Chapter 8 Flashcards
1
Q
- Which of the following is least likely to have any processing capability?
A. Controller
B. Node
C. ECU
D. Sensor
A
D sensor
2
Q
- Which of the following terms describes the signal data rate in a CAN bus transmission?
A. Bus arbitration
B. Frequency
C. Baud rate
D. Bandwidth
A
C baud rate
3
Q
- Which of the following rates (quantifies) the speed limit of a communications channel such as CAN bus?
A. Bus arbitration
B. Frequency
C. Baud rate
D. Bandwidth
A
D bandwidth
4
Q
- Which of the following best describes a current vehicle CAN bus network?
A. Serial communications network
B. Parallel communications network
C. Optical communications network
D. Wireless communications network
A
A serial communications network
5
Q
- Technician A says that any ECU with an address on the CAN bus network can receive messages. Technician B says that the terms controller and node usually refer to the same device in the context of a CAN bus network. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
A
C both
6
Q
- What differentiates a CAN message described as a data frame from one described as a remote frame?
A. A data frame is a request for information from another node.
B. A remote frame is a request for information from another node.
C. A data frame has a total of 32 bits.
D. A remote frame contains more data fields than a data frame.
A
B remote frame request for information from another node
7
Q
- Technician A says that an automobile serial CAN bus has a characteristic impedance of 120 ohms. Technician B says that characteristic impedance should be verified using a DMM in resistance mode. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
A
C Both
8
Q
- How is the numeral 13 expressed using hexadecimal code?
A. 1101
B. 0013
C. C
D. D
A
D D
9
Q
- When analyzing a CAN bus data message, which of the following would be described as a recessive bit?
A. Logic 0
B. Logic 1
C. 1102
D. 1962
A
B logic 1
10
Q
- On a CAN bus J1962 DLC, which of the following terminal pin assignments would be associated with CAN-H?
A. 1
B. 6
C. 14
D. 16
A
B terminal 6
11
Q
- Which ECU internal circuit is used to actuate processing outcomes?
A. Analog to digital converter (ADC)
B. Microprocessor
C. Read-only memory
d. Drivers
A
D drivers
12
Q
- How many terminating resistors are required on a serial CAN bus network?
A. One
B. Two
C. Three
D. Four
A
B 2
13
Q
- What is used to produce the sound wave emitted from an ultrasonic (acoustic) sensor used to measure fluid level?
A. Piezo stack
B. Solenoid
C. Miniature speaker
D. Vibration motor
A
A peizo stack
14
Q
- Where would you almost certainly find a MAF sensor in an FCEV?
A. Fuel cell air management system
B. Air-cooled EESS
C. Traction motor intake system
D. PME cooling circuit
A
A fuel cell air system
15
Q
- What field on a data packet message defines the priority of the message contents on the bus?
A. Arbitration
B. Start of frame (SOF)
C. Cyclic redundancy check (CRC)
D. Acknowledgement (Ack)
A
A arbitration
16
Q
- Technician A says that the term driver can be used to describe the software in an ECU that converts processing cycle outcomes into action. Technician B says that the term driver can be used to describe the hardware in an ECU that converts processing cycle outcomes into action. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
A
C both
17
Q
- When telematics enable a manufacturer to read data from an EV CAN bus operating on a highway, which of the following modes would accurately describe the communication?
A. I2V
B. V2I
C. V2V
D. I2I
A
B V2I
