you have a network that uses a logical bus topology. how do messages travel through the network?

Messages in a logical bus topology are broadcast on a single shared channel, traveling in both directions past every device, and each device reads only the frames addressed to it.

Quick Scoop

In a logical bus topology , think of one long shared “road” of communication.

• All devices are connected to the same logical communication line (the bus).

• When a device sends a message, it puts the data onto this shared line. The signal then travels in both directions along the bus.

• Every device on the bus “listens” to the passing frames, checks the destination address, and:
  • If the address matches, it accepts and processes the message.
  • If the address does not match, it ignores the message and lets it continue down the line.

Because all devices share the same medium:

• Only one device should transmit at a time; otherwise, collisions can occur.

• Access-control methods (like carrier-sense and collision handling) are used so devices wait for the bus to be free before sending.

In short, messages are broadcast over a single shared bus, pass by every node, and are accepted only by the intended recipient.

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