無料で使える300-910サンプル問題で100%カバー率のリアル試験問題（更新された130問あります)
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質問 # 31
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 same playbook again with the debug option enabled and use grep on the log output to ensure that the commands are not applied again.
- B. 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.
- C. Add a step to ping a host on each of the static routes before the change, and a step after to repeat the same check. Calculate the difference between the two checks for review.
- D. Add a step to capture the routing table before the change, and add a step after the change to capture it again. Calculate the difference between the two for review.
正解：D
質問 # 32
An application for storing and categorizing has been developed. The application uses dual-factor authentication for user access. After authentication, users can upload sensitive data. The application has been hacked through system exploits and most of the saved data has been lost.
Which action prevents new security threats in the environment?
- A. Install virtual firewalls
- B. Actively change the ISP provider
- C. Use self-developed algorithms for encryption
- D. Apply all the latest patches and updates
正解：D
質問 # 33
A team is developing an application for end users. The application will use microservices. For user access, dual-factor authentication will be used. Which type of test must be performed by the CI/CD tool to replicate user behavior and to verity that various user actions work as expected?
- A. End-to-end
- B. Unit
- C. sanity
- D. A/B
正解：B
質問 # 34
Which type of security testing should be performed as a part of a CI/CD pipeline by analyzing the source code itself without compiling the code into a running executable?
- A. Static Analysis Security Testing
- B. Dynamic Application Security Testing
- C. Runtime Application Health-Protection
- D. Continuous Application Security Testing
正解：A
質問 # 35
What is the purpose of using a build tool in software development?
- A. It is a manual process that is followed to build software.
- B. It provides a way to edit source code using a graphical interface.
- C. It tracks bugs and incidents in a built application.
- D. It complies source code into binaries and executables.
正解：D
質問 # 36
An interface on a router as a Layer 3 link has been configured to another device by updating an Ansible playbook that is executed via a CI/CD pipeline. The Ansible playbook was written to push the configuration change using the ios_config module. Which automated test validates that the interface is functioning as it should?
- A. Add a pipeline step that captures and parses the show ip interface output so that the operational state can be referenced.
- B. Add a pipeline step that captures and parses the packet flow for the interface.
- C. Add a pipeline step that runs the playbook a second type. If it does not modify the device on the second run, then the interface is correctly configured.
- D. Automated testing is already built in because the playbook execution is successful only after Ansible validates that it applied the change.
正解：D
解説：
Section: Automating Infrastructure
質問 # 37
Refer to the exhibit.
Which CI solution uses this file?
- A. GitLab CI
- B. Drone
- C. Travis CI
- D. Jenkins
正解：B
解説：
Explanation
syntax for GitLab CI, Travis CI & Jenkins are "stage...", while Drone use "steps..." Here are the configuration files I referred https://docs.drone.io/pipeline/environment/syntax/
https://docs.gitlab.com/ee/ci/yaml/includes.html
https://blog.travis-ci.com/2019-05-30-setting-up-a-ci-cd-process-on-github
https://www.jenkins.io/doc/pipeline/examples/
質問 # 38
A team must roll out updates on the production instance of an application. To avoid any service down time, the new version must be released alongside the old version. After the team ensures that the new version operates as it should, traffic will be redirected to the new version. Then the old version will be shut down.
Which deployment strategy must be used?
- A. shadow
- B. canary
- C. rolling
- D. blue/green
正解：D
解説：
Explanation
The new version of the application is deployed to one of the environments, and then traffic is gradually shifted to the updated environment. This strategy allows the team to test the new version before releasing it to the public, ensuring that it is operating as expected. After the new version is tested and approved, traffic is fully shifted to the new environment and the old environment is shut down.
質問 # 39
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. pyATS
- B. Genie CLI
- C. Ansible
- D. Travis CI
正解：D
質問 # 40
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 check
- B. terraform plan
- C. terraform validate
- D. terraform fmt
正解：C
質問 # 41
Which Dockerfile produces an efficient image rebuild when the exposed port Python dependency, or MyApp source code is modified?
A)
B)
C)
D)
- A. Option D
- B. Option B
- C. Option C
- D. Option A
正解：B
質問 # 42
How long analysis systems such as Elasticsearch, Logstash, and Kibana Stack handle ingesting unstructured logs from different devices in various formats?
