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…
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)- A3% (1)
- B79% (27)
- C12% (4)
- D6% (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.
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