The maximum number of Virtual Devices (Virtual Nodes) that can be connected to an NMEA 2000 backbone is___.

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Multiple Choice

The maximum number of Virtual Devices (Virtual Nodes) that can be connected to an NMEA 2000 backbone is___.

Explanation:
Virtual Devices on a NMEA 2000 backbone must each have a unique address on the CAN-based network. The addressing space available to these devices is finite because NMEA 2000 uses an 8-bit node address, giving up to 256 possible addresses. Some of that space is reserved for system use, so the practical limit is 252 addresses for actual virtual devices. This is why the maximum number of Virtual Devices you can have on one backbone is 252. The other numbers don’t align with the protocol’s addressing scheme: they either don’t fit the 8-bit address space or ignore the reserved/system addresses.

Virtual Devices on a NMEA 2000 backbone must each have a unique address on the CAN-based network. The addressing space available to these devices is finite because NMEA 2000 uses an 8-bit node address, giving up to 256 possible addresses. Some of that space is reserved for system use, so the practical limit is 252 addresses for actual virtual devices. This is why the maximum number of Virtual Devices you can have on one backbone is 252. The other numbers don’t align with the protocol’s addressing scheme: they either don’t fit the 8-bit address space or ignore the reserved/system addresses.

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