CV0-004 Cloud Architecture and Design Practice Test 8 — 15 Questions

Question 1

A company wants to migrate its on-premises workloads to the cloud while maintaining the ability to run some sensitive applications on-premises. Which cloud deployment model best meets this requirement?

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

Accepted Answer

Hybrid cloud. A hybrid cloud connects on-premises infrastructure with public cloud resources, allowing workloads to run in both environments as needed.

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Multi-cloud

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Private cloud

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Public cloud

Question 2

Which cloud service model gives the customer the most control over the operating system and applications, while the provider manages the physical hardware, network, and storage?

Accepted Answer

IaaS. IaaS provides virtualized computing resources where the customer manages the OS, applications, and middleware, while the provider manages the underlying infrastructure.

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FaaS

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PaaS

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SaaS

Question 3

A financial services company requires a recovery time objective (RTO) of 15 minutes and a recovery point objective (RPO) of 5 minutes for its critical database. Which high availability architecture should they implement?

Accepted Answer

Active-passive with synchronous replication. Active-passive with synchronous replication provides fast failover and minimal data loss, meeting the RTO of 15 minutes and RPO of 5 minutes. Hot standby can fail over quickly, but synchronous replication ensures the RPO.

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Warm standby

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Active-active with asynchronous replication

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Cold standby

Question 4

A company is experiencing increased traffic to its web application. They want to handle the load by adding more web server instances behind a load balancer. This approach is known as:

Accepted Answer

Horizontal scaling. Horizontal scaling (scaling out) adds more instances to distribute the load, as opposed to vertical scaling which adds resources to a single instance.

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Stateless design

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Auto-scaling

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Vertical scaling

Question 5

A company is designing a VPC in AWS. They need to host a web application with a public-facing load balancer, web servers in private subnets, and a database in a separate private subnet. Which network architecture is most secure and aligns with best practices?

Accepted Answer

Public subnet for load balancer, private subnet for web servers, separate private subnet for database. A three-tier architecture with a public subnet for the load balancer, private subnets for web servers, and a separate private subnet for the database provides security and isolation.

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Public subnet for load balancer, private subnet for web servers and database together

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All resources in public subnets with security groups restricting access

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All resources in private subnets with a VPN connection

Question 6

A company runs a stateless web application on AWS EC2 instances behind an Application Load Balancer. To reduce costs, they want to use the most cost-effective compute option that can handle variable traffic and be interrupted. Which pricing model should they use for the EC2 instances?

Accepted Answer

Spot instances. Spot instances offer significant cost savings but can be interrupted, making them suitable for stateless, fault-tolerant workloads that can handle interruptions.

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Dedicated hosts

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Reserved instances

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On-demand instances

Question 7

A company is considering using a public cloud provider. Which TWO characteristics are typical of a public cloud deployment? (Select TWO.)

Accepted Answer

Resources are shared among multiple customers. A public cloud is characterized by multi-tenancy (resources shared among multiple customers) and pay-as-you-go pricing, where the customer pays only for the resources they use. Options C and D describe these typical characteristics. Option A is incorrect because the cloud provider manages the physical infrastructure, not the customer. Option B describes a private cloud, which is isolated to a single organization. Option E describes on-premises deployment, not public cloud.

Answer

The customer has full control over the physical infrastructure

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The deployment is isolated to a single organization

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Resources are hosted on-premises

Question 8

A company is designing a disaster recovery solution with a recovery time objective (RTO) of 1 hour and a recovery point objective (RPO) of 15 minutes. Which TWO strategies would meet these requirements? (Select TWO.)

Accepted Answer

Hot standby. Hot standby provides near-zero RTO and RPO, while warm standby can achieve RTO of 1 hour and RPO of 15 minutes if properly configured. Cold standby and backup/restore typically have longer RTO/RPO.

Answer

Active-active

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Backup and restore

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Cold standby

Question 9

A company is designing an auto-scaling solution for a stateless application. Which TWO features are essential for the application to scale horizontally without issues? (Select TWO.)

Accepted Answer

Stateless application design. Horizontal scaling requires that the application is stateless, meaning no session data is stored locally on instances, so any instance can handle any request. A load balancer is essential to distribute incoming traffic across multiple instances, ensuring no single instance is overwhelmed and that requests can be sent to any available instance. In contrast, stateful session management (B) and local storage (C) would tie data to specific instances, preventing seamless scaling. Vertical scaling (D) is about increasing resources of existing instances, not adding more instances horizontally.

Answer

Stateful session management

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Use of local storage for application data

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Vertical scaling on the existing instances

Question 10

A company is designing a hybrid cloud storage solution. Which TWO storage services are suitable for a shared file system accessible from both on-premises and cloud VMs? (Select TWO.)

Accepted Answer

Azure Files. File storage services like Amazon EFS and Azure Files provide shared file systems accessible over NFS or SMB. Block and object storage are not typically used as shared file systems.

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Azure Blob

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Amazon S3

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Amazon EBS

Question 11

An organization is migrating to AWS and wants to optimize costs for a production database that runs 24/7. Which TWO pricing models would provide the most cost savings while ensuring the database is not interrupted? (Select TWO.)

Accepted Answer

Reserved instances. Reserved Instances provide significant discounts for steady-state workloads like a production database that runs 24/7. Compute Savings Plans offer flexible, cost-effective pricing across instance families with a commitment to consistent usage. Both ensure uninterrupted operation because they guarantee capacity and are not subject to interruption. On-demand (B) is more expensive for long-term use, Spot instances (D) can be terminated without notice, and Dedicated hosts (A) are primarily for licensing or compliance requirements and are typically more costly.

Answer

Dedicated hosts

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On-demand instances

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Spot instances

Question 12

A company is designing a multi-cloud strategy to ensure high availability across AWS and Azure. They want to use a global load balancer to route traffic based on latency. Which THREE components are required for this setup? (Select THREE.)

Accepted Answer

Health checks for endpoints in both clouds. Health checks, latency-based routing, and DNS services are essential. Global load balancers at each provider and a CDN are not required for latency-based routing.

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A separate global load balancer in each cloud

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A CDN to cache content at edge locations

Question 13

A company is using a PaaS offering to host a web application. Which THREE management responsibilities are retained by the customer? (Select THREE.)

Accepted Answer

Application code. In PaaS, the customer manages the application code, data, and access configuration. The provider manages the runtime, OS, and infrastructure.

Answer

Runtime environment

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Operating system patches

Question 14

A company wants to ensure fault tolerance for a critical application by deploying across multiple availability zones. Which THREE design decisions contribute to fault tolerance? (Select THREE.)

Accepted Answer

Placing a load balancer in front of the instances to distribute traffic. Deploying across multiple AZs, using load balancers to distribute traffic, and having redundant components in each AZ contribute to fault tolerance. Single instance and same AZ do not provide fault tolerance.

Answer

Using a single database instance without replication

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Using a single large instance in one AZ

Question 15

A company is evaluating storage options for different use cases. Which TWO storage types are most suitable for hosting a relational database in the cloud? (Select TWO.)

Accepted Answer

File storage. Block storage (e.g., AWS EBS, Azure Disk) is the primary choice for hosting relational databases due to low latency and direct block-level access. File storage (e.g., AWS EFS, Azure Files) can also host relational databases, especially in shared storage scenarios, though with higher latency and lower performance. Therefore, both block storage and file storage are suitable for hosting relational databases. Cache, archive, and object storage are not designed for active database hosting.

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Cache storage

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Archive storage

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Object storage