Module 6

Question 1

types of iot platform

Answer 1

1. end-to-end iot platforms
2. connectivity platform
3. cloud platform
4. data platform

Question 2

end to end iot platform

Answer 2

1.facilitates the handling of millions of simultaneous device connections by providing hardware, software, connectivity, security and device management tools
2. provides ota(over the air) firmware, cloud management and device monitoring

Question 3

connectivity platform

Answer 3

1. provides cheap and low power connectivity solutions via wifi and cellular technology

Question 4

data platform

Answer 4

provides numerous tools for data routing, facilitate management and visualization of data using data analytics tools.

Question 5

how to validate an effective iot platform

Answer 5

1. scalability 2. reliability 3. customization 4. operations
2. protocols 6. hardware support 7. cloud technology 8. technical support 9. system architecture 10. security 11. operational expense

Question 6

Communication APIs talked about in this module
(full forms)

Answer 6

->API-application programming Interfaces
->REST-Representational State Transfer
->Websocket

Question 7

API

Answer 7

1. an interface used by programs to access an application
2. enables a program to send commands to another program and receive replies from the app.
3. IoT APIs are the interface points between an IoT device and the internet or other network components.

Question 8

REST

Answer 8

1. REST API follows the request response model
2. REST architectural constraints apply to the components ,connectors and data elements
3. motivation for REST was to capture the characteristics of the web which made the web successful.
4. client tries to access these resources via URIs using commands like GET,PUT,POST,DELETE and so on that are defined by HTTP

Question 9

Constraints in rest based API
(explain the points)

Answer 9

1. Client server 2. Stateless 3. Cache-able 4. Layered system 5. User interface 6. Code on demand

Question 10

advantages in rest based API
(explain the points)

Answer 10

1. simplicity
2. flexibility
3. caching
4. stateless

Question 11

disadvantages in rest based API
(explain the points)

Answer 11

1. limited real-time support
2. performance overheard
3. complexity

Question 12

Web socket based communication APIs

Answer 12

1. is a TCP based network protocol. It defines how data can be exchanged two networks
2. TCP establishes connection between two endpoints, which are referred to as sockets making it bi-directional
3. enables direct communication between web application and websocket
4. fast connection so used for real time connections
5. logical choice for any application that requires high speed, low-latency connection

Question 13

architecture of web socket

Answer 13

1. works on the principle of exclusive-pair model
2. need to establish a dedicated connection to start the process and goes on till the connection is terminated.
3. remains open till client sends a request to close the connection
4. less overhead, low traffic, less latency and high throughput

Question 14

advantages of websocket

Answer 14

1. Real time communication
2. efficiency 3. scalability
3. reduced overhead

Question 15

disadvantage of web socket

Answer 15

1. complexity 2. security
2. compatibility

Question 16

comparison

Answer 16

to evaluate the comparison between websocket and REST

Question 17

why scalability issues?
(explain points also)

Answer 17

1. Lack of planning phase
2. compatibility with future devices
3. budgetary constraints

Question 18

scalability challenges
(explain points also)

Answer 18

1. network security
2. privacy 3. governance
3. access control
4. big data generation

Question 19

tips for iot at scale
(explain points)

Answer 19

1. use simple architecture
2. use a decentralized application enablement platform (AEP)