network boot protocol

connected to the target host or on a shared network, IP datagram is directly sent to the target host, otherwise, it is sent to the default vro and forwarded by the vro. Most user systems can be configured as routers. The IP layer has a route table in the memory. When receiving a datagram and sending it, you need to search for the table. When a datagram comes from a network interface, the IP address checks

Layer-7 network division In 1978, the International Organization for Standardization (ISO) proposed the "Open System Interconnection Reference Model", the famous OSI/RM model (Open System Interconnection/Reference Model ). It divides the communication protocol of the computer network architecture into seven layers:Layer 7: Application LayerLayer 6: Presentation

OverviewBoth TCP and UDP use the same network-layer IP, but unlike UDP, TCP is a connection-oriented, reliable byte-stream protocol. Therefore, both parties must establish a TCP connection before transmitting the data. TCP realizes the transmission of reliability through the mechanism of verification, serial number, acknowledgment response, retransmission mechanism, Connection management and window control.

BOOTP protocol(Bootstrap Protocol) is a TCP/IP-based Protocol that allows diskless sites to obtain IP addresses from a central server, assign a dynamic IP address to the diskless workstation in the LAN. You do not need to set a static IP address for each user. When using the BOOTP Protocol, it generally includes Bootst

I. Analysis of the Three-way handshake protocol First, let's look at one of the most common things in our life: During our online shopping, we often chat with customer service like this: We asked Customer Service about something, Customer Service answered, and then we broke the network... After a while, we will log on again and receive a response from the customer service. This interaction process co

message transfer process that ultimately completes the delivery of the message data to one or more mailboxes. Rcptto: Identifies the addresses of individual message recipients DATA Receiving SMTP will treat the behavior that follows as mail data to . to identify the end of the data. REST exit/Reset the current message transfer NOOP requires the receive SMTP to do only the OK answer. (For testing)

We use the Internet every day, have you ever wondered how it is implemented?Billions of computers worldwide, connected together, 22 communication. Beijing, a piece of network card sent out the signal, Shenzhen, another card incredibly received, the two actually do not know each other's physical location, you do not think this is a very magical thing?in order to make the various computers can be interconnected, ARPANET specified a set of computer commu

Layer-7 network protocol functions layer functions in the TCP/IP family OSI TCP/IP protocol family www.2cto.com Application Layer file transmission, email, file service, virtual terminal TFTP, HTTP, SNMP, FTP, SMTP, DNS, RIP, Telnet presentation layer data formatting, code conversion, data encryption no protocol Sessi

in order to provide services to the client, get the contents of the client, you can get the client object connected through the Accept method.3, you can communicate by getting the socket stream in the socket object and the specific client.4, if the communication is over, close the resource. Note: To close the client first, then close the server.Class tcpserver{public static void Main (string[] args) throws exception{ServerSocket ss = new ServerSocket (10002);//Socket Service set up for serverSo

Read Catalogue I. Operating System Fundamentals Two. Principles of network communication 2.1 The essence of the Internet is a series of network protocols 2.2 OSI layer Seven protocol 2.3 TCP/IP five-layer model explained 2.3.1 Physical Layer 2.3.2 Data Link Layer 2.3.3 Network Layer

Network programming, and obtain protocol data by protocol name-Linux general technology-Linux technology and application information. The following is a detailed description. # Include # Include Int main () { Struct protent * pro; Pro = getprotobyname ("tcp "); Printf ("protocol name: % s \ n"

I. Communication protocol When building a network, you must choose a network communication protocol, so that users can "communicate" with each other. Protocol (PROTOCOL) is a set of rules that

　　I. Introduction After the program runs, the time protocol (rfc868) is obtained through the network. If it fails to be obtained within five seconds, it will continue to retry after three seconds until it is obtained successfully. After obtaining the time, the program will try to adjust the computer system time. If the adjustment is successful, a message box will pop up: Your computer system time wa

This article mainly introduces the network protocol overview: the physical layer, the connection layer, the network layer, the transport layer, the application layer detailed, this article uses the postman and the Post office in the life to help to understand the complex network pr