10 interview questions and answers on CAN-XL Protocol
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Here’s a list of questions and answers about the CAN-XL Protocol. This guide can help you prepare for job interviews for CAN-XL Protocol skill requirements.
List of 10 CAN-XL Protocol Questions and Answers
Question 1: What is CAN XL?
Answer 1: It’s the latest version of the Controller Area Network protocol with higher data rates (up to 20 Mbps) and extended payloads.
Question 2: Mention difference between CAN FD and CAN XL.
Answer 2: CAN FD supports 64 bytes max at 5 Mbps; CAN XL supports 2048 bytes at 20 Mbps, improving efficiency.
Question 3: Why is CAN XL important?
Answer 3: It bridges the gap between CAN based and Ethernet based in-vehicle networks, enabling faster and richer data exchange.
Question 4: What layer does CAN XL enhance?
Answer 4: Primarily the Data Link and Physical layers to accommodate higher throughput and reliability.
Question 5: Mention advantages of CAN XL protocol.
Answer 5: High bandwidth, backward compatibility with CAN/CAN FD and lower latency for future ADAS/IVI needs.
Question 6: What physical medium does CAN XL use?
Answer 6: Twisted pair cables similar to legacy CAN, easing transition for OEMs.
Question 7: Is CAN XL compatible with Ethernet?
Answer 7: CAN XL supports Ethernet type frame formats, promoting easier data conversion and hybrid architectures.
Question 8: Where is CAN XL used?
Answer 8: Future automotive networks, especially for zonal architectures and high data rate ECUs.
Question 9: Who develops CAN XL?
Answer 9: The protocol is being developed and standardized by CAN in Automation (CiA).
Question 10: How does it help ADAS?
Answer 10: Supports higher data demands of camera, radar and sensor fusion systems.
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