CV0-004 Deployment Practice Test 7 — 15 Questions

Question 1

A DevOps engineer is configuring a Kubernetes deployment for a microservices application. The application requires that new pods receive traffic only after a health check endpoint returns HTTP 200. Which Kubernetes feature should be configured on the pods?

Accepted Answer

Readiness probe. Readiness probes determine whether a pod is ready to receive traffic; only when the probe succeeds is the pod added to service endpoints.

Answer

Startup probe

Answer

Liveness probe

Answer

Resource limits

Question 2

A company needs to migrate 50 TB of data from an on-premises file server to Amazon S3. The network bandwidth is limited and the migration must be completed within one week. Which AWS service is specifically designed for offline data transfer of large datasets?

Accepted Answer

AWS Snowball. AWS Snowball is specifically designed for offline data transfer of large datasets, such as 50 TB, when network bandwidth is limited. It provides physical storage devices that are shipped to the customer, loaded with data, and returned to AWS for ingestion into S3, bypassing network constraints entirely. This makes it the ideal choice for completing a 50 TB migration within one week over a limited bandwidth connection.

Answer

AWS DataSync

Answer

Amazon S3 Batch Operations

Answer

S3 Transfer Acceleration

Question 3

An Azure administrator needs to deploy a cloud-native application using Azure DevOps. The team wants to define the entire Azure infrastructure as code using a declarative language that is concise and integrated with Azure. Which tool should the administrator use?

Accepted Answer

Bicep. Bicep is a domain-specific language for deploying Azure resources that provides a simpler syntax than ARM templates while being fully integrated with Azure.

Answer

Terraform

Answer

Ansible

Answer

ARM templates (JSON)

Question 4

A cloud engineer is using Ansible to automate the configuration of cloud resources. The engineer needs to ensure that the automation does not require any agent software to be installed on the target nodes. Which characteristic of Ansible makes this possible?

Accepted Answer

It is agentless. Ansible is agentless; it connects over SSH (Linux) or WinRM (Windows) to execute tasks without installing any software on the target.

Answer

It uses PowerShell Desired State Configuration

Answer

It uses a master-agent architecture

Answer

It requires a pull-based model

Question 5

An organization is migrating a MySQL database to Amazon Aurora with minimal downtime. The migration must capture ongoing changes from the source database and apply them to the target during the cutover. Which AWS Database Migration Service (DMS) feature should be used?

Accepted Answer

Change data capture (CDC). AWS DMS supports ongoing replication using change data capture (CDC), which continuously replicates changes from the source to the target with minimal downtime.

Answer

Validation

Answer

Full load only

Answer

Schema conversion

Question 6

A developer is deploying a serverless function that processes images uploaded to an S3 bucket. The function should be triggered automatically whenever a new object is created in the bucket. Which event source should be configured to invoke the Lambda function?

Accepted Answer

Amazon S3. S3 can send events to Lambda when objects are created, enabling automatic processing without polling.

Answer

Amazon SQS

Answer

Amazon EventBridge

Answer

API Gateway

Question 7

A company is adopting a CI/CD pipeline using Jenkins to deploy a web application. The pipeline must include steps to compile code, run unit tests, package the application, deploy to a test environment, and then deploy to production. Which pipeline stage should be configured immediately after the build stage?

Accepted Answer

Test. In a typical CI/CD pipeline, after build (compile) comes test (e.g., unit tests) to validate the code before proceeding to deploy.

Answer

Verify

Answer

Deploy to production

Answer

Source

Question 8

A cloud architect is designing a multi-account AWS environment and wants to deploy CloudFormation stacks consistently across many accounts. The architect needs a solution that can manage stack instances across multiple accounts and Regions from a single administrator account. Which AWS feature should be used?

Accepted Answer

Stack sets. AWS CloudFormation StackSets allow you to create, update, or delete stacks across multiple accounts and Regions from a single admin account.

