QUIZ
Networking
3 years ago by
20 questions
Q.

High speed CAN uses only CAN high signal wires.

answer choices

True

False

Q.

Low speed CAN has a CAN high signal wire.

answer choices

True

False

Q.

If a single module is not communicating on a CAN network, what is the best first step?

answer choices

Verify power and ground for that module

Install the breakout box to Gateway and view the module's waveform with the DSO

Inspect for marten bites

Verify an LED test light flickers when back-probing another CAN module

Q.

In a CAN or LIN network that has no fault, the signal is the same throughout the network, no matter where it is viewed.

answer choices

True

False

Q.

Where do modules get their power and ground for communication?

answer choices

From Gateway (J533)

Power from the Gateway (J533), and ground through its housing

Ground through the Gateway (J533), and power from their individual wiring harnesses

Power and ground through their individual wiring harnesses

Q.

What is true about LIN (Local Interconnect Network)?

answer choices

It allows a CAN (LIN master) module to control and receive information from modules that are not on a CAN network

It allows a LIN (slave) module to wake up a CAN module

It is one of the fastest networks that exist

It is not used anymore

Q.

CAN and LIN communication is best described as:

answer choices

Electrical current used as a language between modules

Voltage as a language between modules

It is a form of PFM

Electrical resistance as a language

Q.

How do high speed CAN signals differ from low speed CAN signals?

answer choices

Where am I?

High speed CAN's CAN low signal always gets pulled high

Low speed CAN's CAN high signal always gets pulled low

The dominant and recessive voltage amplitudes are different

Q.

Why are CAN high and low signal wires twisted together?

answer choices

Martens are unable to bite a single wire

It's easier to identify the matched set during repairs

Any electrical interference will affect them equally keeping differential voltages valid

So each wire can detect the messages sent the opposite direction

Q.

If low speed CAN has an open circuit in one of its wires, what will happen?

answer choices

The control modules will still function normally, but have faults for single wire mode

The control modules will only partially function, but have faults for single wire mode

No faults will set because it's a fault-tolerant system

No communication is possible because it's not a fault-tolerant system

Q.

When should bandwidth limitation (BWL) be off?

answer choices

for low frequency signals

for high frequency signals

the start of diagnosis

my day off

Q.

When should a multimeter be used to evaluate the quality of network communication signals?

answer choices

When it's a misdiagnosis or comeback

When power and ground have been verified at all modules

When you've given up

Never

Q.

What type of signal is displayed?

answer choices

Analog

Digital

Digilog

Anital

Q.

What type of signal is displayed?

answer choices

Analog

Digital

PFM

Wait, what?

Q.

Local Interconnect Network (LIN) uses a single wire for communication.

answer choices

False

True

Q.

If a CAN module does not have power at it's individual wiring harness connector, what will the network signal look like at that same connector?

answer choices

It will be 0V, no matter which network

It will be approximately recessive voltage for it's type of network

It will be a normal waveform for the type of network protocol used

It will default to source voltage

Q.

If there is an open circuit between a CAN master module and one of it's LIN components, what will the network signal look like at that LIN component?

answer choices

It will be 0V

It will be continuous source voltage

It will be continuous recessive voltage

It will appear like a normal LIN network signal

Q.

What is the most likely cause of the displayed waveforms?

answer choices

Bandwidth Limitation is turned on

Bandwidth Limitation is turned off

There is a short between the low-speed and high-speed CAN

There is a short between the high-speed and low-speed CAN

Q.

In a MOST network, what is meant by "attenuation"?

answer choices

The attention level of each module

The reduction in light intensity

The interference of electromagnetism

The interference of short-wave radio signals

Q.

If you cannot communicate with a single module on a network, what is the best next step?

answer choices

Connect the DSO at the component and evaluate the network signal

Connect the breakout box and evaluate the network with a DSO

Connect the breakout box and evaluate the network with a DVOM

Check power and ground at that module

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