VEHICLE COMMUNICATION SYSTEM EXAM (LATEST) ||
MOST RECENT EXAM 2026|2027 ACTUAL COMPLETE REAL
EXAM QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+ | GUARANTEED
SUCCESS!! NEWEST EXAM | JUST RELEASED!!
what is the resistance of the terminating resistor on networks
equipped with one start connector? - ANSWER-60 ohms
with the bus active and no faults present, what voltages should
be measured on CAN-C(+)? - ANSWER-approximately 3.2v
what Atlantis-high network uses splice block connectors? -
ANSWER-CAN-BH
with the bus active and no faults present, what voltages should
be measured on CAN-B(-)? - ANSWER-approximately 0.4v
which resource should be used first for troubleshooting DRB III
Emulator concerns? - ANSWER-wiTECH knowledge base
with the bus active and no faults present, what voltages should
be measured on LIN? - ANSWER-7.0v-10.0v
what electrical architecture requires the use of the mopar
diagnostic pod (MPD) for diagnostics? - ANSWER-Atlantis-high
,which of the following scan tool functions ate prevented if a
security gateway (SGW) becomes locked? select all that apply.
- ANSWER-start an actuator
run a system test
flash program a module
with the bus active and no faults present, what voltages should
be measured on CAN-C(-)? - ANSWER-approximately 1.8v
what Atlantis vehicles uses splice block connectors on their
CAN buses? select all that apply. - ANSWER-ga alfa glulia
mp jeep compass
what are the key differences between CAN-FD and CAN-C?
select all that apply. - ANSWER-flexible bit rates
larger bias voltage
true or false? a short tot ground on CAN-B(+) will ALWAYS
prevent communication from occurring on the CAN-B bus. -
ANSWER-false
true or false? wiTECH 2.0 is compatible with legacy
architectures and should be used for diagnosing their
networks. - ANSWER-false
what is the normal operation speed of most Automotive
Ethernet networks? - ANSWER-100 Mbps
,with the bus active and no faults present, what Voltages should
be measured on CAN-B(+)? - ANSWER-approximately 4.8v
the security gateway (SGW) was introduced in what model year
vehicles? - ANSWER-2018
which of the following communication networks is a single-wire
network? - ANSWER-LIN
which diagnostic software and scan tool should be used to
diagnose legacy vehicle architectures? - ANSWER-wiTECH 1.0
with the enhanced DRB emulator software
what wiTECH function is best suited for testing intermittent
communication faults? - ANSWER-loss of comm test
which diagnostic strategy can be used while performing the
loss of comm test to help isolate intermittent concerns? -
ANSWER-perform a wiggle test on the harness and connectors
which of the following faults could cause ALL of the modules to
appear as unresponsive on the wiTECH topology? - ANSWER-
failed SGW
shorted diagnostic CAN circuits
What is the primary purpose of a vehicle communication system?
A. To increase engine horsepower
, B. To enable information exchange between vehicle components and
external devices
C. To reduce tire wear
D. To improve fuel octane rating
Answer: B. To enable information exchange between vehicle
components and external devices
Rationale: Vehicle communication systems allow electronic control units
(ECUs), sensors, actuators, and external networks to exchange data
efficiently. This communication supports vehicle performance,
diagnostics, safety, and driver assistance features. The other options are
unrelated to the primary function of communication systems.
Which network protocol is most commonly used for communication
between electronic control units (ECUs)?
A. Bluetooth
B. Ethernet
C. Controller Area Network (CAN)
D. USB
Answer: C. Controller Area Network (CAN)
Rationale: CAN is the industry-standard communication protocol for
interconnecting ECUs because it is reliable, fault-tolerant, and designed
for real-time automotive applications. Bluetooth, Ethernet, and USB have
automotive uses but are not the primary ECU communication protocol in
most vehicles.
MOST RECENT EXAM 2026|2027 ACTUAL COMPLETE REAL
EXAM QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+ | GUARANTEED
SUCCESS!! NEWEST EXAM | JUST RELEASED!!
what is the resistance of the terminating resistor on networks
equipped with one start connector? - ANSWER-60 ohms
with the bus active and no faults present, what voltages should
be measured on CAN-C(+)? - ANSWER-approximately 3.2v
what Atlantis-high network uses splice block connectors? -
ANSWER-CAN-BH
with the bus active and no faults present, what voltages should
be measured on CAN-B(-)? - ANSWER-approximately 0.4v
which resource should be used first for troubleshooting DRB III
Emulator concerns? - ANSWER-wiTECH knowledge base
with the bus active and no faults present, what voltages should
be measured on LIN? - ANSWER-7.0v-10.0v
what electrical architecture requires the use of the mopar
diagnostic pod (MPD) for diagnostics? - ANSWER-Atlantis-high
,which of the following scan tool functions ate prevented if a
security gateway (SGW) becomes locked? select all that apply.
- ANSWER-start an actuator
run a system test
flash program a module
with the bus active and no faults present, what voltages should
be measured on CAN-C(-)? - ANSWER-approximately 1.8v
what Atlantis vehicles uses splice block connectors on their
CAN buses? select all that apply. - ANSWER-ga alfa glulia
mp jeep compass
what are the key differences between CAN-FD and CAN-C?
select all that apply. - ANSWER-flexible bit rates
larger bias voltage
true or false? a short tot ground on CAN-B(+) will ALWAYS
prevent communication from occurring on the CAN-B bus. -
ANSWER-false
true or false? wiTECH 2.0 is compatible with legacy
architectures and should be used for diagnosing their
networks. - ANSWER-false
what is the normal operation speed of most Automotive
Ethernet networks? - ANSWER-100 Mbps
,with the bus active and no faults present, what Voltages should
be measured on CAN-B(+)? - ANSWER-approximately 4.8v
the security gateway (SGW) was introduced in what model year
vehicles? - ANSWER-2018
which of the following communication networks is a single-wire
network? - ANSWER-LIN
which diagnostic software and scan tool should be used to
diagnose legacy vehicle architectures? - ANSWER-wiTECH 1.0
with the enhanced DRB emulator software
what wiTECH function is best suited for testing intermittent
communication faults? - ANSWER-loss of comm test
which diagnostic strategy can be used while performing the
loss of comm test to help isolate intermittent concerns? -
ANSWER-perform a wiggle test on the harness and connectors
which of the following faults could cause ALL of the modules to
appear as unresponsive on the wiTECH topology? - ANSWER-
failed SGW
shorted diagnostic CAN circuits
What is the primary purpose of a vehicle communication system?
A. To increase engine horsepower
, B. To enable information exchange between vehicle components and
external devices
C. To reduce tire wear
D. To improve fuel octane rating
Answer: B. To enable information exchange between vehicle
components and external devices
Rationale: Vehicle communication systems allow electronic control units
(ECUs), sensors, actuators, and external networks to exchange data
efficiently. This communication supports vehicle performance,
diagnostics, safety, and driver assistance features. The other options are
unrelated to the primary function of communication systems.
Which network protocol is most commonly used for communication
between electronic control units (ECUs)?
A. Bluetooth
B. Ethernet
C. Controller Area Network (CAN)
D. USB
Answer: C. Controller Area Network (CAN)
Rationale: CAN is the industry-standard communication protocol for
interconnecting ECUs because it is reliable, fault-tolerant, and designed
for real-time automotive applications. Bluetooth, Ethernet, and USB have
automotive uses but are not the primary ECU communication protocol in
most vehicles.
