arpanet

Apache Apache is a very common server environment. After Apache is installed, the configuration file needs to be modified before it can be used. HTTPS.CONF is the Apache configuration file with the address ininstallation directory for Apache \conf\httpd.confThe default installation directory:C:\Program Files (x86) \apache software foundation\apache2.2\If installed in the C drive (the default installation), it may appear that the permissions are not enough to save, you need to copy it to another

can reduce the cost of the telephone line (because it is too expensive to communicate using a leased line). But as demonstrated in the video, the data sent and the data sent by others need to be queued in the network. The route created by the sender and receiver is not a 2.1-wire (this is too expensive), but rather a network of nodes is set up between them to forward.The disadvantage is that if you send a large file to be transmitted in a long time (because of the continuous, so the same time c

client host down, network failure, Or there is no data transfer between the two for a long time, the network firewall may disconnect the connection to free up network resources. So when there is no data transmission in a socket connection, the heartbeat message needs to be sent to maintain the connection ~ ~ The specific heartbeat message format is defined by the developer. the OSI Reference Model developed by ISO is too large and complex to incur many criticisms. In contrast, the TCP/IP protoc

use, can think of the socket and HTTP similar (but one is a written Internet protocol, one is always used as a programming concept), the Transport layer protocol is another Direct use, because according to the design, the network to the user interface should be in the application layer.The origin of the socket nameLike many other things on the internet, the socket is named after the famous ARPANET (Advanced Study Projects Agency), where the socket in

conceived a plan for the Advanced Research Projects administration network (ARPANET. At this point, kleinrock is at the network measurement Center of the University of California, Los Angeles, and is selected as the first node of ARPANET. It was here that BBN successfully installed the first group switch in 1969, called the interface message processors (IMP ). The Stanford Research Center was elected as th

dial-up connection. At the end of 1966, Roberts came to DARPA with the results of his experiment, where he conceived the plan of the Advanced Research Project Management Network (Advanced study Projects Administration network,arpanet). At this point, Kleinrock is at the UCLA Network Measurement Center (Network Measurement Centre), which is chosen as the first node for ARPANET. It was here that 1969 BBN su

, we can see: through the network of communication forms, if a node out of the question, the information flow can go other paths.Mesh Communication NetworkNow that the idea is there, it will be realized.But to make it easier, the pioneers of the network began by designing networks for the military. It was not until the the early 1960s that a preliminary document describing the Internet was compiled.In the late 1960s, Arpanet (ARPA), the Senior Researc

For the following information, refer to "Computer Network (5th )".I. Development of Computer Networks 1. "Three networks": telecom network, cable TV network, and computer network. Among them, the fastest growing core is the computer network 2. The network is composed of several nodes and links connecting these nodes. 3. The Internet is the "network", and the Internet is the largest Internet (Internet) today) 4. Host host, not just a computer. Note the differences between the node and the node,

satisfactory services to users. As a very important technology, network management has a great impact on the development of networks and has become one of the most important problems in modern information networks. In fact, network management is not a new concept. In a broad sense, any system needs to be managed, but the importance of management in the entire system is light and important based on the size and complexity of the system. The Network is also a system. The telecom network, which tr

same time, and secondly, it is full-duplex. In terms of reliability, timeout retransmission and RST validation mechanisms are used. In terms of traffic control, the sliding window protocol is used, which stipulates that unconfirmed groups in the window need to be re-transmitted. In terms of congestion control, the slow start algorithm is used. What is TCP/IP? TCP/IP (Transmission Control Protocol/Internet Protocol) is an industrial standard Protocol set designed for WANs. It was developed by re

development speed, debugging only need a browser can be debugging logic clear.　Type 2: First-generation Game server 1978In 1978, University of Essex, a student of Britain's famous financial school, Roy Trubshaw, wrote the world's first mud program MUD1, which was accessed in University of Essex in 1980. Arpanet later joined a number of external players, including even foreign players. The source code of the "MUD1" program has been widely adapted afte

three-way strategy or card and parkour game is more than enough, this kind of game because the logic is simple, the interaction between players is not strong, using HTTP to develop, the development speed, debugging only need a browser can be debugging logic clear.type 2 : First generation Game server 1978In 1978, University of Essex, a student of Britain's famous financial school, Roy Trubshaw, wrote the world's first mud program MUD1, which was accessed in University of Essex in 1980.

Three stages of Internet development0 The first phase is the process of developing from a single network ARPANET to the Internet.0 The second stage is the completion of the three-level structure of the Internet , including the backbone network, regional network, Campus Network (Enterprise Network).0 The third stage is the gradual formation of multi-layered ISP structure of the Internet . (P6 figure 1-4 ISP-based multilayer Internet concept) The compo

Question 1: What is network?A network consists of several nodes and links connecting these nodes. We need to install a lot of software on the computer to complete information exchange between computers. Networks exist to facilitate information exchange.Question 2: Network Development.The first phase of the network is the point-to-point mode of ARPAnet, which is the core of the entire network. The disadvantage is that when the only core has a problem,

1.1 Computer networks provide users with two of the most important features: (1) Connectivity: Computer networks enable users to exchange information between the Internet; (2) Sharing: Sharing of resources, namely: information sharing, software sharing, hardware sharing. 1.2 The network consists of several nodes (computers, hubs, switches, routers, etc.) and links that connect these nodes The three stages of Internet development: (1) from a single network ar