novell network in computer networks

header line in the HTTP request message A cookie file is kept in the client system and managed by the user's browser A back-end database located on a Web site Chestnuts:# # Web Cache Web caches (Web cache), also known as proxy servers, are network entities that can represent the initial WEB server to satisfy HTTP requests. The WEB cache has its own disk storage and holds a copy of the most recently requested object

Data Link Layer 1 in computer networks as mentioned earlier: when data is transferred between two adjacent nodes, the data link layer assembles the IP data packets handed over by the network layer into frames, and transmits the data in frames transparently on the links between two adjacent nodes. Three basic problems of the data link layer protocol are encapsulat

a network address for all 0;Loopback Address: 127. x.x.x. Generally used to check if the protocol is installed correctly.(3) Division of Subnets and construction of networks　　Subnet and subnet maskno-class inter-domain Routing (CIDR):128.14.35.7/20. Route aggregation(4) IP datagram format3. Inter-network Control Message Protocol ICMPICMP messages are encapsulat

I. OSIThe International Standards Organization (ISO) issued the Open Systems Interconnect Reference Model in 1984 OSIIi. implications of the OSI layer seven modelApplication layer: An excuse for Web services to end usersPresentation layer: Representation of data, security, compressionSession Layer: Create, manage, and terminate sessions for example: breakpoint continuationTransport Layer: Defines the protocol port number of the transmitted data, as well as the flow control and error checking to

lasts for 2msl. If there is no Resend Request from B in this period, it enters the closed status to cancel TCB. After receiving the confirmation response, B enters the closed status and revokes TCB. Why does a need to enter the time-Wait Status and wait for 2msl time before entering the closed status?To ensure that B can receive a confirmation response.If a directly enters the closed status after sending a confirmation response, if the response is lost, B will re-Send the connection release re

In the data communication system or computer network system, the bandwidth or capacity of the transmission media will often be greater than the demand for the transmission of a single signal, in order to effectively use the communication line, hope that a channel simultaneously transmission multi-channel signals, this is called Multiplexing Technology (multiplexing). Multiplexing technology can combine mult

. Processes of different systems communicate with each other by exchanging packets across computer networks. It can be divided into client processes and server processes. In a given communication session between processes, the process initiating communication is a client process, and the process waiting for connection is a server process. A process sends and receives packets over the

Before learning about networks, review the basics of computer networks. Lu Xun said that there is a huge copy of the article in the world. If you have any questions, you can copy the book based on your basic knowledge. A layered model 1. Why Layer In order to simplify the network design complexity, communication

POS machine debugging needs to set the port number, look down "computer Networks Road" This book, the following is my reading after the understanding, do not know the classmate can see help understand.The difference between reuse and separationTransport layer reuse means that the transport layer above the data are sent to the transport layer, transport layer sent out, divided by means that the other host se

://bbs.gfan.com/android-155506-1-1.html I want to help you. ==================================================================================== Update: A netizen said that can also bridge the way to establish a share, also summed up, hoping to help users. 1. all temporary networks have been established before removing the computer: Go to network and Sharing cent

Broadband Users should improve their awareness of network security and take technical measures such as strengthening the system, limiting open ports, and disabling sharing to prevent hackers from intruding into computers, reduce or avoid economic losses arising from account theft. 1. You must restart your computer before accessing the internet or getting off the server in public places. I believe that the

. 2. Build a new network-centric service and combine it with the current end-to-end network. Transfer software with security requirements such as mail, communications, payments, etc. to new network-centric services, while other software without similar requirements remains in an end-to-end network. 3. Non-technical m

OSI Reference Model Layered function Application Layer An excuse for Web services and end users Presentation Layer Representation of data, security, compression Session Layer Establish, manage, abort a session Transport Layer Defines the protocol port number of the transmitted data, as well as traffic control and error checking Network