A company has an aging network-attached storage (NAS) array in its data center. The NAS array presents SMB shares and NFS shares to client workstations. The company does not want to purchase a new NAS array. The company also does not want to incur the cost of renewing the NAS array’s support contract. Some of the data is accessed frequently, but much of the data is inactive.A solutions architect needs to implement a solution that migrates the data to Amazon S3, uses S3 Lifecycle policies, and maintains the same look and feel for the client workstations. The solutions architect has identified AWS Storage Gateway as part of the solution.Which type of storage gateway should the solutions architect provision to meet these requirements?
Answer(s): D
Storage Gateway should present a local NAS-like interface backed by S3, enabling SMB/NFS access while migrating to S3 with lifecycle policies; File Gateway provides file-based access to S3 and is designed for on-prem hosts to access S3 as a file share.A) Volume Gateway is block-based iSCSI storage, not suitable for SMB/NFS via a familiar file share.B) Tape Gateway emulates tape libraries for archival, not active file shares.C) Amazon FSx File Gateway is not a defined gateway service; FSx offers managed file systems, not a gateway to S3.D) Amazon S3 File Gateway provides SMB/NFS-compatible file shares backed by S3, supporting data tiering and lifecycle policies.
A company has an application that is running on Amazon EC2 instances. A solutions architect has standardized the company on a particular instance family and various instance sizes based on the current needs of the company.The company wants to maximize cost savings for the application over the next 3 years. The company needs to be able to change the instance family and sizes in the next 6 months based on application popularity and usage.Which solution will meet these requirements MOST cost-effectively?
Answer(s): A
The correct answer is A) Compute Savings Plan.Compute Savings Plans offer the broadest flexibility, committing to compute usage (measured in $/hour) across any instance family, size, region, or Sagemaker/Lambda usage, with the ability to switch instance families as needs change over the 3-year term, maximizing overall savings.B) EC2 Instance Savings Plan is narrower: applies only to a specific instance family within a chosen region, limiting flexibility to switch families. C) Zonal Reserved Instances require payment upfront/partial and apply to a single Availability Zone, restricting changes and topologies. D) Standard Reserved Instances are fixed to a specific instance type in a region, with limited flexibility for changing families or sizes during the term.
A company collects data from a large number of participants who use wearable devices. The company stores the data in an Amazon DynamoDB table and uses applications to analyze the data. The data workload is constant and predictable. The company wants to stay at or below its forecasted budget for DynamoDB.Which solution will meet these requirements MOST cost-effectively?
Answer(s): B
Provisioned mode with explicit RCUs and WCUs aligns capacity exactly to forecasted workload, enabling predictable costs within budget and avoiding pay-per-request variability. This is cost-effective for a constant, predictable workload.A) Incorrect: DynamoDB Standard-IA is not a valid capacity model for DynamoDB tables; there is no Standard-IA in DynamoDB. B) Correct: Provisioned mode with specified RCUs/WCUs gives predictable costs and supports reserved capacity optimization if applicable. C) Incorrect: On-demand mode charges per request and is less cost-predictable for steady workloads. D) Incorrect: On-demand with reserved capacity is not a valid configuration; reserved capacity applies to provisioned mode, not on-demand.
A company stores confidential data in an Amazon Aurora PostgreSQL database in the ap-southeast-3 Region. The database is encrypted with an AWS Key Management Service (AWS KMS) customer managed key. The company was recently acquired and must securely share a backup of the database with the acquiring company’s AWS account in ap-southeast-3.What should a solutions architect do to meet these requirements?
The correct answer is B.A) Incorrect: Copying to an unencrypted snapshot defeats encryption and compliance requirements; the data remains sensitive and not protected as in the original KMS-managed state.C) Incorrect: Changing to a different AWS managed KMS key and alias does not grant cross-account access to the original customer-managed key; sharing requires key policy updates, not a key alias switch.D) Incorrect: Downloading and re-uploading to S3 introduces additional risk, and KMS encryption is not preserved or automatically aligned with cross-account access; this is not the proper method for sharing an RDS/Aurora snapshot.B) Correct: Include the acquiring account in the KMS key policy so they can decrypt the snapshot, preserving encryption and meeting access control.
A company uses a 100 GB Amazon RDS for Microsoft SQL Server Single-AZ DB instance in the us-east-1 Region to store customer transactions. The company needs high availability and automatic recovery for the DB instance.The company must also run reports on the RDS database several times a year. The report process causes transactions to take longer than usual to post to the customers’ accounts. The company needs a solution that will improve the performance of the report process.Which combination of steps will meet these requirements? (Choose two.)
Answer(s): A,C
High availability and automatic recovery are provided by Multi-AZ (A), and read replicas (C) offload long-running reporting queries, improving performance without affecting the primary write workload.A) Correct. Converting to Multi-AZ enables automatic failover and standby synchronization, meeting HA and recovery needs.B) Incorrect. Snapshots/restores are manual DR steps, not automatic HA, and don’t provide an active read path for reports.C) Correct. A read replica in another AZ offloads report queries from the primary, improving report performance without impacting transactional throughput.D) Incorrect. RDS Custom is for different management models and is not needed for standard HA + read-scaling; it’s not the solution here.E) Incorrect. RDS Proxy optimizes connections but does not specifically ensure HA or offload reporting workloads in this scenario.
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