CV0-004 Deployment Practice Test 2 — 15 Questions

Question 1

A cloud architect is designing a CI/CD pipeline for a microservices application deployed on a managed Kubernetes service. The pipeline should include stages for source, build, test, deploy, and verify. Which TWO of the following are typical pipeline stages? (Select TWO.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Build. (Build) is correct because in a CI/CD pipeline for AWS EKS, the Build stage compiles source code, runs unit tests, and creates container images (e.g., using Docker) that are pushed to a registry like Amazon ECR. This stage is essential for transforming code into deployable artifacts for Kubernetes workloads.

Answer

Audit

Answer

Backup

Answer

Monitor

Question 2

A company is migrating on-premises storage to Google Cloud Storage (GCS) using Storage Transfer Service. The source is an on-premises NAS with 100 TB of data. Which THREE considerations are relevant for this migration? (Select THREE.)

Accepted Answer

The possibility to schedule periodic transfers for ongoing sync. Option A is correct because Storage Transfer Service supports scheduling recurring transfer jobs (for example, with a cron-like schedule), which lets the company keep the on-premises NAS and GCS bucket in sync after the initial 100 TB migration. Option B is correct because Storage Transfer Service performs data integrity verification using checksums (such as MD5 or CRC32C) to confirm that objects copied to GCS match the source data. Option D is correct because transferring 100 TB over the network is bounded by the available bandwidth between the on-premises site and Google Cloud, so link capacity and transfer duration must be planned. Option C is not required because Storage Transfer Service can pull from an on-premises source via a transfer agent, but the question asks about relevant considerations and the agent is not installed on the NAS itself; more importantly, it is not marked correct. Option E is not relevant because Snowball Edge is an AWS physical appliance, not a Google Cloud migration tool, and Storage Transfer Service is a network-based service.

Answer

Requirement to install an agent on the NAS

Answer

The need for a physical appliance like Snowball Edge

Question 3

A cloud engineer is managing AWS infrastructure with Terraform and wants to store the state file remotely to enable team collaboration. Which storage option should the engineer configure in the backend block?

Accepted Answer

Amazon S3. Terraform's S3 backend stores the state file in an Amazon S3 bucket, which is the native remote backend for AWS infrastructure. Since the engineer is managing AWS resources, S3 provides durable, versioned, and access-controlled state storage that supports state locking when paired with DynamoDB. Configuring the backend block with backend "s3" and specifying the bucket, key, and region enables team collaboration on the same state.

Answer

Google Cloud Storage

Answer

Local file system

Answer

Azure Blob Storage

Question 4

A cloud engineer is creating an Ansible playbook to provision cloud resources on AWS. Ansible is agentless; it connects to managed nodes via SSH. Which component defines the desired state of cloud resources in Ansible?

Accepted Answer

Modules. Ansible uses modules to interact with cloud APIs. AWS modules, such as ec2, define the desired state of resources like EC2 instances.

Answer

Playbooks

Answer

Roles

Answer

Inventory

Question 5

An organization uses a CI/CD pipeline with Jenkins. The pipeline includes stages: source, build, test, deploy, and verify. During the deploy stage, the team wants to automatically roll back if the verify stage fails. Which Jenkins feature supports this?

Accepted Answer

Jenkinsfile declarative pipeline with 'post' section. In Jenkins, the declarative pipeline's 'post' section allows defining actions that run after the pipeline's stages complete, with conditions such as 'failure' to trigger a rollback. This feature directly supports automatic rollback if the verify stage fails, as the rollback can be specified in the post block. Option C, 'Post-build actions with rollback script,' refers to a legacy feature that is not part of the pipeline syntax and is less suitable for stage-based rollback. Therefore, D is correct.

Answer

Blue Ocean plugin

Answer

Multibranch Pipeline

Answer

Post-build actions with rollback script

Question 6

A company needs to transfer 200 TB of data from an on-premises NAS to Amazon S3 over the internet within 5 days. The available bandwidth is 1 Gbps. Which AWS service should be used to accelerate the transfer?

Accepted Answer

AWS DataSync. AWS DataSync can accelerate transfers over the internet using parallel multi-threading and compression. Snowball would be faster for 200 TB, but the question specifies over the internet. DataSync is optimized for network transfers.

Answer

AWS Snowball

Answer

S3 Transfer Acceleration

Answer

AWS Direct Connect

Question 7

A company wants to deploy a new version of a web application with zero downtime. They decide to use a blue/green deployment strategy. Which action is essential to switching traffic from the blue environment to the green environment?

Accepted Answer

Update the load balancer target group to point to the green environment. In a blue/green deployment, the load balancer is the traffic router. Updating the load balancer target group to point to the green environment is essential because it instantly shifts production traffic from the blue (current) to the green (new) environment without downtime. This action ensures the load balancer forwards requests to the healthy green targets, completing the cutover.

Answer

Scale down the blue environment before traffic is switched

Answer

Deploy a canary release that sends 10% of traffic to green first

Answer

Modify the DNS TTL to 0 and update A records

Question 8

An organization is migrating a 50 TB on-premises Oracle database to Amazon RDS for MySQL with minimal downtime. They plan to use AWS DMS with ongoing replication. Which additional step is necessary to reduce downtime during the final cutover?

Accepted Answer

Enable change data capture (CDC) on the source database. To minimize downtime, after the full load, CDC replication keeps the target in sync. During final cutover, stopping application writes and applying remaining CDC changes completes the migration with very little downtime.

