300-915 Cisco Developing Solutions Using Cisco IoT and Edge Platforms (DEVIOT) exact Exam Questions

Developing Solutions Using Cisco IoT and Edge Platforms (DEVIOT)

Last Update 51 minutes ago Total Questions : 60

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Question # 11

A company is collecting data from several thousand machines globally. Which software component in the overall architecture is the next destination of the dataflow after the data has been gathered and normalized on the edge data software?

relational database: MySQL

historian database: influxDB

message broker: Apache Kafka

dashboard: Node.js web app

Question # 12

Refer to the exhibit.

Which two statements about MQTT messaging are true? (Choose two.)

Result code 5 means the connection is accepted; result code 0 means the connection is " refused, not authorized " .

Redundant ClientIDs are supported by MQTT brokers.

MQTT does not support a " keep alive " functionality because it runs on top of TCP.

Result code 0 means the connection is accepted; result code 5 means the connection is " refused, not authorized " .

Brokers can send the Last Will and Testament messages on behalf of the client.

Question # 13

Which connector is southbound?

horizontal connector

cloud connector

device connector

universal connector

Question # 14

Refer to the exhibit.

Which line of code completes the Dockerfile?

RUN chmod 777 /usr/bin/sample.py

RUN chown root:root /usr/bin/sample.py

WORKDIR /usr/bin

USER root

Question # 15

The network team of a large international airport is creating a sensor network on their site using the Cisco LoRaWAN solution. Drag and drop the actions from the left to right needed to implement this project. Not all options are used.

Question # 16

Refer to the exhibit.

While troubleshooting an error on an application descriptor for a Docker app in Cisco IOx (package.yaml), the app type appears to be missing. Which app type must be added to the snippet to resolve the issue?

paas

docker-vm

docker

docker-app

Question # 17

An IoT engineer is responsible for security at an organization. Humans and machines need to be allowed to access services like database or compute on AWS. The engineer decides to implement dynamic secrets.

Which method helps to get this implementation accurate from a security point of view?

Create a central secret system for humans and machine to obtain very short-lived dynamic secrets to access any service.

Humans cannot be trusted, and each time they authenticate they should be issued with dynamic secrets.

Machines can be trusted, and they can be issued with static credentials.

Maintain a different service associated to secret systems to issue access.

After a user is authenticated by any trusted system, the user can be trusted to use any service.