L3

Question 1

What are the types of users in an IoT domain model?

Answer 1

human user or active digital artifact

Question 2

What are the entities in the IoT domain model?

Answer 2

Physical entity: any physical object or part of the environment that can be identified, such as humans, rooms, cars, computers

Virtual entity (represent physical entity) is a digital artefact.

Question 3

What are two types of virtual entities?

Answer 3

Passive digital artefacts: passive software elements such as database entries

Active Digital Artefacts: running software applications

Question 4

Why is the cardinality 1 for the relationship between virtual entity and physical entity?

Answer 4

Physical entity can be represented by one or more virtual entities but a virtual entity can only be represented by one physical entity.

Question 5

Why does a virtual entity have an xor relationship with the types of digital artefacts?

Answer 5

Because it cannot be passive and active

Question 6

What is the use of a device?

Answer 6

relates an object of the physical world to a virtual entity in the digital world

Question 7

What are the three device categories?

Answer 7

Sensors: monitor and provide information about the PE

Tags: to identify PE

Actuators: to modify the physical state of a PE

Question 8

What are resources? What are the two types of resources?

Answer 8

Resources: software components that provide data from or are used in the actuation on PE

On-device resources: hosted on devices

Network resources: available somewhere on the network