Chapter 10: Vehicle Communication Networks Exam Prep
Pack Latest Update 2026 | Questions & Solutions |
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1. Describe how different manufacturers refer to the J1850 protocol and why this
might be significant.
Different manufacturers refer to the J1850 protocol by the same name,
showing a lack of innovation.
The J1850 protocol is not used by any manufacturers, as they have
moved to newer technologies.
Different manufacturers refer to the J1850 protocol by distinct
names, which reflects their proprietary adaptations and can affect
compatibility and communication between vehicles and diagnostic
tools.
All manufacturers use the same name for the J1850 protocol, indicating
a universal standard.
2. Describe the significance of using fiber optics in the Media Oriented System
Transport (MOST).
Fiber optics is primarily used for power supply in MOST.
Fiber optics reduces the amount of data transmitted in MOST.
Fiber optics allows for high-speed transmission of audio and video
data with minimal interference.
Fiber optics is used to transmit only control signals.
3. The rate at which how fast data is sent over a serial line in units of bps
Active
Baud
, Discrete
Universal Serial Bus
4. What is a protocol?
A Network connection
An OSI Layer
A unit of data
Communication rules
5. Describe how multiplexing contributes to the efficiency of vehicle
communication networks.
Multiplexing allows only one control module to communicate at a
time, enhancing data integrity.
Multiplexing enables multiple control modules to share data over a
single circuit, which minimizes the amount of wiring needed.
Multiplexing is a method that isolates control modules to prevent data
collisions.
Multiplexing increases the number of circuits required for data sharing
among control modules.
6. Describe the significance of baud rate in the context of vehicle
communication protocols.
Baud rate indicates the speed of data transmission, which is crucial
for ensuring timely communication between control modules.
Baud rate is irrelevant to vehicle communication protocols.
Baud rate determines the physical size of the control modules.
Baud rate refers to the amount of wiring needed for a network.
, 7. What is the primary function of a security gateway in vehicle communication
networks?
Reduces the amount of wiring needed in the vehicle.
Secures the vehicle's network and connects it to external
components.
Increases the speed of data transmission within the vehicle.
Facilitates communication between different vehicle control modules.
8. If a vehicle's communication network is upgraded from Class B to Class C,
what changes can be expected in data transmission speed?
Increased wiring complexity
No change in data transmission speed
Increased data transmission speed
Decreased data transmission speed
9. Describe how a ring network's structure allows for continued communication
despite node failures.
A ring network's circular structure allows data to travel in both
directions, enabling communication to continue even if one node
fails.
A ring network can only communicate in one direction, making it
vulnerable to failures.
A ring network relies on a central hub, so communication stops if a
node fails.
A ring network uses a single pathway, which causes communication to
cease if interrupted.
10. Describe the significance of the frequency range used by Bluetooth
technology in vehicle communication networks.
Pack Latest Update 2026 | Questions & Solutions |
Instant Download PDF
1. Describe how different manufacturers refer to the J1850 protocol and why this
might be significant.
Different manufacturers refer to the J1850 protocol by the same name,
showing a lack of innovation.
The J1850 protocol is not used by any manufacturers, as they have
moved to newer technologies.
Different manufacturers refer to the J1850 protocol by distinct
names, which reflects their proprietary adaptations and can affect
compatibility and communication between vehicles and diagnostic
tools.
All manufacturers use the same name for the J1850 protocol, indicating
a universal standard.
2. Describe the significance of using fiber optics in the Media Oriented System
Transport (MOST).
Fiber optics is primarily used for power supply in MOST.
Fiber optics reduces the amount of data transmitted in MOST.
Fiber optics allows for high-speed transmission of audio and video
data with minimal interference.
Fiber optics is used to transmit only control signals.
3. The rate at which how fast data is sent over a serial line in units of bps
Active
Baud
, Discrete
Universal Serial Bus
4. What is a protocol?
A Network connection
An OSI Layer
A unit of data
Communication rules
5. Describe how multiplexing contributes to the efficiency of vehicle
communication networks.
Multiplexing allows only one control module to communicate at a
time, enhancing data integrity.
Multiplexing enables multiple control modules to share data over a
single circuit, which minimizes the amount of wiring needed.
Multiplexing is a method that isolates control modules to prevent data
collisions.
Multiplexing increases the number of circuits required for data sharing
among control modules.
6. Describe the significance of baud rate in the context of vehicle
communication protocols.
Baud rate indicates the speed of data transmission, which is crucial
for ensuring timely communication between control modules.
Baud rate is irrelevant to vehicle communication protocols.
Baud rate determines the physical size of the control modules.
Baud rate refers to the amount of wiring needed for a network.
, 7. What is the primary function of a security gateway in vehicle communication
networks?
Reduces the amount of wiring needed in the vehicle.
Secures the vehicle's network and connects it to external
components.
Increases the speed of data transmission within the vehicle.
Facilitates communication between different vehicle control modules.
8. If a vehicle's communication network is upgraded from Class B to Class C,
what changes can be expected in data transmission speed?
Increased wiring complexity
No change in data transmission speed
Increased data transmission speed
Decreased data transmission speed
9. Describe how a ring network's structure allows for continued communication
despite node failures.
A ring network's circular structure allows data to travel in both
directions, enabling communication to continue even if one node
fails.
A ring network can only communicate in one direction, making it
vulnerable to failures.
A ring network relies on a central hub, so communication stops if a
node fails.
A ring network uses a single pathway, which causes communication to
cease if interrupted.
10. Describe the significance of the frequency range used by Bluetooth
technology in vehicle communication networks.
