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300-915 Exam Dumps : Developing Solutions Using Cisco IoT and Edge Platforms (DEVIOT)

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

Question 1

When trying to subscribe to an MQTT broker on the internet, the MQTT client is on a private subnet and must be NATed to reach the public broker.

What is the expected outcome when this configuration is in place?

Options:

A.

The client periodically reconnects to the default gateway.

B.

The client connects only once using the PENDING message to the broker.

C.

The client periodically reconnects to the broker over the NAT connection.

D.

The client connects only once using the CONNECT massage to the broker.

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Question 2

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.

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"]