300-910 Online Practice Questions and Answers

FILL BLANK

Fill in the blank to complete the statement.

A user wants a Kubernetes deployment to run three separate pods of a web application at one time. In the deployment YAML, the user must configure the __________ field in the _________ subsection.

FILL BLANK Fill in the blanks to describe the concepts of extending DevOps practices to the network for NetDevOps. NetDevOps builds and manages networks as a system that enables network services to be consumed in a DevOps approach. Organizations practicing NetDevOps see changes in the _________ as routine and expected activities, with a well-

defined and practiced process for _________ , testing, and __________ network changes. By making them routine, network changes can be small and simple.

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.

What are two advantages of using Configuration Management Tools? (Choose two.)

A. reduction in policy violations caused by human errors

B. reduction in administration costs

C. reduction in network changes already performed automatically

D. reduction of on-premises networking equipment

E. reduction in networking team skills

An application has been designed based on microservices. The application is deployed on Kubernetes using multiple pods that share the same IP address. Each pod is responsible for a service in the application.

Which command validates the success of the application deployment?

A. kubectl get pods -o wide -w

B. kubectl rollout status deployment

C. kubectl describe pods/

D. kubectl rollout history deployment

A three-tier web application must be moved to containers. A webserver is already in place, and the middleware container can talk to a central database server. The hostname of the database server is known, but the name of the middleware server must be provided to the webserver.

In which file should the name of the middleware server be configured?

A. Docker Service discovery daemon

B. Docker Swarm

C. Docker Compose

D. Dynamic Host Configuration Protocol

Refer to the exhibit.

The JSON object represents a single entry on a centralized log server, but log data cannot be processed because of the format.

What causes the issue?

A. A hostgroup must be defined

B. The "_type" must represent the process type

C. The priority of the message must be to the server

D. The process name in the message must be parsed into a field

What is a practice of infrastructure as code?

A. Use multiple version control systems

B. Document as much as possible

C. Configure the deployment consistently

D. Test, integrate, and deploy once a day

What is the impact of using the Drone.io CI/CD tool on the local installation step?

A. slows down the development

B. delays the deployment of components

C. speeds up the procedure

D. complicates the application process

Refer to the exhibit.

The text represents a syslog message sent from a Linux server to a centralized log system.

Based on the format of the log message, how must the functionality of the log parser be extended to improve search capabilities?

A. Reverse lookup the IP address to add a hostname field

B. Convert the date to the time zone of the system

C. Configure the Linux machine to add a UID field to messages

D. Filter out the text of the message to speed up searches