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220-801 · Question #490

Which of the following network topologies is the MOST likely to affect other downstream devices if an issue occurs?

The correct answer is B. Bus. In a bus topology, all devices share a single communication line (the 'bus'). A failure anywhere on the main cable disrupts communication for all devices connected to it downstream from the break, because data travels linearly along the single backbone. In a star topology, a…

Networking

Question

Which of the following network topologies is the MOST likely to affect other downstream devices if an issue occurs?

Options

  • AMesh
  • BBus
  • CStar
  • DRing

How the community answered

(34 responses)
  • A
    3% (1)
  • B
    79% (27)
  • C
    12% (4)
  • D
    6% (2)

Explanation

In a bus topology, all devices share a single communication line (the 'bus'). A failure anywhere on the main cable disrupts communication for all devices connected to it downstream from the break, because data travels linearly along the single backbone. In a star topology, a device failure only affects that single device (not others). In a ring topology, a break can affect the ring but modern rings often have redundancy. In a mesh topology, multiple redundant paths exist, so a single failure rarely disrupts other devices. Bus is the most vulnerable to cascading failures.

Topics

#network topology#bus topology#topology comparison#fault propagation

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