Discussion
A __________ link on an avionics Ethernet network is a logical path from one source to defined receivers.
Answer: C
Correct answer: virtual
A virtual link is a configured unidirectional path from one transmitting end system to a defined set of receivers, with a guaranteed maximum bandwidth. It lives in the switches' configuration tables rather than in any cable.
The idea reproduces ARINC 429's one-to-many broadcast on a switched network, while adding the rate limit that makes the timing analysable. Several virtual links share the same physical wiring, which is exactly what removes the wiring weight the older buses carried.
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