What Quality of Service (QoS) can developers set on the published MQTT messages from their loT devices to the Watson loT Platform so that a message is received exactly once?

The correct answer is C. QoS 2. See the full explanation below for the reasoning.

Question

Options

AQoS 0
BQoS 1
CQoS 2
DQoS 3

How the community answered

(37 responses)

A
3% (1)
B
5% (2)
C
78% (29)
D
14% (5)

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