Cisco Cisco Certifications 300-915 Questions & Answers

• Question 41:

  

  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?

  A. paas

  B. docker-vm

  C. docker

  D. docker-app

  Correct Answer: C

• Question 42:

  How does the Cisco router (IR) and switch (IE) portfolio support edge data services?

  A. Edge data services can be run and managed as containers using Cisco IOx.

  B. Edge data services can run only in virtual machines on a separate compute layer.

  C. Edge data services are aliases for IR/IE configuration services.

  D. Edge data services run as separate instances only on virtual machines.

  Correct Answer: C

• Question 43:

  

  Refer to the exhibit. Which two statements about MQTT messaging are true? (Choose two.)

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

  B. Redundant ClientIDs are supported by MQTT brokers.

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

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

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

  Correct Answer: DE

• Question 44:

  When an RS232 device is connected to a Cisco IR829 router, the data collected is not being parsed correctly by the edge application.

  Which two steps should be taken to troubleshoot the issue? (Choose two.)

  A. SSH access on the Cisco IR829 router must be enabled for IOx Guest OS.

  B. Communication mode must be set to half duplex over serial connection.

  C. Serial cable length should not exceed 1.5 meters.

  D. Ensure that communication parameters like baud rate and parity are set correctly.

  E. Set the cable connections based on the PIN layout from the sensor vendor.

  Correct Answer: DE

• Question 45:

  

  Refer to the exhibit. When a Docker image is built using this Dockerfile, which two statements are valid on Cisco IOx 1.8 and before? (Choose two.)

  A. It builds an image that can be executed on all Cisco platforms.

  B. It builds a Docker image that cannot be used directly on Cisco IOx.

  C. It compiles a "hello world" program in C.

  D. It creates two separate images.

  E. It builds an IOx package that can be deployed directly.

  Correct Answer: BC

• Question 46:

  A sensor reads potentially critical data from an industrial device, but most of the data from the sensor is not critical information and does not change unless a critical event happens.

  Which data work flow is appropriate for how the critical and non-critical data is processed?

  A. 1. Acquire sensor data.

  2.

  Filter non-actionable data.

  3.

  Perform action on data.

  4.

  Send critical data and action performed on data to cloud for storing.

  B. 1. Acquire sensor data.

  2.

  Send data to cloud for processing and to determine action.

  3.

  Send required action back to edge for action completion.

  4.

  Perform action on data.

  C. 1. Acquire sensor data.

  2.

  Filter non-actionable data.

  3.

  Perform action on data.

  D. 1. Acquire sensor data.

  2.

  Perform action on data.

  3.

  Send data and action performed on data to cloud for recording.

  Correct Answer: D

• Question 47:

  Which statement explains the correct position of a PLC within the CPwE architecture?

  A. PLCs are always part of Level 0 ?process control.

  B. PLCs are part of Level 4 ?site business planning.

  C. PLCs are part of Level 1 ?basic control.

  D. PLCs are placed at Level 2 ?area supervisory control.

  Correct Answer: C

• Question 48:

  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?

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

  B. 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.

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

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

  Correct Answer: A

• Question 49:

  When constructing a Python script for data extraction using GMM APIs on a Cisco Kinetic Cloud platform, how should the API authentication be implemented?

  A. Generate the API keys once and edit the permissions as needed.

  B. Generate and use the API keys for the required access level from the Kinetic Cloud application.

  C. Use a complex username and password with 128-bit encryption.

  D. Use a complex username with an auto-generated password from the Kinetic Cloud application.

  Correct Answer: B

• Question 50:

  Which two states are applications expected to be seen in when they are managed on Cisco IOx? (Choose two.)

  A. DEACTIVATED

  B. ACTIVATED

  C. ALLOWED

  D. STOPPED

  E. VALIDATED

  Correct Answer: BD