Vehicle Networking Protocols Questions and Answers

Answer: C

Broadcasting by content lets one sensor value serve the brakes, the engine, the transmission and the cluster. The last option gives exactly that example, which makes it a correct and more concrete statement. Naming what changes and what stays the same is the reliable route through questions of this shape. Checking which component actually carries the load settles most questions of this kind at once. A limit that survives making every external component ideal is an intrinsic one, and worth knowing for that reason.

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.

Answer: A

Losing one terminator doubles the measured resistance from sixty to a hundred and twenty. The last option states that relationship generally, which makes it a correct and equivalent answer. Communication often continues intermittently. A symptom that appears under one condition and not another is what narrows the diagnosis quickly. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.

Answer: B

Shorting the lines destroys the differential signal entirely and nothing communicates. The last option describes both the measurement and the symptom, which makes it a correct and fuller version of the same answer. The order in which the effects act is what decides the outcome, so it is worth establishing first. Reading the definition literally, rather than recalling a summary, avoids the usual confusion. Reading the definition literally, rather than recalling a formula, is the reliable route through questions of this shape.

Answer: C

Fault tolerant transceivers can run on one line with reduced noise immunity. The last option describes exactly that capability, which makes it a correct and more specific statement. A missing terminator also permits communication. Checking which component actually carries the load settles most questions of this kind at once. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Working one numerical case through both cases side by side fixes the distinction better than any rule of thumb.

Answer: D

A local interconnect network is a single wire master and slave bus running at up to twenty kilobits per second. The last option describes exactly that, which makes it a correct and more descriptive version of the same answer. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Naming what changes and what stays the same is the reliable route through questions of this shape. Framing the question as which quantity the change acts upon makes the answer follow without calculation.

Answer: A

The master sends a header and the addressed slave supplies the data, so no arbitration is needed. The last option describes exactly that scheme, which makes it a correct and fuller statement. The shared behaviour explains why these belong together and the differences explain why both exist. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. The shared properties explain why these belong to one family, and the differences explain why more than one exists.

Answer: B

One wire, simple transceivers and no arbitration make it very cheap for undemanding devices. The last option states exactly those reasons, which makes it a correct and more explanatory version of the same answer. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision. A symptom that appears under one condition and not another is what narrows the diagnosis quickly. Naming what changes and what stays the same is the reliable route through questions of this shape.

Answer: C

Media oriented systems transport is an optical ring carrying synchronous streams. The last option describes exactly that, which makes it a correct and more descriptive version of the same answer. Reading the definition literally, rather than recalling a summary, avoids the usual confusion. The order in which the effects act is what decides the outcome, so it is worth establishing first. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb.

Answer: D

Plastic optical fibre gives bandwidth and complete freedom from electrical interference. The last option describes exactly that arrangement, which makes it a correct and fuller statement. Copper versions of the standard also exist. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Checking which component actually carries the load settles most questions of this kind at once.