All practice questions

A content delivery application is hosted on a fleet of Amazon EC2 instances distributed across three Availability Zones. The instances require concurrent read and write access to a shared directory containing static assets. The storage system must deliver low-latency file operations and handle unpredictable throughput spikes of up to $2\text{ GiB/s}$, while experiencing prolonged periods of near-zero activity. Which storage solution should a solutions architect recommend to meet these requirements with the lowest operational overhead?

A company wants to improve the resiliency and availability of its static website hosted on Amazon S3. The website experiences occasional origin availability issues during regional outages. Which two configurations should a solutions architect implement to build a resilient content delivery solution? (Select TWO.)

A company runs a high-performance simulation platform on AWS. The application architecture has three primary workloads:

1. A front-end web portal and API gateway running on Amazon ECS with AWS Fargate. This has a constant, predictable baseline demand of $15\text{ vCPUs}$ and $30\text{ GB}$ of memory $24/7$, with brief, unpredictable spikes up to $60\text{ vCPUs}$ during peak daytime hours.
2. A cluster of backend worker nodes running simulation jobs on Amazon EC2. These jobs are stateless, run for $4$ to $6$ hours, can be interrupted and resumed at any time, and are triggered dynamically based on queue depth.
3. An Amazon RDS for MySQL database that stores application state and runs continuously.

Which two strategies should a solutions architect recommend to optimize the compute and database costs for this platform? (Select TWO.)

A company runs a collaborative data analytics application on a fleet of Amazon EC2 instances. The application requires a high-performance, shared storage solution that supports concurrent read and write access from all instances simultaneously. The storage solution must also scale capacity automatically as the dataset grows.

Which AWS storage service should the company use to meet these requirements?

A financial modeling firm is designing a high-performance compute (HPC) environment on AWS to run tightly-coupled risk simulations. The workload uses Message Passing Interface (MPI) and requires node-to-node network latency of less than $10$ microseconds. The cluster must dynamically scale between $20$ and $80$ compute-optimized EC2 instances based on queue depth. During load testing, the team observes that scaling out the Auto Scaling group incrementally results in frequent launch failures with `InsufficientInstanceCapacity` errors, and the network performance between newly launched instances does not meet the low-latency SLA.

Which architecture should a Solutions Architect recommend to resolve the capacity errors and maintain the required low-latency performance?

A financial services company is developing a real-time market analysis application deployed on a fleet of Amazon EC2 instances. The application needs to process and store millions of small analysis reports. The storage solution must support over $18,000$ read requests per second and $12,000$ write requests per second with sub-millisecond API latency. The files must be accessible via standard HTTPS APIs from any instance in the fleet, and the storage layer must automatically scale to handle unpredictable traffic spikes without manual intervention or performance degradation.

Which combination of actions should the solutions architect recommend to meet these requirements? (Select TWO.)

A media company runs a transcoding application that generates output files of approximately $2$ MB each. These files are accessed frequently by downstream users for exactly $10$ days, after which they are deleted. The company wants to minimize its storage costs on Amazon S3. Which storage strategy is the most cost-effective for these output files?

A company is migrating its transactional application to Amazon RDS. To prevent downtime during an infrastructure failure or an Availability Zone outage, the solutions architect must configure the database for automatic failover to a standby instance in another Availability Zone with zero manual intervention. Which database configuration should the solutions architect recommend?

A startup runs a steady-state transaction processing application on Amazon EC2 instances and AWS Fargate tasks. They also run a reporting database on Amazon RDS for PostgreSQL that operates 24/7. To minimize compute costs, the startup wants to commit to a 1-year term. Which combination of purchasing options provides the most cost-effective coverage for these resources?

A company is planning to deploy a new web application on AWS. The application will consist of a steady-state web server hosted on Amazon EC2 that must run continuously 24/7, and an Amazon RDS for MySQL database. The workload is highly predictable. Which combination of purchasing options should the company select to minimize compute costs for these resources most effectively? (Select TWO.)

An automotive engineering firm is designing a disaster recovery solution for its on-premises computer-aided design (CAD) file server, which holds $40\text{ TB}$ of data. The firm has defined a Recovery Point Objective (RPO) of $4\text{ hours}$ and a Recovery Time Objective (RTO) of $2\text{ hours}$. During normal operations, on-premises users must access these files with sub-millisecond local latency. In the event of a local site failure, the files must be immediately accessible from a highly available and resilient environment in AWS. Which storage architecture meets these requirements most cost-effectively?

