You work for a company that is about setting up a country-wide environmental monitoring system for real-time air pollution monitoring. The system, in the first stage, will consist of 10000 sensor end-devices deployed. The sensors have been registered to the appropriate IoT hubs through 100 edge devices. Now you need to deploy the necessary computation logic to the edge devices for particle sensors. Other devices, e.g. NO2 sensors, should be left untouched. 
What do you need to achieve your goal?

Answer options:

A.A deployment manifest; a target condition of properties.desired.deviceType = ‘Particle sensor’; S1 tier IoT Hub
B.A deployment manifest; target condition of tags.deviceType = ‘Particle sensor’; S1 tier IoT Hub
C.A deployment manifest; target condition of tags.deviceType = ‘Particle sensor’; B2 tier IoT Hub
D.A deployment manifest; target condition of tags.deviceType = “Particle sensor”; B2 tier IoT Hub

Correct Answer: B
Option A is incorrect because you can only build a target condition using tags, reported properties, or deviceId. Desired properties cannot be used in target conditions.
Option B is CORRECT because when using automatic deployments, you need a deployment manifest that describes the modules to be deployed, a target condition that determines the devices for the deployment. Edge device management is only available on Standard (Sx) IoT Hubs.
Option C is incorrect because if you want to use Edge devices, your IoT hubs must be in the Standard (S1, S2, S3) tier. Hubs in theB2 tier cannot be used in this scenario.
Option D is incorrect because only single quotes are allowed in the target condition. Don’t use double-quotes. Furthermore, your IoT Hub must be in the S tier.
References: 

https://docs.microsoft.com/en-us/azure/iot-edge/module-deployment-monitoring?view=iotedge-2018-06#target-condition
https://docs.microsoft.com/en-us/azure/iot-edge/how-to-deploy-cli-at-scale?view=iotedge-2018-06#create-a-deployment