's common source. And I suggest that you choose the end of your notebook as a dictionary. Write your words. Write its English meaning here. Go to Google Translate and check the pronounciations. Just know its meaning completely. Let's see the pronounciations. Shared Resources. It says Resources. Shared Resources. It says Resources. Well, I said Resources. Now what can these Shared Resources include? It can be a printer. It can be a scanner. It can be a hard disk. It can be our files. Let's add a series of files here. They are our Shared Files. It can be the DVD Writer of this computer. We have two computers. It can be a DVD Writer. It can be a computer scanner. We can put it there and scan it from another place. If you go to a large organization,

you will see that they do not put a printer on each table. Of course, many old organizations have done this. They put a printer on each table. So that everyone can get their own printer. But if your organization is a little more professional, They bought a big printer. They put it in a room. And everyone connects there and sends their print there. They go there and come back. This is the right way. Because there is a lot of expenditure in these things. What are the advantages of the network? The first advantage is that it speeds up. If I want to transfer a file from here to this computer, I don't have to use a flash disk copy the file here. come and put it back. I copy it again. Once I say on the network, go and copy it there. Or I go from here and give it to you. Get out of here. This is the speed. Speeding up. The ease of work. How much easier it is for us. The cost. The cost is the same as the printer. If I want to buy five printers, I can pay for two printers. I can buy a much more expensive printer and put it in the middle. I can send every five with that printer. And there is no problem. You don't even need a computer to stay on for this job. New printers connect directly to the network. So you can do this job. installation of these things and working

with them is not in this course. But I want to tell them. Let's go a little further. We try to create a small network. When we know the pieces. We share our resources and use them. The important point is that we can't share all the pieces. For example, I can't share my keyboard and use two computers together. Or I can't share my mouse and use two computers together. This point should also be your attention. When we talk about a network, you've probably heard two words. LAN and WAN. Now let's see what these are. We can use computer networks from a geographical point of view. This is just one of the standards. We also have other standards. We can divide them into several categories

from a geographical point of view. We call small networks LAN. And we call big networks WAN. As I said, this is just one of the standards. And we have other standards. Right now, there are some other things in the

middle between LAN and WAN. But from the logical point of view of the network. Note that the network was written from a logical and physical point of view. From a logical point of view, we have two networks. LAN and WAN. Small networks and big networks. From a physical point of view, our networks can be divided into sevcoursel hands. But in the end, you have to learn both LAN and WAN. These two are not the most important for us. Of course, in the DATAPLUS exam, we learn from other networks. Now we see the questions at the end of this season. But we need to know these two. Now let's see what LAN is. LAN or Local Area Network. Whenever you make a small network. You connect two computers together. Three computers. You've made a room The computers are connected to each other. Another room is connected to the other side. These are all LAN networks. If we have a room here where five computers are connected to each other. And we have a room on the other side of the house

where two computers are connected to each other. Each of these is two LANs. Now, if we come and look at the book Now, if we come and look at the book Connect a few computers here. We have three computers. This is our marketing part. We have a switch that we now know what it is. We have a printer and two servers. These are connected to each other. This is the other side of our room. That's the other side of the house. We have another room. This is our sales part. There is a hub and a server. Whenever we come and connect these two through a cable. We are connecting two LANs to each other. But in this case, this LAN is now separating itself. This LAN is separated. If I want to send a file from this computer to the sales part. I can't. Because the cable in the middle is not connected. As soon as we connect a cable. We can easily reconnect both sides. So we call each of them a separate LAN. Separate means separated. Separated. Separated. We have a separate LAN here. We have a separate LAN on this side. In the next shape, we see that we came and put a router in the middle. Now we know what a router is. It's too early. We don't know exactly what a router is. Maybe you've heard of it. Your home modem is also a router. But you don't know exactly what it is yet. And we came and connected these two networks together. We connected our separate networks together. And it has become a router connects LAN. A router can connect two networks together. Now there is an important definition that you should learn. The first layer of our building is a LAN. The second layer of our building is also a separate LAN. And these two have nothing to do with each other. Now if I came through a router. Or through a cable. I pulled the cable from the switch. I connected these two networks to each other. Did I form a WAN network? Or is it a LAN network again? Theoretically, if we want to be correct. We also have a LAN network. Because our environment is the same. The geographical value has not been determined. That we want to connect these two networks together. We can. Put it in WAN category. What is the definition of WAN? The definition of WAN says that whenever we

