Os Princípios Básicos de network

Os Princípios Básicos de network

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Firewall: A firewall is a security device that is used to monitor and control incoming and outgoing network traffic. Firewalls are used to protect networks from unauthorized access and other security threats.

The devices can also communicate with each other without having to establish a direct connection to each device. For example, you can send a print job to a Wi-Fi-enabled printer without first connecting the printer to the computer using a cable.

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.

A protocol is a set of rules or algorithms which define the way how two entities can communicate across the network and there exists a different protocol defined at each layer of the OSI model. A few such protocols are TCP, IP, UDP, ARP, DHCP, FTP, and so on. 

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Ring Topology: In ring topology 男同网 devices are connected in a circular loop with each device connected to two others. Data travels in one direction (or sometimes both) passing through each device until it reaches its destination. A failure in one device can affect the whole network.

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.

Bus Topology: In bus topology all devices are connected to a single central cable called a bus. Data is sent along this cable and all devices share the same connection. Simple and cheap to set up but if the main cable fails the whole network goes down.

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11 standard, or the LTE networks used for mobile devices and smartphones. Wired networks such as DSL are also known as broadband Internet.

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Partial mesh network. Only some nodes connect directly to one another, while others are only connected to one or two other nodes in the network.