Computer networks are an integral part of both our private and business lives, so the appropriate network infrastructure plays a key role in ensuring smooth communication and data flow. The elements that enable efficient and effective data exchange between various devices include a network switch.
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A network switch, also known as a switch, is an essential device for building effective and efficient computer networks. Thanks to its intelligence and advanced functions, the switch enables smooth data transfer between devices within the network, minimizing collisions and ensuring transmission efficiency.
What is a network switch?
A network switch is a device that plays a key role in connecting segments of a computer network at the second layer of the ISO/OSI model, called data links. Its main task is to transmit data packets between various network elements, using the appropriate port to which the packet recipient is connected.
This allows the switch to act as an intelligent hub, sending data only to the target device. The switch is characterized by a rectangular housing with many ports to which various network devices are connected, such as printers, servers, computers or network-controlled machines.
What characterizes a network switch?
Switches available on the market offer a different number of ports. Depending on your network needs, you can choose models with several to several dozen ports. Another important parameter is throughput, which determines the maximum amount of data that the switch can process per unit of time. Bandwidth is crucial to network performance, especially under heavy loads.
What is the difference between a router and a network switch?
A router and a switch are two different devices that perform different functions in the network. The main task of a router is to connect various networks, e.g. connecting a local home network to the Internet. The router makes decisions about routing traffic between different networks and also ensures network security through IP address translation.
A switch operates at a lower level than a router and focuses on transferring data between devices within one local area network (LAN). It does not make decisions regarding traffic between networks, but only ensures that devices within the same network communicate effectively.
How does a network switch work?
The switch works by using the MAC (Media Access Control) addresses of devices connected to its ports. When data is sent from one device, the switch checks the recipient's MAC address and redirects the data only to that one device, allowing for efficient and collision-free data transfer across the network.