NCT Technology & Digital Tools 2 — Questions and Answers
Question 1: Which communication protocol is most commonly used by modern telematics devices to transmit vehicle data to a fleet management platform?
- RS-232 serial
- CAN bus direct wire
- Cellular (4G/LTE) (Correct answer)
- Bluetooth only
Correct answer: Cellular (4G/LTE)
Modern telematics units use cellular networks (4G/LTE) to transmit vehicle data in real time to cloud-based fleet management platforms.
Question 2: A fleet technician uses a bi-directional scan tool. What capability does 'bi-directional' provide that a basic code reader does not?
- Reading VIN numbers automatically
- Commanding vehicle actuators to test components (Correct answer)
- Displaying freeze frame data
- Printing diagnostic reports
Correct answer: Commanding vehicle actuators to test components
Bi-directional scan tools can send commands to the vehicle's modules to activate actuators (e.g., cycle fuel injectors, operate ABS motors) for component-level testing.
Question 3: In a fleet management system, what does the term 'geofencing' refer to?
- Installing physical barriers around a depot
- Defining virtual geographic boundaries that trigger alerts when crossed (Correct answer)
- Encrypting GPS coordinates for security
- Setting maximum speed limits via the ECM
Correct answer: Defining virtual geographic boundaries that trigger alerts when crossed
Geofencing creates virtual geographic perimeters in fleet software; when a vehicle enters or exits the zone, the system triggers a notification or alert.
Question 4: An Electronic Logging Device (ELD) is mandated primarily to record which data?
- Fuel consumption and emissions
- Driver hours of service (HOS) (Correct answer)
- Vehicle tire pressure readings
- Engine coolant temperature logs
Correct answer: Driver hours of service (HOS)
ELDs are federally mandated to automatically record a driver's hours of service to ensure compliance with FMCSA regulations.
Question 5: Which OBD-II Mode provides access to live sensor data (also called Parameter IDs or PIDs)?
- Mode $01 (Correct answer)
- Mode $03
- Mode $07
- Mode $09
Correct answer: Mode $01
OBD-II Mode $01 (Mode 1) is the 'Show current data' mode that returns real-time sensor values using Parameter IDs (PIDs).
Question 6: A fleet manager notices a pattern of harsh braking events in telematics reports. Which technology within the telematics device detects these events?
- GPS antenna
- Accelerometer / G-force sensor (Correct answer)
- OBD-II fuel trim data
- Cellular signal strength monitor
Correct answer: Accelerometer / G-force sensor
Telematics devices use built-in accelerometers to measure G-forces and detect harsh braking, rapid acceleration, and hard cornering events.
Question 7: When performing a key programming procedure on a modern fleet vehicle, which tool is typically required in addition to a scan tool?
- An analog multimeter
- A factory-level or OEM-equivalent immobilizer programmer (Correct answer)
- A standard DVOM only
- A tire pressure gauge
Correct answer: A factory-level or OEM-equivalent immobilizer programmer
Key programming and immobilizer functions require a factory-level or OEM-equivalent programmer because these security functions are not accessible through generic scan tools.
NCT Technology & Digital Tools 2
Which communication protocol is most commonly used by modern telematics devices to transmit vehicle data to a fleet management platform?