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Developing Solutions Using Cisco IoT and Edge Platforms (DEVIOT) Questions and Answers

Question 1

What is a major difference of MQTT in terms of design compared to AMQP?

Options:

A.

MQTT requires more bandwidth.

B.

MQTT has very low overhead.

C.

MQTT has more advanced routing features for messages.

D.

MQTT provides routing based on headers.

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Question 2

Which two security approaches help build a strong authentication scheme? (Choose two.)

Options:

A.

connection based on location

B.

session IDs accepted only from cookies

C.

maximum allowed connections

D.

user logout

E.

session logout because of inactivity

Question 3

Mosquitto was installed correctly on the Cisco IR829 router as a Cisco IOx application. When the sensor is connected to the broker on the Cisco IR829 router with the default port, the connection is refused (Error Code 5).

Which action should be done to resolve the issue?

Options:

A.

Insert in the IOS config: ip nat inside source static tcp 1883 interface GigabitEthernet0 1883

B.

Insert in the package_config.ini file under section ports: tcp: ["8883"]

C.

Use the correct username and password.

D.

Insert in the package.yaml file under section ports: tcp: ["1883"]