- A. All devices that generate syslogs must use agents that process the local logs and transmit them in a specific format to the ELK Stack.
- B. 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.
- C. 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.
- D. All different message formats are parsed separately using custom filters, and the resulting structured data is stored for later analysis.
正解：C
質問 # 43
Refer to the exhibit.
The IT team is creating a new design for a logging system. The system must be able to collect logs from different components of the infrastructure using the SNMP protocol. When the data is collected it will need to be presented in a graphical UI to the NOC team.
What is the architectural component that needs to be placed in the unlabeled box to complete this design?
- A. web server
- B. log parser
- C. time-series database
- D. message queue
正解：C
解説：
A log parser is a software component that is used to collect and parse log data from various sources, such as infrastructure devices, applications, and services. It is responsible for collecting log data from the various sources and then mapping it to a specific format that can be easily consumed and interpreted by the NOC team. The log parser can also be used to filter out irrelevant data and store the processed data in a time-series database. This data can then be used by the NOC team to generate visualizations and reports, which will help them identify and address any issues within the infrastructure. (Source: Cisco Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS) Study Manual Chapter 5, Understanding Logging and Log Analysis)
質問 # 44
What is the effective way to manage computing costs in a public cloud?
- A. Make use of elastic services and scale on demand.
- B. Use dedicated hardware for all instances.
- C. Monitor data transfers to minimize cost.
- D. Select the largest instance option available in order to pay for only one instance.
正解：A
質問 # 45 
Refer to the exhibit. What is the reason for this error message?
- A. The requests module is not installed.
- B. The required dependencies for the urllib3 module are not installed.
- C. The site-packages directory has been corrupted.
- D. The required dependencies for the requests module are not installed.
正解：A
解説：
Section: Packaging and Delivery of Applications
質問 # 46
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.
正解：
解説：
Explanation
- The code repository is updated by a user.
- The CI tool is notified of an update.
- Integration test of the most recent configurations is performed
- The configuration changes are pushed to devices.
質問 # 47
An organization is developing an application using Git. Each team member is assigned to work on specific parts of the application. At the end of each task, individual code parts are merged in the main build.
Which two requirements should be implemented to increase the likelihood of continuous integration? (Choose two.)
- A. Changes must be validated during deployment to the production environment
- B. Team members must be responsible for the code committed by any team member
- C. Changes must include automated tests
- D. Smaller, individually testable changes must be merged first
- E. Changes must be scheduled to deploy at a specific time that has minimal traffic
正解：A、C
質問 # 48
What is the impact of using the Drone.io CI/CD tool on the local installation step?
- A. delays the deployment of components
- B. speeds up the procedure
- C. complicates the application process
- D. slows down the development
正解：A
質問 # 49
Refer to the exhibit.
A distributed application contains data services that connect to databases via JDBC and to other remote services via HTTP. The overall response time is too long, and AppDynamics is used to investigate the root cause. From the application flow map, a specific data service running on Docker has been identified whose response time is over 10 seconds.
Which action resolves the issue?
- A. Change from a JDBC call to a HTTP call to retrieve data faster
- B. Verify if the Docker container running MySQL is limiting CPU utilization
- C. Explore the JDBC queries looking for optimization opportunities
- D. Run the AccountProfileMySQL service in Kubernetes
正解：C
質問 # 50
What is the purpose of using sysprep when developing a Microsoft Windows-based golden image process?
- A. prepares a new host to accept a hard drive image built on another machine
- B. installs all the latest security patches and OS updates to the local machine
- C. removes all host-specific information and components from the local machine
- D. writes the local hard drive image to an ISO file that can be deployed to another machine
正解：C
質問 # 51
What is a benefit of monitoring the CI/CD pipeline?
- A. analyzes network outages that affect the network and server infrastructure
- B. troubleshoots distributed systems performance
- C. proactively deploys new servers if needed
- D. provides insight into how efficiently the development team is operating
正解：D
質問 # 52
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. pyATS
- B. Genie CLI
- C. Ansible
- D. Travis CI
正解：D
解説：
Section: CI/CD Pipeline
質問 # 53
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