What Is The Most Common Central Device Used Today To Connect Computers To A Network?

What Is the Most Common Central Device Used Today to Connect Computers to A Network?

• Switch
• VPN router
• SOHO router
• Hub

The switch is the most common central device used today to connect computers to a network.

Answer:

A switch allows multiple computer connections at the same time. Switches also permit that host or computer to send and receive messages at the same time, it supports full-duplex. While hubs are replaced by switches it is called legacy devices. Hub connects one device to communicate only. Collisions occur when two devices attempt to communicate at the same time. So, this is the greatest benefit of switches it can handle more conversations at the same time.

Hub:

It is a networking device that permits to connect one to multiple PCs through a single network. Like USB, firework connections.

• It is layer one device per OSI model.
• It transmits data in form of electrical signals or bits.
• Type of transmissions in the hub is unicast, multicast, and broadcast. It always performs frame flooding.
• The transmission mode of the concentrator is half-duplex.
• One Broadcast domain is used in a hub.
• The device used in the hub is a Passive device without a software type.
• The speed is 10 Mbps.
• When two devices are connected in hub collisions mostly occur.

Switches:

It is a computer networking device it connects network segments. It is a control unit that is in or off the circuit or controls the flow of electricity. It connects more communication systems at the same time.

• It operates at a two-layer OSI model.
• Its function is to connect multiple devices.
• Its data transmission mode is the frame (L2 switch) and frame &packet (L3 switch).
• Switch transmission type is unicast and multicast.
• The device type in the switch is an active device with software and a networking device.
• The transmission mode is either half or full-duplex.
• Switches have one broadcast domain.

Performance difference:

The performance of switches is high than the hub. If the home has more networks people get benefits from switches over hubs that share heavy music files, multiplayer games, etc. virtual circuit model is used in switches, and a hubs broadcast model is used. Switches perform better than a hub because it creates less traffic in message transfer.