connect two or more LAN networks together. We have formed a WAN network. Now we have connected two layers in one building. It is strange that they have not been connected yet. Now we do not have to say that WAN has been established. No, we have a larger LAN network. But if we come to this building. For example, we have a building in the Enghelab Square. Tehran. We also have a building in the Ferdowsi Square. We also have one building in Jajroud. We also have another one at the end of Hemmat Avenue. Well, now that we have connected these four together. Yes, we have formed a WAN. Or we have a very large LAN network. Again, depending on what equipment is used in the middle. We can say that our speed. I mean, let's see how our speed is. We say that this is the form of LAN or WAN. In order not to be too confused. Know this way. We have LAN and WAN equipment. What is the highest speed? In LAN. It is definitely faster for a small place. Whenever we use LAN equipment. Our end network is LAN. Whenever we use LAN equipment in one place. In order to connect it to another place. Use WAN equipment. We have created a WAN network. We are in today's LAN networks. Our speed is 1000 Mbps. 100 is dead. Well, forget it. 1000 Mbps. Now, if we come. This network that we have here. Enghelab building. To Ferdowsi building. We connected it via a radio. Which is also a LAN support. That is, it gives us 1000 speed. We still have a LAN. But if we put a radio. In total, for example. Its speed is 200 Mbps instead of 1000. And WAN equipment is obtained. When we have WAN. Not 200. Sorry. 20 200 is very good. 20 Mbps. We have a WAN. And we are using. Well. As you see. Now let's go to the introduction. Common network components. What are the components used in a network? We have to learn three definitions together. The first definition is workstation. The second definition is server. And the third definition is host. Let's go up. Look. Here we have a server. And these are workstation. These were host. They were host. And. Server. Now let's see what each is. Well. According to the description here. It says that workstations. Are Powerful computers. Which gencourselly. They have more than one CPU. And their throughput power. It can be used for a lot of things. Now you can read the full description. What does workstation mean? We have a powerful computer. That this powerful computer. It is supposed to be used for a special task. For example. I put a workstation here. And I want. From this workstation. Let me install 3D Max on it. Let's put our renders on it at the end. In a network where we do design work. Let's put our renders on it. Or for example. Let's use it for a specific program. But. It has a difference with the next device. What is the difference? The work it does. It is done by its own heart. The work it does. It does it for itself. The next thing is servers. The main description of the server is that. The server is a computer. Which is built to serve others. We put a server computer. Which is very powerful. But in the server. It does not do anything for itself. The server is set there. To serve others. So the server computer. In the Persian description. They say it serves. Its job is to serve others. I have a server here. For example. I put DHCP. I say the name of the servers little by little. To get to know them a little. To be familiar with you. When we want to go to it. You remember these examples. Aha. It said DHCP there. Then probably this is it. You can write these down And search yourself. These are very good things. Be sure to do it. Search. I tell you what it is. How much do you know about it. And then more. These. I put a DHCP server here. That computers in the network. To be able to get IP. And connect to the internet. So this server. It does not work for itself. To serve. And serving. It works for others. You saw it in this shape. Do not do this. The servers on this side were separate. The servers on that side were separate. For example. And our server computer. Aha. Let's see the server. Let's go to the picture. Book has named A series of well-known servers. For example. File server. That hosts our files. It is a table of contents. Mail server. Organization email server. Organization print server. Web server. All the websites in the world. They are on the web server. So we have to know the web server. Fax server. Application server. Telephone server. Proxy server. These are different types of servers. They do any special job. According to the book. It says. A network populated with servers and workstations. It says. Here are my servers. Here are my computers. And. This is the way it can be. You may be confused here. Be careful. We also call the ordinary computer. Workstation. But. Physically. A workstation computer. A workstation computer. It has a lot of power. Compared to an ordinary computer. We call it host. It has in the network. Maybe you go. take a cool computer Put it next to you. They say Physically. Workstation. But. It's supposed to be an ordinary computer. in our network. So. We call it host there. Right. The chassis of the workstation. But. In the network. We want to call it. We say. This is a host. This is a node. Actually. The node. Now we see its definition further. The next definition. Host. To any computer. The worker. sits behind it. And. He starts. working with that. We say. Host computer. Eh. Doesn't someone sit behind the server? No. There is no reason. someone sits behind a server. We have a server room. We put a series of racks. Now. You got to know all of them. These are the words. Now. I want you. Get . Your brain. Remember. We put a series of racks. We put a series of server chassis. and We closed the door.

