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Which network characteristic makes a diagnostic tool able to read many modules?

  • A.Nothing
  • B.The gateway module, which receives diagnostic requests at the socket and forwards them to the appropriate network
  • C.A shared gateway routing requests to each network
  • D.A direct connection to every module, which is provided by dedicated pins within the diagnostic socket of the vehicle

Answer: C

The socket connects to the gateway, which routes each request onward by address. The last option describes exactly that routing, which makes it a correct and more detailed version of the same answer. Most errors here come from carrying across a result from a neighbouring case where it does not hold. The shared behaviour explains why these belong together and the differences explain why both exist. Reading the definition literally, rather than recalling a summary, avoids the usual confusion.

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