internet of things protocols

We use the Internet every day, have you ever wondered how it is implemented?Billions of computers worldwide, connected together, 22 communication. Shanghai a piece of network card sends out the signal, Los Angeles of another piece of network card incredibly received, the two actually do not know each other's physical location, you do not think this is a very magical thing?The core of the Internet is a serie

We use the Internet every day. Have you ever wondered how it is implemented? Billions of computers around the world are connected together and communicate with each other. One Network Card in Shanghai sends a signal, and the other network card in Los Angeles actually receives the signal. The two actually do not know the physical location of the other. Do you think this is amazing? The core of the Internet i

I. Overview 1.1 Five-layer model The realization of the Internet, divided into several layers. Each layer has its own function, like a building, each layer is supported by the next layer. What the user touches is just the top layer, and there is no sense of the layer below. To understand the Internet, you must start from the bottom and understand the function of each layer. There are different models fo

We use the Internet every day, how is it implemented?The core of the Internet is a series of protocols that collectively "Internet Protocol" Internet Protocol suite.1: Overview1.1 Five-layer modelThe realization of the Internet, d

Some common Internet protocols are unknown. So to help some beginners sort out the concepts, let's take a look at the following common network protocols. I hope this article will be helpful to you. Internet Protocol 1, HTTP English name: hyper text transport protocol Chinese name: Hypertext Transfer Protocol Function D

Today, we will learn about Internet protocols in terms of addressing, segmentation, and gateway. The addressing method is also the address method we currently use in the IPv4 protocol. With the continuous development of the network, we will replace the current IPv4 with the IPv6 protocol, and the address protocols of the two are also different. In the subsequent

IP protocol Then, the TCP packet is embedded into the IP packet. IP packets must be set to the IP addresses of both parties. This is known. The sender is 192.168.1.100 (Local Machine), and the receiver is 172.194.72.105 (Google ). The Header Length of the IP data packet is 20 bytes, and the total length of the embedded TCP data packet is 5000 bytes. 　　9. 7 Ethernet protocol Finally, IP data packets are embedded into Ethernet data packets. For an Ethernet packet, you must set the MAC address of

all extend javax. servlet. GenericServlet. There are few classes, interfaces, and methods in the SIP Servlet specification, which allows people to easily and quickly master their basic knowledge. The operation of SIP is to "ping" other devices. In essence, it is to execute an INVITE message request to establish a session between devices. This is usually called Call Control-creating and cutting off media streams, such as phones. A session can be of almost any type and is not so much a SIP protoc

The previous article analyzed the overall concept of the Internet, from bottom to bottom, and the design philosophy of each layer of protocol.This is a question from the designer's perspective. Today I want to switch to the user's perspective to see how users interact with these protocols from top to bottom. ========================================================== ================================= Getting

The basic meaning of the Internet protocol has been explained in the previous article. So there is a lot worth learning about this IP protocol. Especially its addressing method and address. It is the basic theory of using networks. Now let's take a deeper look. Contact with other Protocols Shows the position of the IP protocol in the protocol system. ; The Internet