An enterprise is planning a high-performance hybrid network architecture to connect their on-premises data center with two AWS Regions: us-east-1 and us-west-2. The company has an existing on-premises network with a $10\text{ Gbps}$ dedicated line. The new setup must support a continuous data replication stream of at least $5\text{ Gbps}$ between the on-premises database and multiple Amazon VPCs in both regions, while minimizing latency and routing complexity. Which combination of AWS networking components should a solutions architect recommend to meet these requirements? (Select TWO.)

A global manufacturing firm runs a quality-control imaging system across several physical factories. The local factory systems require low-latency access to raw imaging data generated during the last 30 days. After 30 days, the data must be archived in the cloud, where it must remain durable and highly available for regulatory audits, with a Recovery Time Objective (RTO) of 5 hours. To protect against a regional disaster, all cloud archives must be replicated to a secondary AWS Region with a Recovery Point Objective (RPO) of 15 minutes. Which combination of actions should a solutions architect recommend to satisfy these requirements? (Select TWO.)

A fleet logistics company is migrating its real-time telemetry processing platform to AWS. The platform receives data updates from $2,500,000$ active vehicles globally. Each vehicle transmits updates every $10$ seconds, resulting in a write throughput of $250,000$ writes per second. Each update consists of GPS coordinates, speed, and engine metrics. The monitoring dashboard requires real-time access to the most recent coordinate updates per vehicle with sub-millisecond read latency. A solutions architect must design a high-performing database architecture that avoids partition throttling and supports this read/write workload. Which two configurations should the solutions architect implement to meet these requirements? (Select TWO.)

A company is designing a hybrid network architecture to connect its on-premises data center to three VPCs in the us-east-1 Region. The connection must support a database replication traffic load that peaks at $3.2\text{ Gbps}$. The company's security policy dictates that all traffic traversing this hybrid connection must be encrypted in transit using IPsec. Which network architecture will meet these requirements while providing the highest performance and scalability?

A financial analytics firm generates daily transaction summaries that are stored in an Amazon S3 bucket. The summaries are accessed frequently by downstream applications for the first $30 \text{ days}$ after creation. After $30 \text{ days}$, access to the summaries drops to almost zero, but they must be retained for compliance purposes for a total of $45 \text{ days}$ from creation. During the compliance retention period, the summaries must remain queryable within milliseconds. Which of the following lifecycle configurations represents the most cost-effective storage strategy for these summaries?

A software provider is deploying a containerized real-time telemetry processing application on Amazon ECS using AWS Fargate. The ingestion microservice receives high-velocity TCP traffic on port 8082, while administrative health and readiness checks are exposed on port 9000. Once ingested, the raw telemetry is streamed to a downstream high-performance computing (HPC) cluster of Amazon EC2 instances located in a single Availability Zone. This HPC cluster runs tightly-coupled Message Passing Interface (MPI) simulations that require sub-millisecond node-to-node network latency and maximum throughput.

Which TWO configuration steps must a solutions architect implement to satisfy the performance and health-monitoring requirements for this architecture?

A solutions architect is configuring an active-passive disaster recovery strategy in Amazon Route 53. The primary application runs on an Application Load Balancer (ALB), and the backup site is a static website hosted on Amazon S3. Which of the following Route 53 record configurations must the solutions architect create to implement this failover mechanism? (Select TWO.)

A company hosts a collection of static PDF user guides on an Amazon S3 bucket and distributes them globally using an Amazon CloudFront distribution. The company notices that despite using a Content Delivery Network (CDN), the S3 bucket is experiencing high request volumes, leading to unexpected data transfer costs. An engineer checks the CloudFront configuration and finds that edge locations are always requesting the PDF guides directly from the S3 bucket.

Which configuration issue is causing this behavior?

A solutions architect is designing a highly resilient architecture for a web application. The application's static assets are stored in a primary Amazon S3 bucket in one AWS Region. The architect needs to ensure that the assets remain available even if the primary S3 bucket experiences an outage, by failing over to a backup S3 bucket in a different Region with minimal operational complexity. Which configuration will meet these requirements?