You are operating an industrial IoT solution where devices are deployed on the shop-floor area of a manufacturing plant.
In addition to a number of simple temperature and humidity sensors, there are edge devices in your network with processing modules for each type of sensor.
In IoT Central you try to configure a rule to trigger alerts when the average temperature in the past 10 minutes exceeds 50 degrees and the humidity is less than 60%
Which of the following statements is true for the given scenario?
Click on the arrows to vote for the correct answer
A. B. C. D.Correct Answer: C.
Option A is correct because you can build rules from any valid telemetry data type.
The conditions are combined with logical AND operations.
The only exceptions are edge devices where telemetry from different modules cannot be combined.
Option B is incorrect because, actually you can.
You can have any mix of sensors and devices in your IoT network.
Option C is CORRECT because for edge devices, there is a limitation on setting rules: rules combining conditions on telemetry data originating from different modules on an edge device will result in an error and cannot be used.
Option D is incorrect because there is no such limitation in IoT Central.
When you add multiple conditions to a rule, they are evaluated True when all the conditions are True (there is an AND relationship between them).
Reference:
The correct answer to the question is C. You cannot set rules which combine conditions on data coming from different modules of the edge device.
Explanation:
In the given scenario, there are multiple types of sensors deployed in the manufacturing plant, and the edge devices have processing modules for each type of sensor. IoT Central is used to configure a rule that triggers alerts when the average temperature in the past 10 minutes exceeds 50 degrees and the humidity is less than 60%.
Option A is not correct because it is allowed to set rules on telemetry from different modules. In fact, one of the advantages of using an edge device is that it allows for processing and analysis of data from multiple types of sensors.
Option B is also not correct because it is possible to have simple sensors and edge devices with the same type of sensors in the same network. This is a common scenario in industrial IoT solutions where there may be a mix of different types of devices deployed in the same environment.
Option D is also not correct because it is possible to use rules which combine conditions on several sensors. For example, a rule could be configured to trigger an alert when the temperature from one sensor exceeds a certain threshold and the humidity from another sensor falls below a certain level.
Option C is the correct answer because IoT Central does not allow for setting rules which combine conditions on data coming from different modules of the edge device. In other words, the conditions must be based on data from a single module or sensor type. Therefore, in the given scenario, it would not be possible to create a rule that combines the temperature data from one module and the humidity data from another module.