Answer

Drift detection

Answer

Nested stacks

Answer

Change sets

Question 9

A DevOps team wants to deploy a Kubernetes application using a package manager that simplifies the deployment process by bundling all Kubernetes resources into a single package. Which tool should the team use?

Accepted Answer

Helm. Helm is the package manager for Kubernetes that uses charts to define, install, and upgrade even the most complex Kubernetes applications.

Answer

Kustomize

Answer

Ansible

Answer

Terraform

Question 10

A cloud engineer is planning a database migration from an on-premises Oracle database to Amazon RDS for PostgreSQL. The migration must minimize downtime and preserve ongoing changes. Which TWO services should the engineer consider using together? (Choose two.)

Accepted Answer

AWS Database Migration Service (DMS). AWS DMS can migrate data and replicate ongoing changes using CDC, while the Schema Conversion Tool can convert the Oracle schema to PostgreSQL.

Answer

AWS DataSync

Answer

AWS Snowball

Answer

Amazon S3 Transfer Acceleration

Question 11

An organization is implementing a canary deployment strategy for a microservice running on Kubernetes. The deployment should automatically roll back if the error rate exceeds 2% within the first 5 minutes. Which THREE components are essential for implementing this strategy? (Choose three.)

Accepted Answer

Service mesh (e.g., Istio, Linkerd). To implement canary with automatic rollback, you need a traffic split mechanism (service mesh), monitoring (Prometheus), and progressive delivery tool (Flagger).

Answer

Horizontal Pod Autoscaler

Answer

Kubernetes Service with label selectors

Question 12

A company is migrating 100 TB of data from on-premises to Google Cloud Storage. The network bandwidth is 1 Gbps, and the migration window is two weeks. Which TWO services should the company consider to complete the transfer within the window? (Choose two.)

Accepted Answer

Transfer Appliance. Storage Transfer Service handles online transfers from various sources, and Transfer Appliance provides offline physical shipping for large datasets when network is insufficient.

Answer

gsutil

Answer

Cloud Dataflow

Answer

Cloud VPN

Question 13

A cloud engineer is tasked with deploying a containerized application on Kubernetes. The application must handle varying loads, and the deployment should automatically replace failed containers. Which Kubernetes object should the engineer use to achieve self-healing and scalability?

Accepted Answer

Deployment. A Deployment is the correct Kubernetes object because it manages ReplicaSets to provide declarative updates, self-healing (automatic replacement of failed pods), and scalability (adjusting replica counts). Unlike a standalone Pod, a Deployment ensures the desired state is maintained, automatically rescheduling containers if they fail.

Answer

ConfigMap

Answer

Service

Answer

Pod

Question 14

A company is migrating a 50 TB on-premises database to AWS RDS with minimal downtime. They plan to use AWS DMS with ongoing change data capture (CDC). Which additional AWS service should be used to handle the initial full load efficiently before enabling CDC replication?

Accepted Answer

AWS Snowball Edge. AWS DMS can use Snowball Edge for large initial loads to avoid lengthy network transfers. S3 Transfer Acceleration speeds up uploads but is not optimal for 50 TB initial load. Database Migration Service is the tool itself. DataSync is for file storage, not databases.

Answer

Amazon S3 Transfer Acceleration

Answer

AWS DataSync

Answer

AWS Database Migration Service (DMS)

Question 15

A DevOps team uses Terraform to manage cloud infrastructure. They want to store the state file in a remote backend to enable team collaboration. Which backend configuration stores Terraform state in an S3 bucket?

Accepted Answer

backend 's3'. Option C is correct because Terraform's 's3' backend is specifically designed to store state files in an AWS S3 bucket, enabling team collaboration through remote state locking and versioning. This backend uses the AWS SDK to interact with S3, supporting features like DynamoDB-based state locking and encryption with KMS.

Answer

backend 'consul'

Answer

backend 'azurerm'

Answer

backend 'gcs'