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300-910 Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS) Questions and Answers

Questions 4

Refer to the exhibit.

The push_configs.yml playbook returns the error shown.

Which action resolves the error?

Options:

A.

Install the Paramiko library on the host that runs Ansible

B.

Generate a new SSH key pair and add the public key to the target machine

C.

Export the ANSIBLE_HOST_KEY_CHECKING=False variable

D.

Comment out the StrictHostKeyChecking=yes line from ansible.cfg

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Questions 5

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.)

Options:

A.

Changes must be scheduled to deploy at a specific time that has minimal traffic

B.

Changes must include automated tests

C.

Changes must be validated during deployment to the production environment

D.

Smaller, individually testable changes must be merged first

E.

Team members must be responsible for the code committed by any team member

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Questions 6

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?

Options:

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

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Questions 7

What are two benefits of Infrastructure as Code? (Choose two.)

Options:

A.

It enables continuous integration.

B.

It allows for management control.

C.

It ensures consistency.

D.

It improves application monitoring.

E.

It reduces risk.

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Questions 8

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?

Options:

A.

EXPOSE 8080

B.

FIREWALL ADD-PORT 8080

C.

PORT 8080

D.

OPEN PORT 8080

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Questions 9

To make logging searches more efficient and useful in Kibana, an Administrator wants to implement index patterns around the hostname of some software systems. Where should this be configured?

Options:

A.

Configure a new JSON object in Kibana.

B.

Create a search index in Logstash.

C.

Create an index pattern in Kibana.

D.

Create a time filter on Kibana to look at time only.

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Questions 10

Drag and drop the code snippets from the bottom onto the boxes in the code to complete the docker-compose y ml and the mdex.js files to enable network communication between the containers of a Redis instance and a Node js web application The application must be reachable on the host via port 4001 Not all options are used

Options:

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Questions 11

An IT team plans to deploy a new service built on top of an existing service. The capacity needed for the new service is difficult to estimate because the demand for the new service is undetermined. The team has these deployment requirements:

• A subset of the users of the original service must be migrated to the new service based on their profile

• The new service must be rolled back easily if capacity exceeds estimates

Which deployment strategy must be used?

Options:

A.

rolling

B.

blue/green

C.

geolocation

D.

canary

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Questions 12

When DevOps practices are integrated into an existing organization, which two characteristics are positive indicators of DevOps maturity? (Choose two.)

Options:

A.

mean time between success

B.

mean time to recover

C.

cone testing

D.

change lead time

E.

age of codebase

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Questions 13

What are two reasons a Docker golden image should be updated? (Choose two.)

Options:

A.

when there is a change to a username or password in the Docker secrets

B.

when the application has a new release

C.

when a fix for a security vulnerability is released

D.

when a change is needed to an environment variable in the Dockerfile

E.

when the base image is nearing the end of life

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Questions 14

Drag and drop the tools from the left onto the tools function on the right Not all options are used.

Options:

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Questions 15

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?

Options:

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’]

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Questions 16

Refer to the exhibit A DevOps engineer must deploy two microservices The deployment must be installed in a new Kubernetes cluster. The microservices currently run in Docker and are managed by using the provided docker-compose yml file Drag and drop the steps from the left into order on the right to successfully deploy the microservices

Options:

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Questions 17

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?

Options:

A.

terraform plan

B.

terraform check

C.

terraform fmt

D.

terraform validate

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Questions 18

An application communicates with multiple third-party services that use API keys When stress testing the system, developers must change the URLs of the third-party services The application must run on port 5000. but the developers must be able to change the port at runtime if required Which configuration management approach simplifies the development workflow and reduces the configuration changes?

Options:

A.

secrets

B.

sane defaults

C.

application parameters

D.

config maps

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Questions 19

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?

Options:

A.

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.

B.

Automated testing is already built in because the playbook execution is successful only after Ansible validates that it applied the change.

C.

Add a pipeline step that captures and parses the packet flow for the interface.

D.

Add a pipeline step that captures and parses the show ip interface output so that the operational state can be referenced.

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Questions 20

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?

Options:

A.

recreate

B.

blue/green

C.

rolling

D.

canary

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Questions 21

What is a benefit of monitoring the CI/CD pipeline?

Options:

A.

troubleshoots distributed systems performance

B.

proactively deploys new servers if needed

C.

analyzes network outages that affect the network and server infrastructure

D.

provides insight into how efficiently the development team is operating

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Questions 22

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?

Options:

A.

