How Many Questions Of 300-910 Study Guide

NEW QUESTION 1
ConfigMap keys have been mapped to different file names using the volumes.configMap.items field. What is the result if a wrong ConfigMap key is specified?

• A. The default path is not used.
• B. The volume is not created.
• C. The volume is created.
• D. The volume is created with errors.

Answer: A

NEW QUESTION 2
A new version of an application is being released by creating a separate instance of the application that is running the new code. Only a small portion of the user base will be directed to the new instance until that version has been proven stable. Which deployment strategy is this example of?

• A. recreate
• B. blue/green
• C. rolling
• D. canary

Answer: D

NEW QUESTION 3
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?

• A. ENTRYPOINT <usr/sbin/apache2ctl>
• B. ENTRYPOINT [“/usr/sbin/apache2ctl”, “-D”, “FOREGROUND”]
• C. ENTRYPOINT [“BACKGROUND”, “-D”, “/usr/sbin/apache2ctl”]
• D. ENTRYPOINT {usr/sbin/apache2ctl}

Answer: B

NEW QUESTION 4
A DevOps engineering wants to build an application implementation based on the CI/CD pipeline model. Which service should be used to provide hosted continuous service for open and private projects?

• A. Ansible
• B. pyATS
• C. Genie CLI
• D. Travis CI

Answer: D

NEW QUESTION 5
A CI/CD pipeline that builds infrastructure components using Terraform must be designed. A step in the pipeline is needed that checks for errors in any of the .tf files in the working directory. It also checks the existing state of the defined infrastructure.
Which command does the pipeline run to accomplish this goal?

• A. terraform plan
• B. terraform check
• C. terraform fmt
• D. terraform validate

Answer: D

NEW QUESTION 6
Microservices architecture pattern has been applied and the system has been architected as a set of services. Each service is deployed as a set of instances for throughput and availability. In which two ways are these services packaged and deployed? (Choose two.)

• A. Service instances must be isolated from one another.
• B. Service must be independently deployable and scalable.
• C. Service are written using the same languages, frameworks, and framework versions.
• D. Service must be dependent, deployable, and scalable.
• E. Service instances do not need to be isolated from one another.

Answer: AB

NEW QUESTION 7
Which Kubernetes object is used to create a ClusterIP or NodePort?

• A. service
• B. pod
• C. deployment
• D. loadbalancer

Answer: A

NEW QUESTION 8
Which two elements help to secure your API keys? (Choose two.)

• A. ramdomness
• B. SHA1
• C. triple AES
• D. rotation
• E. dictionary

Answer: AC

NEW QUESTION 9

Refer to the exhibit. A developer needs to scale the existing pods within the worked nodes. Which object should be edited to achieve this goal?

• A. ReplicaSet
• B. PriorityClass
• C. Deployment
• D. Pod

Answer: A

NEW QUESTION 10
Which interface is most commonly used to integrate logging, monitoring, and alerting applications into your CI/CD pipeline?

• A. AMQP
• B. SNMP
• C. SSH
• D. REST

Answer: C

NEW QUESTION 11
When static routes are added to a router in a network using a CI/CD pipeline, an Ansible playbook is used to make these changes. Which steps must be added to the pipeline to validate that the changes have the intended effect on the traffic flow?

• A. Add a step to run the debug ip routing command before the change, and add a step after the change to issue the no debug ip routing command.
• B. Add a step to capture the routing table before the change, and add a step after the change to capture it agai
• C. Calculate the difference between the two for review.
• D. Add a step to ping a host on each of the static routes before the change, and a step after to repeat the same chec
• E. Calculate the difference between the two checks for review.
• F. Add a step to run the same playbook again with the debug option enabled and use grep on the log output to ensure that the commands are not applied again.

Answer: B

NEW QUESTION 12
What is the effective way to manage computing costs in a public cloud?

• A. Monitor data transfers to minimize cost.
• B. Use dedicated hardware for all instances.
• C. Select the largest instance option available in order to pay for only one instance.
• D. Make use of elastic services and scale on demand.

Answer: D

NEW QUESTION 13
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.)

• A. application feature sprawl
• B. CPU peak usage
• C. CPU average usage
• D. microservices count
• E. CPU frequency

Answer: BC

NEW QUESTION 14
A developer has created a deployment that should launch a pod to run their database service. The pod should launch with a metadata name of “Cisco-DB," and the developer has added it to the "Cisco" namespace in their deployment.
Which Kubernetes command confirms that the service is running and usable?

• A. kubectl -n Cisco get services | grep “Cisco-DB”
• B. kubectl -n Cisco get pods | grep “Cisco-DB”
• C. kubectl get pods | grep “Cisco-DB”
• D. kubectl -n Cisco get service | grep “Cisco-DB”

Answer: C

NEW QUESTION 15
What is as responsibility for teams running private cloud servers that is less of a concern when running in the public cloud?

• A. cost
• B. metrics and monitoring
• C. hardware maintenance
• D. credentials management

Answer: D

NEW QUESTION 16

Refer to the exhibit. The exhibit shows the output of an Ansible task that prints the contents of the show_ip_int_brief variable that was registered in a different task in the playbook. Which expression is used to print the output of the command without its header row?

• A. show_ip_int_brief[‘stdout_lines’][0]
• B. show_ip_int_brief[‘stdout_lines’][1:]
• C. show_ip_int_brief[‘stdout_lines’][0][1:]
• D. show_ip_int_brief[‘stdout_lines’]

Answer: B

NEW QUESTION 17
Which two practices help make the security of an application a more integral part of the software development lifecycle? (Choose two.)

• A. Add a step to the CI/CD pipeline that runs a dynamic code analysis tool during the pipeline execution.
• B. Add a step to the CI/CD pipeline that runs a static code analysis tool during the pipeline execution.
• C. Use only software modules that are written by the internal team.
• D. Add a step to the CI/CD pipeline to modify the release plan so that updated versions of the software are made available more often.
• E. Ensure that the code repository server has enabled drive encryption and stores the keys on a Trusted Platform Module or Hardware Security Module.

Answer: AE

NEW QUESTION 18
A developer is nearing the end of a software development cycle and is ready to deploy the software. The customer wants to continue using a secure software development lifecycle methodology and must plan for postproduction components. Which two areas should be the developer address? (Choose two.)

• A. performing code reviews
• B. requirement gathering
• C. change management process
• D. new code scanning
• E. rollback plans

Answer: AC

NEW QUESTION 19
Which step must be taken to enable centralized logging in a Kubernetes environment?

• A. No steps need to be take
• B. The master node automatically aggregates logs from all worker nodes and stores them on the specified persistent volume.
• C. Create a CustomResourceDefinition in each deployment that specifies the IP or names the log collector.
• D. Deploy a sidecar node that aggregates logs from the entire cluster.
• E. Create a DaemonSet that deploys a container with a logging agent on every node in the cluster.

Answer: C

NEW QUESTION 20
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