PEARSON CAN AND NETWORK
COMMUNICATIONS EXAM
QUESTIONS WITH COMPLETE
SOLUTIONS 2026
Which terminal of the OBD-II data link connector is the chassis ground for all vehicles? -
ANSWERS4
A high-speed CAN BUS communicates with a scan tool through which terminal (s)? -
ANSWERS6 and 14
Technician A says that a break-out box (BOB) can be used to access the BUS terminals
while a scan tool is used to activate the modules. Technician B says that a 38-cavity
diagnostic connector is found on many BMW and Mercedes vehicles under the hood.
Who is right? - ANSWERSBoth A and B
A DMM set to read DC volts is connected across terminals 6 and 14 of the DLC. The
meter reads zero volts at all times, key on or key off. This indicates _______. -
ANSWERSA CAN BUS shorted to ground
Which terminal of the data link connector does General Motors use for Class 2
communication? - ANSWERS2
Which of these is a single-wire serial communications protocol, using one master
control module and many slave modules? - ANSWERSMotorola Interconnect (MI)
An OBD-I Ford is able to provide engine serial data if there are terminals in which
cavities of the DLC? - ANSWERS1 and 3
The UART data BUS operates at a baud rate of ________ bps. - ANSWERS8192
Which of these is a version of Byteflight and is a high-speed serial communication
system for in-vehicle networks? - ANSWERSFlexray BUS
Which of these, commonly designated D2B, is an optical BUS system connecting audio,
video, computer and telephone components in a single-ring structure with a speed of up
to 5,600,000 bps? - ANSWERSDomestic Digital BUS
CAN H and CAN L operate how? - ANSWERSAll of the above
A module is also known as a ________. - ANSWERSNode
COMMUNICATIONS EXAM
QUESTIONS WITH COMPLETE
SOLUTIONS 2026
Which terminal of the OBD-II data link connector is the chassis ground for all vehicles? -
ANSWERS4
A high-speed CAN BUS communicates with a scan tool through which terminal (s)? -
ANSWERS6 and 14
Technician A says that a break-out box (BOB) can be used to access the BUS terminals
while a scan tool is used to activate the modules. Technician B says that a 38-cavity
diagnostic connector is found on many BMW and Mercedes vehicles under the hood.
Who is right? - ANSWERSBoth A and B
A DMM set to read DC volts is connected across terminals 6 and 14 of the DLC. The
meter reads zero volts at all times, key on or key off. This indicates _______. -
ANSWERSA CAN BUS shorted to ground
Which terminal of the data link connector does General Motors use for Class 2
communication? - ANSWERS2
Which of these is a single-wire serial communications protocol, using one master
control module and many slave modules? - ANSWERSMotorola Interconnect (MI)
An OBD-I Ford is able to provide engine serial data if there are terminals in which
cavities of the DLC? - ANSWERS1 and 3
The UART data BUS operates at a baud rate of ________ bps. - ANSWERS8192
Which of these is a version of Byteflight and is a high-speed serial communication
system for in-vehicle networks? - ANSWERSFlexray BUS
Which of these, commonly designated D2B, is an optical BUS system connecting audio,
video, computer and telephone components in a single-ring structure with a speed of up
to 5,600,000 bps? - ANSWERSDomestic Digital BUS
CAN H and CAN L operate how? - ANSWERSAll of the above
A module is also known as a ________. - ANSWERSNode
