VEHICLE COMMUNICATION
NETWORKS EXAM QUESTIONS WITH
COMPLETE SOLUTIONS 2026
The Media Oriented System Transport (MOST) cooperation data bus system uses fiber
optics to transmit data. T or F - ANSWERSTrue
Wireless networks require the use of one wire to transmit information. T or F -
ANSWERSFalse
Controller Area Network CAN B bus diagnostics is being discussed. Technician A says
some modules do not set specific codes that isolate the type of fault. Technician B says
if the fault code indicates both CAN B+ and CAN B- circuits are low or high, a total bus
failure has occurred. Who is correct? - ANSWERSBoth
Technician A says ISO 9141-2 is not a network protocol since it can be used only for
diagnostic purposes. Technician B says ISO 9141-2 is a Class B system that has a
baud rate of 10.4Kb/s. Who is correct? - ANSWERSBoth
Technician A says modules on the Media Oriented System Transport (MOST) data bus
use an LED, photodiode, and a MOST transceiver to communicate with light signal.
Technician B says the Media Oriented System Transport (MOST) system uses fiber
optics to transmit data at an extremely fast rate. Who is correct? - ANSWERSBoth
Controller Area Network (CAN) bus diagnostics is being discussed. Technician A says
the first step is to verify the customers complaint. Technician B says you must
determine which bus network is at fault. Who is correct? - ANSWERSBoth
All of the following are facts about Controller Area Network (CAN) bus diagnostics,
Except:
-A normal voltmeter reading on the CAN B (+) circuit with the ignition in the RUN
position is between 280 and 920 mv.
-A normal voltmeter reading on the CAN B (+) circuit with the ignition in the OFF
position and the bus asleep is zero volts.
-A normal voltmeter reading on the CAN B (-) circuit with the ignition in the RUN
position is between 4.08 and 4.72 v.
-A normal voltmeter reading on the CAN B (-) circuit with the ignition in the OFF
position and the bus asleep is zero volts - ANSWERS-A normal voltmeter reading on
the CAN B (-) circuit with the ignition in the OFF position and the bus asleep is zero
Controller Area Network (CAN) bus diagnostics is being discussed. Technician A says a
scan tool is used to access the central gateway module for the bus network. Technician
NETWORKS EXAM QUESTIONS WITH
COMPLETE SOLUTIONS 2026
The Media Oriented System Transport (MOST) cooperation data bus system uses fiber
optics to transmit data. T or F - ANSWERSTrue
Wireless networks require the use of one wire to transmit information. T or F -
ANSWERSFalse
Controller Area Network CAN B bus diagnostics is being discussed. Technician A says
some modules do not set specific codes that isolate the type of fault. Technician B says
if the fault code indicates both CAN B+ and CAN B- circuits are low or high, a total bus
failure has occurred. Who is correct? - ANSWERSBoth
Technician A says ISO 9141-2 is not a network protocol since it can be used only for
diagnostic purposes. Technician B says ISO 9141-2 is a Class B system that has a
baud rate of 10.4Kb/s. Who is correct? - ANSWERSBoth
Technician A says modules on the Media Oriented System Transport (MOST) data bus
use an LED, photodiode, and a MOST transceiver to communicate with light signal.
Technician B says the Media Oriented System Transport (MOST) system uses fiber
optics to transmit data at an extremely fast rate. Who is correct? - ANSWERSBoth
Controller Area Network (CAN) bus diagnostics is being discussed. Technician A says
the first step is to verify the customers complaint. Technician B says you must
determine which bus network is at fault. Who is correct? - ANSWERSBoth
All of the following are facts about Controller Area Network (CAN) bus diagnostics,
Except:
-A normal voltmeter reading on the CAN B (+) circuit with the ignition in the RUN
position is between 280 and 920 mv.
-A normal voltmeter reading on the CAN B (+) circuit with the ignition in the OFF
position and the bus asleep is zero volts.
-A normal voltmeter reading on the CAN B (-) circuit with the ignition in the RUN
position is between 4.08 and 4.72 v.
-A normal voltmeter reading on the CAN B (-) circuit with the ignition in the OFF
position and the bus asleep is zero volts - ANSWERS-A normal voltmeter reading on
the CAN B (-) circuit with the ignition in the OFF position and the bus asleep is zero
Controller Area Network (CAN) bus diagnostics is being discussed. Technician A says a
scan tool is used to access the central gateway module for the bus network. Technician
