Free Implementing DevOps Solutions and Practices using Cisco Platforms Exam 300-910 Exam Practice Test

What is an advantage of using configuration management tools to automate infrastructure services?

• eliminates the need to run integration tests within the CI/CD pipeline
• provides high native monitoring of services
• eliminates the need for CI/CD tools
• integrates with container orchestration

A DevOps engineer has built a container to host a web-server and it must run as an executable. Which command must be configured in a Dockerfile to accomplish this goal?

• ENTRYPOINT
• ENTRYPOINT [''/usr/sbin/apache2ctl'', ''-D'', ''FOREGROUND'']
• ENTRYPOINT [''BACKGROUND'', ''-D'', ''/usr/sbin/apache2ctl'']
• ENTRYPOINT {usr/sbin/apache2ctl}

A company has a CI/CD pipeline implemented to automate application deployment. An urgent change is required in the production environment. A developer produces and tests the required change in the company's environment, but the pipeline fails when pushed.Which action conforms to the rules of a CI/CD pipeline and enables the pipeline to pass?

• Remove the failing test.
• Manually deploy the change into the production environment
• Use a backup pipeline
• Replicate the production environment in the pipeline before applying

How long analysis systems such as Elasticsearch, Logstash, and Kibana Stack handle ingesting unstructured logs from different devices in various formats?

• All devices that generate syslogs must use agents that process the local logs and transmit them in a specific format to the ELK Stack.
• All logs are stored in their unstructured text format, and the ELK Stack performs data analysis by intelligently parsing the logs using machine learning algorithms.
• All different message formats are parsed separately using custom filters, and the resulting structured data is stored for later analysis.
• A single, comprehensive log format is defined on the ELK Stack. All incoming logs, regardless of format, are transformed to match the comprehensive format, and only applicable fields are populated.

A DevOps engineer has built a new container and must open port 8080 for intercontainer communication. Which command must be added in a Dockerfile to accomplish this goal?

• EXPOSE 8080
• FIREWALL ADD-PORT 8080
• PORT 8080
• OPEN PORT 8080

A new banking application is being developed as the main currency exchange resource for all the customers on a global scale. The application must comply with the security based on the deployed region. Therefore, the CI/CD pipeline must be created with the highest security possible.Which approach accomplishes this goal?

• Give the accounts used in the CI/CD pipeline full administrative rights to all applications
• Use the same passwords across the entire CI/CD pipeline
• Ensure that secrets are not inadvertently passed on during builds for pull requests via CI/CD pipeline
• Never use one-time passwords in CI/CD pipeline

A company has experienced serious growth and the hosted applications are getting more and more hits. Based on the increased work load, applications have started to show signs of reduced performance, which is affecting the user experience.Which two server metrics should be tracked to ensure that the customer experience remains within acceptable limits? (Choose two.)

• application feature sprawl
• CPU peak usage
• CPU average usage
• microservices count
• CPU frequency

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?

• Grafana has lost connectivity to Prometheus, which causes graphs to display only the cached data.
• CPU and memory metrics from Kubernetes nodes are not accurate due to the way that containers share resources.
• Some containers are crashing regularly and being restarted automatically by Kubernetes.
• The metricbeat agent has crashed and is no longer sending new data to Prometheus, so the metrics are not updating.

An end user is seeing long web page load times on the internal business application that they are trying to view. The user is seeing this issue across multiple web browsers, and other users encounter the same issue. Which action should the system administrator take to start looking for the cause of this issue?

• Check to make sure Nginx is running.
• Check for response times in Nginx logs.
• Check to make sure the web API response is coming back in JSON.
• Check the size of the database that the application is using.

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

• service
• pod
• deployment
• loadbalancer