There is no need at all. To sit behind it. I.The network manager.

If I work with a server. I sit behind My own host chassis. I hit the remote,and start working on it. So. Any computer That Is not going to do a specific job. For others. And I'm going to sit and

work on the computer And work for myself. We call host. Or Our ordinary computer. Another definition. The definition of the node. Let me tell you here. When. We want to draw the network. On the paper. We say. OK Here. For example A server.

Here A switch. .here a computer , computer , computer A printer. To any of these Ones In a network We say a node Node means a Knot

a point a point in my network A knot, which forms a part of my network It's good to know the meaning Well. The book continues. It goes. With. Wide area network or WAN Or. It explains. I gave you the explanation. And. In this way. Well. We have a. Coopcoursetion. That. Our coopcoursetion. It has a series of servers. And. Through the Internet. These two branches. Is attached to it. Branches. New language. We want. Learn together . What is a branch? Branch means شاخه This is a branch of our network Now, what did he say to this? An internetwork Why is this one small and this one big? Here we have to learn a very important definition Whenever I write the word internet in a small i

or in a big letter , it has two different meanings inter means between Whenever I write the word internet in a

small letter in a network, I mean between Let's say the internet is in a small letter I connected this network to this

network and to this network But these networks do not have access

to the main internet that we all know But if it is written in a capital letter, it means Internet So the internet network that is written in a

small letter means a network between I came to all the offices of the Iranian government

through an internal internet network Which we call intranet They do not have access to the world internet It's just their own internal network So if they say intranet or internet network or internetwork Be careful that it means though that these

networks are connected to each other But they are not connected to the world internet Now, if we write the word internet in a capital letter,

it means that it is connected to the world internet I also told you an intranet definition Now I will explain the word separately for you Intranet means an internal network that is

not connected to the internet But it gives us all the other possibilities For example, when you run out of internet You can still open your ISP website Be careful, if you open another website, it will not open But your ISP website opens Because you are still connected to your ISP intranet And you can open your ISP website There is also a web server on the internet So that whenever someone cannot connect to the other side He can connect to this side and use this service And be able to recharge his internet Well, I think it should not be too long And you can at least watch it twice Because there are a lot of important points in it And we try to close every session in about half an hour I really think it was more than half an hour today Well, the first part is some explanations about the course This is the part I wanted to explain I think it's over here I want you to do a few things in practice First, name a few intranet networks for yourself And write in the comments of this video Where is the intranet? I gave you an example about goverment offices

connected through intranet They do not have access to the main internet through this cable And they have other ways to access it There are a ton of examples Give us an example This is the first practice The second practice is what other servers do you know? There were a number of them in the book Mail server, proxy server, web server, and so on What other servers do you know? Some of those web servers Some of those servers I was cheating Web server Which was one of them write some of those servers for yourself And write in the comments Let's see what other services you know As we said, each of these is a service

that gives our server to others And the third practice I gave an example I said that if a building has a LAN to its second floor We also have a LAN You should also give an example of what LANs are And what places together If we connect, it still forms a LAN And then write to me what shared resources

you can share in your network Write what shared resources you know that can be shared on a network I hope you enjoyed the first session of Network Plus And get to know it a little Give us some time Because the first thing we want to say is a description And if we don't learn these descriptions We can never do a great job When we wanted to start learning We wanted to learn To be able to read Persian In the first year, they only introduced us to letters Then we were able to make words and sentences And move forward A child who wants to start talking First of all, we don't tell him to say a long word First of all, we say say water, dad , mom Words that they see are familiar to them We are the same We now have to put the first base in a network We have to be able to put them on top of each other Come up to be able to build a tower These are the first steps If we have to put these bases The wall will collapse We have to pay attention to this point So be patient on these first parts And be sure One day these descriptions will take your mind If you haven't learned it well And you have to learn them properly I'm Ardeshir Kaviani Here is the 4rahecomputer And this is the Network Plus course I hope you enjoyed this lesson