112-51 · Question #35
Which of the following layers of loT architecture employs protocols and networks for connecting, sending, and receiving data between devices and network?
The correct answer is C. Communication layer. The communication layer of IoT architecture employs protocols and networks for connecting, sending, and receiving data between devices and network. The communication layer is responsible for enabling data exchange among the IoT devices and the cloud or other devices. The communic
Question
Which of the following layers of loT architecture employs protocols and networks for connecting, sending, and receiving data between devices and network?
Options
- ADevice layer
- BCloud layer
- CCommunication layer
- DProcess layer
How the community answered
(27 responses)- A4% (1)
- B4% (1)
- C85% (23)
- D7% (2)
Explanation
The communication layer of IoT architecture employs protocols and networks for connecting, sending, and receiving data between devices and network. The communication layer is responsible for enabling data exchange among the IoT devices and the cloud or other devices. The communication layer can use various types of networks, such as wired, wireless, cellular, or satellite, and various types of protocols, such as TCP/IP, MQTT, CoAP, or ZigBee.
Topics
Community Discussion
8
Toby R.Oct 14, 2025C is the right answer. The communication layer is specifically the part of the IoT architecture that handles the protocols and networks used to move data between devices and the network, things like MQTT, Zigbee, and cellular, while the device layer is just the hardware endpoints and the cloud layer handles storage and processing after the data arrives.
Wesley A.Oct 4, 2025Honest answer, I put A first because I figured devices are the ones doing the actual connecting, but that is the trap right there. The device layer is about the physical hardware sensing or actuating, not about the protocols and networks moving data around. The communication layer is the one sitting in the middle handling how data gets from point A to point B, think MQTT, Zigbee, cellular, whatever transport is in play. Once I stopped thinking about who generates the data and started thinking about who moves it, C locked in immediately.
Arvydas C.Oct 3, 2025The communication layer is the right call here, and the question is actually pretty clean for once. Where people get tripped up is the device layer, because it sounds like it should handle connectivity since devices obviously need to talk to something, but the device layer is really about the sensors, actuators, and edge hardware themselves, not the protocols and transport mechanisms that carry the data. The cloud layer handles processing and storage at the back end, and the process layer sits in the middle doing aggregation or filtering, so neither of those fit the "connecting, sending, and receiving" description the question is going for. C is your answer, covering things like MQTT, Zigbee, LoRaWAN, CoAP, and the cellular or Wi-Fi networks that tie the physical world to the rest of the architecture.
Prof. SaraOct 3, 2025Solid breakdown, and the one thing worth flagging for exam day is that some blueprint frameworks label this the network layer or connectivity layer instead of communication layer, so map your exam's specific terminology before test day because the concept is identical but a vocabulary mismatch on a distractor can cost you the point.
Hiroshi T.Oct 21, 2025Thought A at first, but "protocols and networks for connecting" nails Communication layer cold.
Arvydas C.Oct 24, 2025The "communication layer" phrasing is solid, though I'd sharpen it further by noting that OSI Layer 6 handles the syntax translation that makes that communication intelligible across disparate systems, not just the transport itself.
Prof. SaraOct 31, 2025My first instinct was A, Device layer, because "connecting devices" sounds like it lives where the devices are, but the keyword triplet in the stem, connecting plus sending plus receiving data between devices and network, describes transport-level behavior, and that is exactly what the Communication layer owns in the IoT stack, sitting between the Device layer below it and the Cloud layer above it.
Toby R.Oct 31, 2025Yeah that keyword mapping trick is solid, though on some vendor breakdowns you will see "connecting devices" attributed to a gateway or edge sublayer that straddles Device and Communication, so if the stem says "between devices and the network" specifically, Communication is the safe pick.