A company hosts a three-tier web application in the AWS Cloud. A Multi-AZAmazon RDS for MySQL server forms the database layer Amazon ElastiCache forms the cache layer. The company wants a caching strategy that adds or updates data in the cache when a customer adds an item to the database. The data in the cache must always match the data in the database.Which solution will meet these requirements?
Answer(s): B
A) Implement the lazy loading caching strategyB) Implement the write-through caching strategyC) Implement the adding TTL caching strategyD) Implement the AWS AppConfig caching strategyB) Write-through caching ensures data written to the database is simultaneously written to the cache, keeping cache and database synchronized, which meets the requirement that cache data always matches the database. A) Lazy loading loads data into cache on first read, which can lead to cache misses and stale data until accessed, not guaranteeing synchronization. C) Adding TTL caching relies on expiration, not guaranteed consistency between cache and DB. D) AWS AppConfig is a feature flag service, not a caching strategy, and does not manage cache coherence.
A company wants to migrate 100 GB of historical data from an on-premises location to an Amazon S3 bucket. The company has a 100 megabits per second (Mbps) internet connection on premises. The company needs to encrypt the data in transit to the S3 bucket. The company will store new data directly in Amazon S3.Which solution will meet these requirements with the LEAST operational overhead?
AWS DataSync provides encrypted in-transit transfer, handles 100 GB with scalable transfer, and minimizes operational overhead with managed ingestion and scheduling. It supports on-premises agents, integrates with S3, and is designed for large datasets with simple setup.A) s3 sync requires manual handling of encryption in transit and may require more scripting and monitoring; not as fully managed for on-prem migrations.C) Snowball involves physical devices and logistics, adding manual steps and time for delivery, not least operational overhead.D) VPN plus s3 cp would encrypt in transit only if using TLS, but creates ongoing VPN management and does not optimize transfer overhead or provide turnkey migration tooling.
A company containerized a Windows job that runs on .NET 6 Framework under a Windows container. The company wants to run this job in the AWS Cloud. The job runs every 10 minutes. The job’s runtime varies between 1 minute and 3 minutes.Which solution will meet these requirements MOST cost-effectively?
Answer(s): C
Running a scheduled ECS Fargate task (Linux-based or Windows-compatible container) with a scheduled task ensures a containerized Windows .NET 6 job runs on a precise schedule with minimal orchestration and cost. ECS scheduled tasks using Fargate handles periodic execution without managing servers or a separate scheduler.A) Lambda container is not ideal for Windows runtime and 10-minute cadence with multi-minute execution; Lambda container maxs 15 minutes, but Windows support and cold-starts be problematic here.B) AWS Batch is heavier for simple periodic tasks and may incur unnecessary orchestration and compute overhead.D) Standalone ECS task with Windows Task Scheduler requires external scheduling and EC2-like upkeep; not as managed as native ECS scheduled task.
A company wants to move from many standalone AWS accounts to a consolidated, multi-account architecture. The company plans to create many new AWS accounts for different business units. The company needs to authenticate access to these AWS accounts by using a centralized corporate directory service.Which combination of actions should a solutions architect recommend to meet these requirements? (Choose two.)
Answer(s): A,E
AWS Organizations with multi-account setup (A) provides centralized management and consolidated billing for many accounts, meeting the “consolidated, multi-account architecture.” AWS IAM Identity Center (formerly SSO) integration with the organization (E) enables centralized authentication against the company’s corporate directory and provisioning to member accounts.A) Correct: creates and organizes accounts under one Org with all features enabled, suitable for centralized governance.E) Correct: enables SSO across accounts and integrates with the corporate directory for centralized authentication.B) Incorrect: Cognito is user pool/federation for apps, not for AWS account federation at scale.C) Incorrect: SCPs govern permissions but don’t provide authentication/directory integration; Directory Service isn’t the direct integration path for SSO in this scenario.D) Incorrect: AWS Directory Service isn’t the established method to provide centralized SSO authentication across multiple AWS accounts within an Organization.
A company is looking for a solution that can store video archives in AWS from old news footage. The company needs to minimize costs and will rarely need to restore these files. When the files are needed, they must be available in a maximum of five minutes.What is the MOST cost-effective solution?
Answer(s): A
The correct answer is A. S3 Glacier with Expedited retrievals provides the lowest storage cost for rarely accessed archives and can restore within minutes, meeting the five-minute requirement for infrequent access needs. B is incorrect because Standard retrievals from Glacier are slower and more expensive than Expedited for this use case, increasing cost while not providing faster access than needed. C is incorrect because S3 Standard-IA has higher storage costs and is not as cost-effective for long-term archival storage with rare access as Glacier. D is incorrect because One Zone-IA stores data in a single AZ, increasing risk and cost per GB for archives, not the most cost-efficient archival solution.
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