If you are not a child of the School of network engineering, you have a blank understanding of network. I have heard of TCP/IP before. Seriously, it seems a headache, but the protocol is dead. I am familiar with it after reading it several times.
Read the book and learn about the TCP/IP concepts. Otherwise, the subsequent work will not proceed.
The TCP/IP protocol is divided into four layers.
Applicatio
PPP Protocol composition and brief description of the basic process of Protocol negotiation 1. PPP (Point-to-Point Protocol) is a link layer Protocol designed for the transmission of data packets between the same unit and other simple links. The design is mainly used to establish a point-to-point connection to send dat
The ports and protocols used by the Samba service:1) Port 137 (UDP)-NetBIOS name service; NMBD2) port 138 (UDP)-NetBIOS Datagram Service 3) port 139 (TCP)-File and print sharing, SMBD (SMB (Server Message Block) protocol, mainly used on LAN, file sharing protocol) 4) port 3 (TCP)-for LDAP (Active Directory Mode) 5) port 445 (TCP)-NetBIOS service uses this port in WinDOS 2000 and later versions (Common Inter
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.
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
TPC/IP Protocol is a Transport layer protocol, which mainly solves how data is transmitted in the network, and HTTP is the application layer protocol, which mainly solves how to wrap the data. regarding the relationship between TCP/IP and HTTP protocol, the network has a relatively easy to understand: "When we transmi
The protocol @protocol in Objective-c, similar to the interface interface in Java, lists the methods that this class does not need to implement, and is implemented by classes that implement this Protocol.1 Declaration Agreement ProtocolFormat:@protocol protocol Name.... Meth
One, the distinction between communication and communication protocol:1, the traditional meaning of "communication" mainly refers to telephone, telegraph, telex. The "message" of the communication means the messages, and the media messages are passed from one end to the other through the communication network. The content of media message is mainly voice, text, picture and video image. The composition of its network is mainly composed of electronic eq
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核心提示:-->With the development of the IP network to the multi-service network, especially the development of VoIP in recent years, it is inevitable to transmit signaling messages in the IP network. But in the IP network cannot provide high-quality transmission services like mtp3 and ATM, so the ITU-T proposed an improved version of sscop-sscopmce in Multi-link and non-connection environment ), it is used to transmit signaling messages in an IP-based network. However, compared with sscop, ssc
Introduction to HTTPS protocol instances, https protocol instances
HTTPS is an SSL-based HTTP protocol, which is simply a secure version of HTTP. Relying on the SSL protocol, the HTTPS protocol can ensure that the entire communication process is encrypted, the key is genera
TCP the difference between protocol and UDP protocol first, let's get this straight. TCP agreements and UCP Agreement and TCP/IP agreement, a lot of people are confused, has always been said TCP/IP Agreement and UDP the difference between the protocols, I think it is not clear from the nature of network communication! the TCP/IP Protocol is a
Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!After a cursory look at IP relays and IP addresses, we turn to the specifics and design philosophy of IP protocols.comparison of IPv4 and IPv6 headWe have already introduced in the IP relay, an IP packet is divided into the header (header) and the data (payload/data) two parts. The head is the additional information necessary to implement IP communication, and the data is the information to be
TCP (transmission Control Protocol, transmission Protocol) is a connection-oriented protocol,In other words, a reliable connection must be established with each other before sending or receiving data.A TCP connection has to be three "conversations" to build, and the process is very complex and simply describes the simple process of three conversations:
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overturn.
My ideal is to be a knowledgeable person with a wealth of professional knowledge, enough to deal with problems at work. In addition to work, you can read books to improve your temperament.
1. what is TCP/IP?
If you want to know a person, you can chat from the group where he belongs. Our HTTP protocol is a member of the TCP/IP protocol family. we understand the status of HTTP in the entire netwo
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.
First, protocol1. Basic use1> can be used to declare many methods, but cannot be used to declare member variables2> as long as a class complies with this protocol, it is equivalent to having all the method declarations in this agreement3> as long as the parent adheres to a protocol, the subclass also adheres to the2. FormatPreparation of the 1> protocol@
in C # writing code, many times you will encounter the HTTP protocol or TCP protocol, here is a simple understanding. The TCP protocol corresponds to the transport layer, while the HTTP protocol corresponds to the application layer, in essence, there is no comparability between the two. The HTTP
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