apn protocol

0 hopopt IPv6 Jump option 1 ICMP Internet control messages 2 IGMP Internet Group administration 3 GGP Gateway to Gateway 4 IP (encapsulated) in IP IP 5 ST Stream 6 TCP Transmission Control 7 CBT CBT 8 EGP External Gateway Protocol 9 IGP any dedicated internal gateway (Cisco uses it for IGRP) Bbn-rcc-mon BBN RCC Monitoring One NVP-II Network Voice protocol Pups Pups ARGUS ARGUS Emcon Emcon Xn

"OSI layer Seven Protocol" Application Layer An application that communicates with other computers, which is the communication service of the corresponding application. For example, a word processor without a communication function would not be able to execute the code of communication, and the programmer working on the word processing did not care about the 7th layer of the OSI. However, if you add an option to transfer files, the programmer of the

devices constantly detect the network bus, including the time between pauses. When the first domain (address field) is received, each device is decoded to determine if it is destined for itself. After the last transmission character, a pause of at least 3.5 character time is calibrated to the end of the message. A new message can begin after this pause. The entire message frame must be lost as a continuous flow. If there is a pause time of more than 1.5 characters before the frame completes, th

Today, let's talk about the standard Internet communication protocol-TCP/IP protocol.This part of content may not be very understandable and abstract. It is a tough nut for beginners, but since it is a beginner, don't let everyone have any mental burden. No one is a genius, right? I will try my best to give you more examples for your understanding!1. Basic ContentTCP/IPTransmission Control Protocol/Internet

Principle Analysis of HTTP protocol and HTTP protocol Baidu Encyclopedia: HyperText Transfer Protocol (HTTP) is the most widely used network Protocol on the Internet. All WWW files must comply with this standard. HTTP was designed to provide a method for publishing and receiving HTML pages. In 1960, American Ted Nels

Up "mobile device Management (MDM) and OMA (OTA) DM Protocol Wizard (ii)--WAP Protocol (1)"8.WAP Server and WAP gatewayWAP server can directly to the mobile terminal to provide WAP application services, many people think that only WAP server to provide WAP content, this is incorrect, WAP content can be provided by any ordinary Web server, but this server must contain a WAP gateway, So you can skip the Third

In the previous article, "Master Programmer's Training: TCP, message subcontracting and protocol design" discusses some of the topic of protocol design, here to add to the HTTP protocol and binary protocol comparison.The HTTP protocol is a text

Swift protocol and swift Protocol The protocol in Swift is also called in object-c, but in other languages it may be called Interface (such as java) or pure virtual function. In fact, it all means. The Protocol is mainly used to define uniform methods and attribute names, but does not implement any functions. Only the

Protocol and proxy, protocol proxy ====================================== Protocols and Proxies ====================================== [Agreement] @ Protocol [Role of the Protocol]: Specifies the interface method to be implemented. An agreement that must be followed by the entrusting party and the agent. Delegate by (

TelnetWhat is Telnet protocol?Telnet Server Software is our most commonly used Telnet Server software and is a typical client/server model service that uses the Telnet protocol to work. So, what is the Telnet protocol? What features does it have?Telnet is a protocol located at layer 7th of the OSI model---application l

I. Overview A protocol is a delegate (delegate)/proxy, which is an object that provides an opportunity to respond to changes in another object or to affect the behavior of another object. A protocol can only be used for one purpose, that is, to declare a heap of methods for an inherited class. The base class adheres to the Protocol, and its deriv

Put the three Protocols together for learning because these three protocols are on the same layer. ARP is used to find the MAC address of the Ethernet NIC of the target host, and the IP address carries the message to be sent. The data link layer can get the data transmission information from ARP, and get the data information to be transmitted from the IP address.1. IP protocol The IP protocol is the core of

[Swift] Day13: Protocol, swiftday13 ProtocolProtocol attribute Protocol We can define attributes in the Protocol. The following code is incorrect, because the Protocol defines the read-only attribute, but tries to modify its value: protocol FullyNamed { var fullName: Stri

What is the industrial Internet of things?In short, it is the specific application of the Internet of things in industrial control.What is SSL/TLS?SSL (secure Sockets layer Secure socket), and its successor Transport Layer Security (Transport layer Security,tls) is a security protocol that provides security and data integrity for network traffic. TLS encrypts the network connection with SSL at the transport layer. Most of the Internet login is the use