How Does a Switch Function in a Computer Network?

Which of the following best describes how a switch functions?

a. It connects multiple cable segments or devices and forwards frames to the appropriate segment.

b. It connects multiple segments of different architectures. It translates frames and broadcasts them to all of its ports.

c. It connects multiple cable segments or devices and broadcasts frames to all of its ports.

d. It connects multiple segments of different architectures. It translates frames and forwards them to the appropriate segment.

The switch connects several cable segments or devices together and forwards frames to the desired segment or device. Thus, the correct answer pertains to (a) i.e. 'It connects multiple cable segments/devices and forwards data frames to the appropriate device'.

Explanation:

A switch is a data link layer network device that plays a crucial role in computer networks. Its main function is to connect multiple devices on the network together, facilitating data transmission between them. Unlike hubs, switches are more intelligent and capable of forwarding data selectively.

When a switch receives data frames from a sending device, it examines the destination MAC address in each frame to determine the correct port to forward the frame to. This process ensures that data is delivered only to the intended recipient rather than being broadcasted to all ports, making network communication more efficient and secure.

Furthermore, switches perform error checking on data frames to ensure data integrity. If any errors are detected in a frame, the switch will not forward it to the destination device and will instead discard the faulty frame, preventing corrupt data from being transmitted through the network.

In conclusion, switches are essential components in modern computer networks, enabling fast and reliable communication between devices while maintaining data integrity and security.

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