Cisco Cisco Certified DevNet Professional 300-910 Questions & Answers

• Question 91:

  A DevOps engineer is supporting a containerized application with multiple components running across the Kubernetes cluster. Metrics from the container (CPU and memory) and application (requests per second and heap size) are being collected by Prometheus and displayed with Grafana. Users report transaction timeout problems with the application, but the metric graphs all look within normal levels.

  Which type of failure would prevent the engineer from seeing the problem using the captured metrics?

  A. Grafana has lost connectivity to Prometheus, which causes graphs to display only the cached data.

  B. CPU and memory metrics from Kubernetes nodes are not accurate due to the way that containers share resources.

  C. Some containers are crashing regularly and being restarted automatically by Kubernetes.

  D. The metricbeat agent has crashed and is no longer sending new data to Prometheus, so the metrics are not updating.

  Correct Answer: D

• Question 92:

  Which Kubernetes object is used to create a ClusterIP or NodePort?

  A. service

  B. pod

  C. deployment

  D. loadbalancer

  Correct Answer: A

• Question 93:

  A developer wants to deploy a highly available web server cluster and decides to put a load balancer in front of multiple clustered nodes that run the same web service. The goal is for the load balancer to take in users and distribute the load across the whole cluster.

  What kind of high-availability configuration is the developer running?

  A. active

  B. passive

  C. active-passive

  D. active-active

  Correct Answer: D

  An active-active high-availability configuration is when the load balancer is used to distribute the load across the whole cluster of nodes that are running the same web service. In this configuration, all of the nodes are active and available to serve requests at any given time. This is in contrast to an active-passive configuration, where only one node is active and the other nodes are passive and serve as backups in case of a failure.

• Question 94:

  A user wants to deploy a new service to a Kubernetes cluster. Which two commands accomplish this goal? (Choose two.)

  A. Apply

  B. Install

  C. Deploy

  D. Create

  E. Expose

  Correct Answer: AE

• Question 95:

  DRAG DROP

  The IaC configuration for an application is being deployed using a CI/CD pipeline. Drag and drop the steps for this pipeline from the left into the correct order that they would be executed on the right. Not all options are used.

  Select and Place:

  

  Correct Answer:

  

• Question 96:

  DRAG DROP

  Drag and drop the operations from the left into the correct order on the right when using CI/CD, assuming that there are no failures or conflicts.

  Select and Place:

  

  Correct Answer:

  

• Question 97:

  DRAG DROP

  Construct an Ansible script to gather information about target routers and then use it to apply no ip redirects to every interface on each device. Drag and drop the code from the bottom onto the correct location in the exhibit to complete the tasks section of the Ansible playbook so that it accomplishes your goal.

  Select and Place:

  

  Correct Answer:

  

• Question 98:

  DRAG DROP

  Drag and drop the commands from the bottom onto the correct Terraform code in the exhibit to push a network object to a Cisco ASA Firewall device.

  Select and Place:

  

  Correct Answer:

  

• Question 99:

  DRAG DROP

  An application is being built to collect and display telemetry streaming data. Drag and drop the elements of this stack from the left onto the correct functions on the right.

  Select and Place:

  

  Correct Answer:

  

• Question 100:

  FILL BLANK

  Fill in the blanks to complete the line of Python code that sends a message to a Webex Teams room or person.

  

  Correct Answer: post, messages