What is the connection protocol between FReD and MM?

Question

Options

• AHDMI
• BEthernet
• CI2C
• DFC

• A
  3% (1)
• B
  6% (2)
• C
  88% (29)
• D
  3% (1)

Explanation

I2C (Inter-Integrated Circuit) is the correct protocol because FReD and MM are closely integrated hardware modules that communicate over a simple two-wire serial bus - exactly what I2C is designed for. I2C is standard for short-distance, board-level chip-to-chip communication where low pin count and simplicity matter.

Why the distractors are wrong:

• A (HDMI): HDMI is an audio/video interface for displays and media devices - not a control/data protocol between embedded modules.
• B (Ethernet): Ethernet is a LAN networking protocol suited for longer distances and higher bandwidth; it's overkill and impractical for tightly coupled module communication.
• D (FC / Fibre Channel): FC is a high-speed protocol used in storage area networks (SANs) - far outside the scope of embedded module interconnects.

Memory tip: Think "I2C = Integrated to Integrated Communication" - whenever two internal modules on the same system need to talk, I2C is the go-to protocol. If the connection is between chips or modules (not screens, networks, or storage), default to I2C.

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