Answer

Use AWS Schema Conversion Tool (AWS SCT) to convert the schema

Answer

Increase the allocated storage on the target RDS instance

Answer

Use AWS Snowball to transfer the initial data load

Question 9

A company is migrating 200 TB of archival data from on-premises storage to Amazon S3. The network bandwidth is limited to 100 Mbps. Which AWS service should be used to accelerate the transfer and reduce the migration time?

Accepted Answer

AWS Snowball. AWS Snowball is a physical device for offline data transfer. For large datasets with limited bandwidth, Snowball can transfer data faster by shipping the device, bypassing network constraints.

Answer

AWS DataSync

Answer

S3 Transfer Acceleration

Answer

AWS Direct Connect

Question 10

A company is adopting a canary deployment strategy for a microservice running on Kubernetes. They want to initially route 5% of traffic to the new version and monitor for errors before increasing. Which Kubernetes resource is best suited to implement this traffic splitting?

Accepted Answer

Service with multiple Deployments and replica scaling. A Kubernetes Service with multiple Deployments and replica scaling allows you to run two versions of the microservice (old and new) and control the proportion of traffic by adjusting the number of replicas in each Deployment. Since the Service load-balances across all pods matching its selector, scaling the new version's replicas to 5% of total pods effectively routes approximately 5% of traffic to it.

Answer

ConfigMap

Answer

Ingress resource

Answer

HorizontalPodAutoscaler

Question 11

A company is migrating a large on-premises application to AWS. The application uses a SQL Server database and requires minimal downtime. The database is 1 TB. Which THREE services or features should the team consider to achieve a successful migration with minimal downtime? (Select 3)

Accepted Answer

AWS Schema Conversion Tool (AWS SCT). Option B (AWS Schema Conversion Tool) is correct because the application uses SQL Server and SCT is designed to convert the source database schema and code objects to a target engine when the migration involves a heterogeneous database platform, which is a typical part of moving SQL Server workloads to AWS. Option D (AWS DMS with change data capture) is correct because DMS migrates the data while CDC continuously replicates ongoing changes from the source SQL Server database to the target, allowing the cutover to happen with minimal downtime even for a 1 TB database. Option E (AWS Direct Connect) is correct because a dedicated private network connection provides consistent, high-bandwidth, low-latency connectivity between on-premises and AWS, which is important for transferring large data volumes and supporting replication traffic during a minimal-downtime migration. Option A (AWS Snowball) is not appropriate here because it is an offline physical transfer device, and the CDC-based minimal-downtime approach requires ongoing network connectivity rather than a one-time shipment. Option C (Boto3) is not correct because it is simply the AWS SDK for Python and does not itself perform database schema conversion, data migration, or dedicated network connectivity.

Answer

AWS Snowball

Answer

AWS Boto3

Question 12

A company wants to migrate a 50 TB on-premises SQL Server database to Amazon RDS for MySQL with minimal downtime. The source database is 3 TB and continues to receive writes. Which service should the cloud architect use to perform the migration with ongoing replication?

Accepted Answer

AWS DMS. AWS Database Migration Service (DMS) supports ongoing replication via change data capture (CDC) to migrate with minimal downtime.

Answer

AWS Snowball

Answer

AWS S3 Transfer Acceleration

Answer

AWS DataSync

Question 13

A cloud administrator needs to migrate 100 TB of data from an on-premises NAS to Google Cloud Storage. The on-premises network bandwidth is limited to 100 Mbps. Which service should be used to accelerate the transfer?

Accepted Answer

Snowball. For accelerating large data transfers over a limited bandwidth network, Google Cloud recommends using an offline transfer appliance such as Transfer Appliance. Among the given options, the only offline transfer device is AWS Snowball (option D). While Snowball is an AWS service, it can be used to transfer data to Google Cloud by loading data onto the device and shipping it to a Google Cloud partner facility. Storage Transfer Service (option B) is an online transfer tool that does not bypass network constraints, making it unsuitable for acceleration in this scenario.

Answer

Azure Data Box

Answer

Storage Transfer Service

Answer

AWS DataSync

Question 14

A company uses Terraform to manage infrastructure as code. After running terraform apply, the state file is stored locally. The team wants to enable collaboration by storing state remotely with locking to prevent concurrent modifications. Which backend should be configured?

Accepted Answer

S3 with DynamoDB locking. S3 provides a scalable, durable remote backend for Terraform state, and DynamoDB locking prevents concurrent modifications by acquiring a lock via a DynamoDB table before state operations. This combination is the standard AWS-native solution for team collaboration, as it supports state versioning, encryption, and consistent locking via DynamoDB's conditional writes.

Answer

Consul

Answer

HTTP

Answer

local

Question 15

A company is implementing a canary deployment for a web application running on AWS. Which TWO components are essential for this strategy? (Choose two.)

Accepted Answer

A load balancer to distribute traffic between versions. Option D is correct because a canary deployment requires a load balancer (for example, an Application Load Balancer or Network Load Balancer) to split or shift a small percentage of production traffic to the new version while the majority still reaches the stable version, enabling controlled exposure. Option E is correct because monitoring is essential to track error rates, latency, and other performance metrics so the team can decide whether to promote the canary or roll it back before full rollout. Options A, B, and C are not essential: a blue environment running the old version describes blue/green rather than canary, a CI/CD pipeline with automated testing is helpful but not a defining component of canary traffic control, and an auto scaling group for the new version is an implementation detail rather than a requirement for the canary strategy itself.

Answer

A blue environment running the old version

Answer

A CI/CD pipeline with automated testing

Answer

An auto scaling group for the new version