Cisco 300-915 Exam Questions

Question 6 of 58

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.

Correct Answer: A

Question 7 of 58

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

PLCs are always part of Level 0 "" process control.

PLCs are part of Level 4 "" site business planning.

PLCs are part of Level 1 "" basic control.

PLCs are placed at Level 2 "" area supervisory control.

Correct Answer: C

Question 8 of 58

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?

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.

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.

1. Acquire sensor data. 2. Filter non-actionable data. 3. Perform action on data.

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 9 of 58

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.)

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

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

It compiles a "hello world" program in C.

It creates two separate images.

It builds an IOx package that can be deployed directly.

Correct Answer: B, C

Question 10 of 58

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.)

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

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

Serial cable length should not exceed 1.5 meters.

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

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

Correct Answer: D, E