Technician A says that a data packet in a typical J1939 transaction consists of 7 fields. Technician B says that each field in a J1939 data packet has identical data volume. Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because a typical J1939 data packet indeed consists of 7 fields: Priority, Reserved, Data Page, PDU Format, PDU Specific, Source Address, and Data Field. Technician B is incorrect because not all fields in a J1939 data packet have the same data volume; for example, the Data Field can vary in size.

Technician a Says That a Data Packet in a Typical