The server and the client communicate as follows in this server-based network: The client first sends a request to the server. The server evaluates the request and then transmits the response. In this model, the client always connects to the server, never the other way around.
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Protocol: A protocol is a set of rules and standards that govern how data is transmitted over a network. Examples of protocols include TCP/IP, HTTP, and FTP.
Firewalls: Devices or software that monitor and control incoming and outgoing network traffic based on security rules.
Response to User: The resolver stores the IP address in its cache and sends it to the user's device.
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Computer networks are especially beneficial for larger and globally spread-out organizations, as they can use a single common network to connect with their employees.
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Computer network play a important role in modern life. Here are some key benefits of computer networks:
Network addresses In addition, it is necessary to ensure that the transmitter and receiver can be correctly identified. Network addresses are used for this purpose. In computer networks, each computer typically has an IP address, similar to a telephone number, that uniquely identifies the computer.
Flexibility. Today's computer networks enable people to use flexible communication and resource-sharing methods based on their needs and preferences. For example, some people might use email or instant messaging to communicate, while others might prefer using an app such as WhatsApp.
FTP: Protocolo por transferência de arquivos que permite o envio e recebimento do arquivos entre dispositivos.
Computer networks first developed in 1950 for military and defense purpose. At that time they are mainly used to send data through telephone lines and had limited use in business or science.
Before the advent of modern networks, communication between different computers and devices was very 男同网 complicated. Computers were connected using a LAN cable.