200-401 · Question #50
EtherNet/IP is an Ethernet implementation of which protocol?
The correct answer is A. CIP. EtherNet/IP is an Ethernet adaptation of CIP (Common Industrial Protocol), an open industrial protocol managed by ODVA that defines a common application layer independent of the physical network - making A correct. DeviceNet (C) and ControlNet (D) are distractors because they…
Question
EtherNet/IP is an Ethernet implementation of which protocol?
Options
- ACIP
- BIndustrial Protocol
- CDeviceNet
- DControlNet
How the community answered
(22 responses)- A91% (20)
- B5% (1)
- C5% (1)
Explanation
EtherNet/IP is an Ethernet adaptation of CIP (Common Industrial Protocol), an open industrial protocol managed by ODVA that defines a common application layer independent of the physical network - making A correct. DeviceNet (C) and ControlNet (D) are distractors because they are also CIP-based networks, but they run over different physical media (CAN bus and coax/fiber, respectively), not Ethernet - so they are siblings of EtherNet/IP, not its underlying protocol. "Industrial Protocol" (B) is a generic phrase, not a real protocol name, and serves as a plausible-sounding but meaningless distractor.
Memory tip: Think of CIP as the "engine" that powers a family of networks - EtherNet/IP, DeviceNet, and ControlNet all share the same CIP engine but plug into different physical "chassis." The "/IP" in EtherNet/IP stands for Industrial Protocol, directly naming CIP's role.
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