hdlc protocol

TCP vs. UDP differencesTCP---Transmission Control Protocol, providing a connection-oriented, reliable byte-stream service. Before the customer and the server Exchange data with each other, a TCP connection must be established between the two parties before the data can be transferred. TCP provides time-out re-send, discard duplicate data, test data, flow control and other functions to ensure that data can be transmitted from one end to the other.UDP--

Preface: Because OBJECT-C does not support multiple inheritance, it is often replaced with protocol (protocol). The Protocol (protocol) can only define a common set of interfaces, but cannot provide a specific implementation method. That is, it only tells you what to do, but specifically how to do it, it does not care.

The routing information protocol (RIP) is one of the earliest and most basic protocols in the routing protocol. Although its current use is gradually unable to meet our network construction needs, we still need to fully master this protocol as a learning basis. Like all protocols, the RIP Protocol is used to distribute

Preface: Because OBJECT-C does not support multiple inheritance, it is often replaced with protocol (protocol). The Protocol (protocol) can only define a common set of interfaces, but cannot provide a specific implementation method. That is, it only tells you what to do, but specifically how to do it, it does not care.

Objective-c Protocol (Protocol), objectivecprotocol The Protocol is a list of methods shared by multiple classes. methods listed in the Protocol are not implemented in this class, but are implemented by other classes. To comply with a protocol, a class must implement all met

Author: vamei Source: http://www.cnblogs.com/vamei welcome reprint, please also keep this statement. Thank you! After a rough understanding of IP address relays and IP addresses, let's look at the specific details and design philosophy of the IP protocol. Comparison between IPv4 and IPv6 Headers We have already introduced in IP address relay that an IP packet is dividedHeader(Header) andData(Payload/data. The header is the additional infor

Reprint Original Address: http://aajs800.blog.51cto.com/519255/109555What is Https:https (Secure hypertext Transfer Protocol) Secure Hypertext Transfer Protocol It is a secure communication channel that is based on HTTP development and is used to exchange information between client computers and servers. It uses Secure Sockets Layer (SSL) for information exchange, which simply means that it is a secure vers

NetBIOS protocol (NetWork Basic Input/Output System). This protocol is developed by IBM and is mainly used for the small LAN of dozens of computers. The NetBIOS protocol is an Application Programming Interface API that can be used by a program on the LAN. It provides a unified command set for the program to request low-level services, it serves to provide network

TCP/IP is synonymous with a set of protocols, and it also includes many protocols that make up the TCP/IP protocol cluster.TCP/IP protocol cluster is divided into four layers, IP is located in the second layer of the Protocol cluster (corresponding to the third layer of OSI), TCP is located in the third layer of the Protocol