Question

Each device has a globally unique identifier known as _________

(a) id

(b) deviceId

(c) accountid

(d) device

I got this question in an international level competition.

My question is taken from Understanding the Intel IoT Analytics Structure topic in section Analyzing Huge Amount of Data with Cloud – based IoT Analytics of IOT

Answer 1

Right answer is (c) accountid

For explanation I would say: As a user, we can work with many accounts. Each account can contain many devices, has a name and a identifier known as accountId. Each device has a globally unique identifier known as deviceId.