ENTRYPOINT

B.

ENTRYPOINT [“/usr/sbin/apache2ctl”, “-D”, “FOREGROUND”]

C.

ENTRYPOINT [“BACKGROUND”, “-D”, “/usr/sbin/apache2ctl”]

D.

ENTRYPOINT {usr/sbin/apache2ctl}

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Questions 23

Fill in the blanks to complete the line of Python code that sends a message to a Webex Teams room or person.

Options:

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Questions 24

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

Options:

A.

eliminates the need to run integration tests within the CI/CD pipeline

B.

provides high native monitoring of services

C.

eliminates the need for CI/CD tools

D.

integrates with container orchestration

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Questions 25

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?

Options:

A.

ReplicaSet

B.

PriorityClass

C.

Deployment

D.

Pod

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Questions 26

Drag and drop the commands from the bottom onto the correct Terraform code in the exhibit to push a network object to a Cisco ASA Firewall device.

Options:

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Questions 27

What is included in ansible playbook instructions?

Options:

A.

component dependencies

B.

end state of component

C.

machine dependencies

D.

beginning state of component

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Questions 28

Drag and drop the code from the bottom onto the box where the code is missing to create a Terraform configuration that builds the network environment for a multitier software application. More EPG, Contract, and Filter definitions have been removed from the code.

Options:

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Questions 29

An IT department needs to deploy a new application named ‘Entfin434772390’ across the entire enterprise. The deployment must gradually transfer user traffic from an on older and nearly identical version of the application named ‘Entfin02754932l’. Both versions of the application are running in the production environment.

Which release strategy should be used by the IT department?

Options:

A.

agile

B.

canary

C.

rollbacks

D.

blue/green

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Questions 30

Refer to the exhibit.

A developer is creating a script to test APIs. The Cisco Webex API and a CI/CD pipeline are tested to ensure that the script runs without problems. The script is executed without issues locally, but the CI/CD system returns the error shown. What is the problem with the script?

Options:

A.

The CI/CD system is configured incorrectly to import the dependencies to the code

B.

The code is pushed incorrectly to the CI/CD system

C.

The version of Python is wrong in the CI/CD pipeline

D.

The CI/CD system is configured incorrectly to download the required dependencies

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Questions 31

A DevOps engineer is designing a precheck validation of the network state in a CI/CD pipeline and must implement this workflow:

• Take a source Docker image named alpine

• Define two stages named build and push

• Check network connectivity before the stages run

• Fetch the latest Docker image

• Create a new Docker image and push it to the registry

• Tag the new Docker image as the latest version

Drag and drop the code snippets from the bottom onto the boxes in the GitLab CI configuration to achieve the requirements for the design. Not all options are used.

Options:

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Questions 32

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?

Options:

A.

Change from a JDBC call to a HTTP call to retrieve data faster

B.

Run the AccountProfileMySQL service in Kubernetes

C.

Explore the JDBC queries looking for optimization opportunities

D.

Verify if the Docker container running MySQL is limiting CPU utilization

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Questions 33

What is a benefit of Infrastructure as Code for the cloud?

Options:

A.

It groups system downtime across the infrastructure

B.

It enables the user to automate deployments

C.

It does not require configuration.

D.

It is a cost effective solution for services

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Questions 34

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

Options:

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.

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Questions 35

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?

Options:

A.

message queue

B.

web server

C.

log parser

D.

time-series database

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Questions 36

Drag and drop the code snippets from the bottom onto the boxes in the code in the Ansible playbook to restart multiple services in the correct sequence Not all options are used

Options:

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Questions 37

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.

Options:

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Questions 38

An IT team at a SaaS company has this Cl/CD pipeline

  • Developers push code to the central repository by using Git.
  • The code is packaged and sent by an automated process to the staging environment where the tests are executed again automatically
  • If the automated tests pass in staging the code is pushed to production

Which change improves the Cl/CD pipeline?

Options:

A.

QA must also run the tests manually in the staging environment

B.

Operations must test in another environment before production

C.

Run unit tests before build and stage testing

D.

The developers run the unit tests manually instead of the QA team

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Questions 39

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?

Options:

A.

kubectl get pods -o wide -w

B.

kubectl rollout status deployment

C.

kubectl describe pods/

D.

kubectl rollout history deployment

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Exam Code: 300-910
Exam Name: Implementing DevOps Solutions and Practices using Cisco Platforms (DEVOPS)
Last Update: May 6, 2024
Questions: 114

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