what is osi model in computer networks

transparent transmission of the bit stream.The function of physical layer is to realize the transparent transmission of bitstream between neighboring computer nodes, and to shield the difference between detailed transmission media and physical equipment as much as possible.The data link layer above it does not have to consider what the network's detailed transpo

environment.In order to make the network application more popular, ISO has introduced the OSI Reference model. The implication is that all companies are recommended to use this specification to control the network. So all companies have the same specifications, they can be connected. Computer network systems that prov

Tag:httpioosarsp Data divon code The Http://baike.baidu.com/view/69334.htmMAC (Media Access Control) address, or MAC location, is used to define the locations of network devices. In the OSI model, the third layer of the network layer is responsible for the NBSP;IP address, while the second layer of data link

architecture of the anemia model and the congestion model. Model of anemia model of congestive model of anemia the organization domain logic typically uses transactional scripting patterns, allowing each process to correspond to an action that the user may want to do, each

Computers are connected to the network every day. Nowadays, there are countless Trojan viruses on the network, and viruses will inevitably happen one day. So what should we do after the virus? The correct solution can avoid greater losses and minimize the damage caused by viruses. Let's take a look. I. MediumVirusSymptom When your computer is infected with viruse

calculation, the result is the same.In this example, there are differences in the results, indicating that there must be random components in the system.The random parts of machine learning are usually as follows: 1. The disorderly sequence operation of the training sample; 2. Random gradient descent; 3. The model randomly assigns the initial value.In this example, there

Synchronous Optical Fiber Network (SONET) is an optical fiber transmission standard that focuses on the physical layer in the OSI model structure. Like SDH in the world, SONET was initially designed for the transmission of voice traffic over optical fiber networks. Like the first layer physical layer protocol, SONET

the rub net software carefully. About the harm of the network software, please refer to the wireless router How to prevent the network against black? B. Regular replacement of wireless passwords Sometimes, we may inadvertently leak the password or be rubbed against the net. In order to avoid long time using the same wireless password many unsafe factors, recommends the regular replacement of wireless passwords, so as to better protect the safety of wireless

previous versions of FF, the plug-in vulnerability has been fixed, so FF cannot complete the dark Data Warehouse through memory. Because the file operation FF does not provide support (data transmission cannot be completed through cookie cross-origin), this technical method can only be used in IE. 5. In combination with the preceding methods, when accessing website a, request website B to complete data processing and obtain the desired results based on the returned ID. The disadvantage of this

Tags: class business body Difference Telecom diameter bring APN dynamic"Technical stuff." What is the difference between the user database HSS in LTE networks and the HLR of traditional 2g/3g? Can I combine networking?EPS HSS and HLR are respectively responsible for 4G user data and 2G/3G user data storage, the two main differences are:(1) different stored data,

What is the basic computer system and what is the basic computer system? What's the operating system? First, we need to know,Why is there an operating system?. A modern

How is the computer fast? What is a computer shortcut ?, The computer shortcut is When we use computers in our daily life, we often need to use them.

What is the reason for the computer card? Computer card how to deal with? The reason why computers are getting stuck here is summed up as the following main points: One: computer virus causes

We know that the motherboard and CPU are supporting the use of, only know what type of motherboard, to know what CPU can be used. You often have friends who need to upgrade your computer, but do not know what type of motherboard your computer

Recently, a netizen asked small make up such a problem: want to find their own notebook information on the Internet, but do not know what the model of their laptops, how do you think the notebook computer model? For this problem, many novice friends will ask, because to see notebook configuration, related to the hardwa

After the term "view model (View-model)" appears, many developers have a lot of questions. It is clear that the view model needs to deal with the intersection of views, models, and external services, but the precise approach is often carried over by a single stroke.

What is the purpose of the controller in MVC? what is the difference between it and the model? I just learned the MVC framework. What I cannot understand is that the controller.

What is the purpose of the controller in MVC? what is the difference between it and the model? I just learned the MVC framework. What I cannot understand is that the controller.

What is a CSS box model? After all, when learning CSS, CSS box model can often be seen, so the next article in the PHP Chinese network with everyone to talk about the concept of CSS box model and the CSS box model understanding.

layered? To achieve high cohesion and low coupling ". Divide the problem into various solutions, which are easy to control, easy to extend, and easy to allocate resources... In short, there are many advantages :). 3. The following describes the JAVA and J2EE models and frameworks: What are common design patterns? First, you need to understand the book GOF's design patterns-the basis for reusable object-oriented software (this can be said to be a must