Latest PDF of 300-915: Developing Solutions Using Cisco IoT and Edge Platforms (DEVIOT)

Developing Solutions Using Cisco IoT and Edge Platforms (DEVIOT) Practice Test

300-915 Exam Format | Course Contents | Course Outline | Exam Syllabus | Exam Objectives

Exam Code : 300-915
Exam Name : Developing Solutions Using Cisco IoT and Edge Platforms - DEVIOT
Duration : 90 Min.

Exam Description
Developing Solutions Using Cisco IoT & Edge Platforms v1.0 (DEVIOT 300-915) is a 90-minute exam that is associated with the DevNet Professional Certification. This exam tests a candidate's IoT application development knowledge as it pertains to Cisco IoT edge compute and network architecture including Cisco IOx and Cisco EFM, IoT Data Visualization, and security methods. The course, Developing Solutions using Cisco IoT & Edge Platforms, helps candidates to prepare for this exam.

1.0 Cisco Network IoT Architecture 20%
1.1 Interpret the data flow of a topology that includes:
1.1.a gateways
1.1.b access points
1.1.c firewalls (including industrial firewalls)
1.1.d routers
1.1.e switches
1.2 Describe the purpose, functionality, and use of these operational technology components:
1.2.a PLCs and operations
1.2.b embedded microcontrollers
1.2.c RTOS systems
1.2.d Cisco interfaces (serial, sensors, I2C, and USC)
1.2.e communication protocols (BLE, WiFi, Ethernet, and LoraWAN)
1.2.f communication standards (DDS, OPC UA, MT Connect, and Open PLC)
1.3 Describe IoT requirements related to networking and device configuration policies (including configuring IOS commands to enable IOx, port and protocol needs of an application, and security and prioritization of data)
1.4 Construct a workflow to connect a sensor
1.5 Troubleshoot sensor connectivity issue

2.0 Compute and Analysis 10%
2.1 Compare the characteristics, capabilities, and use of edge devices to generic compute devices
2.2 Determine the use of cloud or specific edge devices for a given application scenario
2.3 Analyze application resource usage information to determine any required changes to the application or hardware
2.4 Construct a Python script to deploy an application at the edge using FND and GMM APIs
2.5 Troubleshoot application resources usage and network connectivity issues when using FND and GMM APIs
2.6 Determine data handling procedure and action to take with edge data based on business requirements

3.0 Cisco IOx IoT Software 20%
3.1 Describe the capabilities of a Cisco IOx application
3.2 Troubleshoot a Dockerfile for Cisco IOx
3.3 Describe the process to build applications for Cisco IOx
3.4 Identify the troubleshooting approaches for a deployed application for Cisco IOx
3.5 Describe the process to deploy an Cisco IOx application into a CI/CD on platforms (such as FND, Kinetic GMM, or Directly to IOx)
3.6 Construct a Cisco IOx application to meet requirements given SDK documentation

4.0 Cisco Edge Data IoT Software 15%
4.1 Describe characteristics of edge data services
4.2 Analyze a DSLink (extracting data from a sensor)
4.3 Identify the process to send data to a public cloud provider

5.0 Open Source IoT Software 10%
5.1 Evaluate the flow and processing of data from sensor to cloud in a given scenario
5.2 Compare characteristics and usage of MQTT and AMQP
5.3 Determine the output from given messages and subscription details
5.4 Identify broker QoS level for messages in a given scenario
5.5 Diagnose issues with broker deployment and application connection

6.0 IoT Data Visualization 10%
6.1 Describe the characteristics and capabilities of data visualization tools (such as Freeboard, Grafanna, and Kibana)
6.2 Identify the data visualization technique to meet business requirements
6.3 Interpret visualized data

7.0 Security 15%
7.1 Identify methods to implement a secure software development life cycle
7.2 Identify methods to secure an application and infrastructure during production and testing in a CI/CD pipeline
7.3 Describe risk management (including security challenges in IT and operational technology)
7.4 Describe the concepts related to confidentiality, integrity, and availability
7.5 Describe the capabilities of:
7.5.a ISE and ISE integration
7.5.b pxGRID
7.5.c AMP for Endpoints proxy
7.5.d Cisco Tetration
7.5.e StealthWatch (Enterprise and Cloud)
7.5.f Cisco Cloudlock

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300-915
Developing Solutions Using Cisco IoT and Edge Platforms
(DEVIOT)
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Question #52 Section 1
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?
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"]
Answer: C
Question #53 Section 1
What are two functionalities of edge data services? (Choose two.)
A. creating a machine learning data model
B. supporting many interfaces and APIs
C. applying advanced data analytics
D. filtering, normalizing and aggregating data
E. saving data for a prolonged time period
Answer: DE
Question #54 Section 1
Refer to the exhibit. The red line represents the energy consumption of an industrial machine.
Which two statements about the graphs are true? (Choose two.)
A. The orange graph is expected to drop to zero for a brief period around the midpoint on the x axis.
B. The red graph contains the raw data points.
C. The green graph is the mean value of the data points.
D. The green graph does not give us any valuable information.
E. The orange graph has three values on the y-axis.
Answer: BC
Question #55 Section 1
Refer to the exhibit. When a laptop is connected to a device via a serial connection, which action makes the output readable?
A. Change the baudrate in the connection settings.
B. Reboot the device in case a firmware error is the issue.
C. Change the power level of the device.
D. Change the unicode settings to UTF-8.
Answer: A
Question #56 Section 1
Which action should be taken when a southbound device is not connecting?
A. Verify the gateway link status.
B. Review the edge application logs.
C. Verify the sensor status.
D. Redeploy the edge application.
Answer: A
Question #57 Section 1
Refer to the exhibit. The code and the error message that are received when the code is run is presented.
What causes issues authenticating with Cisco GMM API using the web-generated API key?
A. firewall that blocks authentication ports
B. incorrect username and password
C. incorrect GMM Cluster selection
D. incorrect key size and data encryption
Answer: B
Question #58 Section 1
As part of an IoT project, an organization is developing an edge application that will run on a gateway to securely transmit sensor information it receives into an
IoT cloud. Based on the Agile software development lifecycle, the development team is planning to implement a CI/CD pipeline.
Which two methods should be suggested to make the software development lifecycle more secure during the implementation and testing? (Choose two.)
A. Perform automated code reviews prior to deployment.
B. Implement auto-provisioning security inspection for the code.
C. Perform on-going penetration testing on the system.
D. Perform a GAP analysis on current security activities and policies.
E. Train members of the team in a secure software development lifecycle methodology such as OWASP.
Answer: DE
Question #59 Section 1
Which command is used to package a Docker-style Cisco IOx app using ioxclient?
A. ioxclient docker create helloworld:1.0.
B. ioxclient docker-app helloworld:1.0.
C. ioxclient docker package helloworld:1.0.
D. ioxclient docker helloworld:1.0.
Answer: C
/( 48(67,216

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