Question 1

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}

Accepted Answer

ENTRYPOINT ["/usr/sbin/apache2ctl", "-D", "FOREGROUND"]This command sets the entry point for the container to be the Apache web server, and it also specifies that the server should run in the foreground. This will cause the server to start when the container starts, and it will continue to run until the container is stopped.

Question 2

Which two characteristics of a build tool that is used in an automated build pipeline? (Choose two.)
A) It runs unit tests against code that is committed.
B) It builds your software on the production environment.
C) It builds your software when changes are committed.
D) It builds your software every 500 milliseconds.
E) It must have a plug-in for Puppet and Maven.

Accepted Answer

A build tool in an automated pipeline typically runs unit tests to ensure code quality and builds the software when changes are committed to automate the integration process.

Question 3

Refer to the exhibit. What is causing the requests code to fail?
A) Rython3 is not compatible with requests.
B) The requests library is not imported.
C) The requests library is not installed.
D) The requests coming into stdin fail because device_ip cannot be parsed.

Accepted Answer

B

Question 4

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?
A) EXPOSE 8080
B) FIREWALL ADD-PORT 8080
C) PORT 8080
D) OPEN PORT 8080

Accepted Answer

The EXPOSE instruction in a Dockerfile is used to inform Docker that the container listens on the specified network ports at runtime.

Question 5

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

Accepted Answer

This is an example of a canary deployment, where a new version is gradually rolled out to a small subset of users to test its stability before a full release.

Question 6

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']

Accepted Answer

The answer of  Refer to the exhibit. The exhibit...

Question 7

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

Accepted Answer

The answer of  Refer to the exhibit. A developer...

Question 8

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

Accepted Answer

Travis CI is a hosted continuous integration service used to build and test software projects hosted on GitHub and Bitbucket. It is suitable for both open and private projects, making it a good choice for implementing a CI/CD pipeline.

Question 9

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. 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 again. Calculate the difference between the two for review.
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 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. 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.

Accepted Answer

Capturing the routing table before and after the change allows you to directly compare the differences and verify that the static routes have been added correctly, ensuring the intended effect on traffic flow.

Question 10

Which Kubernetes object is used to create a ClusterIP or NodePort?
A) service
B) pod
C) deployment
D) loadbalancer

Accepted Answer

A Kubernetes Service is used to create a ClusterIP or NodePort, which are types of services that expose applications running on a set of Pods.

Question 11

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

Accepted Answer

The answer of A CI/CD pipeline that builds infrastructure components...

Question 12

Which description of a canary deployment is true?
A) deployment by accident
B) deployment that is rolled back automatically after a configurable amount of minutes
C) deployment relating to data mining development
D) deployment to a limited set of servers or users

Accepted Answer

A canary deployment is a strategy that involves rolling out a new version of an application to a small subset of users or servers to test its performance and stability before a full-scale release.

Question 13

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.

Accepted Answer

The answer of A DevOps engineer is supporting a containerized...

Question 14

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.

Accepted Answer

Elastic services allow you to scale your infrastructure up or down on demand, which can help you save money by only paying for the resources you need.

Question 15

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

Accepted Answer

CPU peak usage and CPU average usage are important metrics to track to ensure that the customer experience remains within acceptable limits. CPU peak usage indicates the maximum amount of CPU resources that are being used, while CPU average usage indicates the average amount of CPU resources that are being used over a period of time. By tracking these metrics, the company can identify when the CPU is being overutilized and take steps to address the issue.

Question 16

Which type of testing should be integrated into a CI/CD pipeline to ensure the correct behavior of all of the modules in the source code that were developed using TDD?
A) soak testing
B) unit testing
C) load testing
D) volume testing

Accepted Answer

Unit testing is essential in a CI/CD pipeline, especially when using Test-Driven Development (TDD), as it ensures that individual modules or components of the source code behave correctly.

Question 17

A DevOps engineer must validate the working state of the network before implementing a CI/CD pipeline model. Which configuration management tool is designed to accomplish this?
A) Jenkins
B) Genie CLI
C) Travis CI
D) Python YAML data libraries

Accepted Answer

The answer of A DevOps engineer must validate the working...

Question 18

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

Accepted Answer

The answer of A user wants to deploy a new...

Question 19

Which two actions help limit the attack surface of your Docker container? (Choose two.)
A) Run only a single service in each container.
B) Run all services in a single image.
C) Use version tags for base images and dependencies.
D) Use Kali Linux as a base image.
E) Download images over HTTPS supporting sites.

Accepted Answer

The answer of Which two actions help limit the attack...

Question 20

What is the purpose of using a build tool in software development?
A) It complies source code into binaries and executables.
B) It provides a way to edit source code using a graphical interface.
C) It is a manual process that is followed to build software.
D) It tracks bugs and incidents in a built application.

Accepted Answer

Build tools automate the process of converting source code into binaries and executables, managing dependencies, and packaging the software for deployment.

Exam 34: Developing Solutions Using Cisco IoT and Edge Platforms (DEVIOT)

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?

Which two characteristics of a build tool that is used in an automated build pipeline? (Choose two.)

Refer to the exhibit. What is causing the requests code to fail?

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?

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?

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?

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 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?

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?

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

Which description of a canary deployment is true?

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

Which type of testing should be integrated into a CI/CD pipeline to ensure the correct behavior of all of the modules in the source code that were developed using TDD?

A DevOps engineer must validate the working state of the network before implementing a CI/CD pipeline model. Which configuration management tool is designed to accomplish this?

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

Which two actions help limit the attack surface of your Docker container? (Choose two.)

What is the purpose of using a build tool in software development?