Cosa sono le reti a bus?

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Quali sono le 3 principali tipologie di rete?

Ad esempio, una LAN (local area network) connette i computer in uno spazio fisico definito, come un complesso di uffici, mentre una WAN (wide area network) è in grado di connettere i computer da diversi continenti. Internet è il più grande esempio di WAN, e connette miliardi di computer in tutto il mondo.
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In the bus network, each computer is connected to a single cable, known as the transmission channel or bus. This system, which has characterized Ethernet networks for years, allows all nodes to read the data that "travels" on the bus, even if they are not the recipients.

What types of network topologies exist? Ring, mesh, bus, star, and tree are the network topologies. The network topology refers to the graph, which is the geometric model of the logical or physical arrangement of nodes and connections. Branches and nodes are the essential elements.

What are the positive and negative aspects of the bus network topology? The bus network topology is advantageous because it is economical and easy to implement. However, a disadvantage of this configuration is the possibility of reduced performance under heavy traffic conditions. Additionally, this configuration has a maximum connection limit of ten computers.

So, which network topology is used in a LAN? Thanks to its simple implementation and ease of reconfiguration, the star topology is the most commonly used structure in modern LANs. Its traffic routing procedure is extremely straightforward.

What transmission channels are used by the network? The transmission media are:

  • Physical media: The signal propagates within them before passing from the transmitting system to the receiving system.
  • Radio carriers: Transmitting (TX) and receiving (RX) antennas transmit and capture electromagnetic waves to transmit information via radio.

What do you mean by the term WAN? A network that covers a wide area is a WAN. The modem uses the WAN port to send and receive data to and from the Internet.

What are the advantages of a star network? The advantages of a star network include:

  • A failure of one host does not prevent the network from functioning properly.
  • Since hosts are not directly connected to each other, communication between hosts and the hub is secure.
  • Network closure allows traffic and data volume control.

What is the difference between the Web and the Internet? On one hand, the Internet is the hardware of the network, the infrastructure that uses a standard protocol. The World Wide Web, on the other hand, is the software of the network, the vast network of applications and protocols that enable communication and "speaking" for everything.

What are the distinctive features of the ring network? Ring network topology:

  • A ring topology is a closed linear topology with two branches at all nodes.
  • One branch to the previous adjacent node and the other branch to the next adjacent node are connected to all nodes.

What tool is used to build a star local network? An hub is a concentrator in computer science and telecommunications, in computer network technology. A concentrator is a network device that acts as a data routing node in a data communication network organized with a logical bus topology.

Che cos'è la rete ad anello?
La rete ad anello è un sistema dove i nodi sono disposti a forma di cerchio creando appunto un anello, senza quindi l'esistenza di nodi terminali. A connettere tra loro i computer è un cavo circolare.
Cosa sono le reti a stella?
Una rete a stella è una rete LAN caratterizzata da una topologia che prevede la presenza di un nodo centrale, al quale sono direttamente connessi tutti gli altri nodi (PC, telefoni, server, switch, modem e router).
Cos'è una rete ad albero?
La topologia ad albero è una variante più complessa di una struttura lineare, caratterizzata dal fatto che da ciascun nodo possono dipartirsi più catene lineari distinte e non intersecantesi, realizzando così una struttura multilivello.

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