Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which component terminates a high speed controller area network?

  • A.A capacitor at each end, which absorbs the reflections that would otherwise corrupt the data upon the bus
  • B.Nothing
  • C.A terminating resistor within a module at each extremity of the bus, giving about sixty ohms measured across it
  • D.A resistor of about 120 ohms at each end

Answer: D

Two terminators prevent signal reflections and give the characteristic sixty ohm reading. The last option describes exactly where they sit and what they measure, which makes it a correct and fuller statement. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. Tracing the requirement back to the physical constraint that produces it makes the answer follow. A single measurement chosen to respond to the one asymmetry beats several that respond to shared behaviour.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.