AET Data Bus Systems and Protocols

Question 1

What is the data transfer rate of ARINC 429 operating in high-speed mode?

Accepted Answer

100 kbps

Answer

12.5 kbps

Answer

1 Mbps

Answer

10 Mbps

Question 2

Which data flow topology best describes ARINC 429?

Accepted Answer

Unidirectional point-to-multipoint bus

Answer

Bidirectional multi-transmitter bus

Answer

Bidirectional command/response protocol

Answer

Full-duplex ring topology

Question 3

How many bits are contained in a standard ARINC 429 data word?

Accepted Answer

32 bits

Answer

16 bits

Answer

24 bits

Answer

64 bits

Question 4

What does the 8-bit 'label' field in an ARINC 429 word identify?

Accepted Answer

The type or parameter of data being transmitted

Answer

The destination receiver address

Answer

The identity of the source transmitter

Answer

The error correction code appended to the word

Question 5

Which encoding scheme is used by ARINC 429?

Accepted Answer

Bipolar Return to Zero (BPRZ)

Answer

Non-Return to Zero (NRZ)

Answer

Manchester II Biphase

Answer

4B/5B encoding

Question 6

What is the maximum number of receivers that can be connected to a single ARINC 429 transmitter?

Accepted Answer

20

Answer

5

Answer

10

Answer

50

Question 7

What information does the SSM (Sign/Status Matrix) field provide in an ARINC 429 word?

Accepted Answer

Data sign and equipment operational status

Answer

Signal synchronization timing

Answer

Secondary system monitor readings

Answer

Serial signal modulation type