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AWS Storage and Databases Flashcards

7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning โ€” missed cards come back until you master them.

Read the first 7 AWS Storage and Databases flashcards as text
  1. Which S3 storage class is designed for data that is accessed less than once a month and requires millisecond retrieval?

    Answer: S3 Glacier Instant Retrieval

    S3 Glacier Instant Retrieval is designed for rarely accessed archive data that still needs millisecond retrieval times.

  2. An application needs to store session state data with automatic expiration after 30 minutes. Which AWS service is the best fit?

    Answer: Amazon DynamoDB with TTL

    DynamoDB's Time to Live (TTL) feature automatically deletes items after a specified timestamp, making it ideal for session data expiration.

  3. What is the maximum size of a single object that can be stored in Amazon S3?

    Answer: 5 TB

    Amazon S3 supports individual objects up to 5 TB in size; objects larger than 5 GB must use multipart upload.

  4. Which Amazon RDS feature automatically creates a standby replica in a different Availability Zone to improve availability?

    Answer: Multi-AZ deployment

    RDS Multi-AZ deployment synchronously replicates data to a standby instance in another AZ, enabling automatic failover.

  5. Which AWS storage service provides a fully managed Network File System (NFS) that can be mounted by multiple EC2 instances simultaneously?

    Answer: Amazon EFS

    Amazon EFS (Elastic File System) is a managed NFS that supports concurrent access from thousands of EC2 instances.

  6. A company needs a petabyte-scale data warehouse for complex analytical queries. Which AWS service should they use?

    Answer: Amazon Redshift

    Amazon Redshift is AWS's fully managed data warehouse optimized for complex analytical queries on petabyte-scale datasets.

  7. What does S3 Object Lock's 'Compliance' mode ensure compared to 'Governance' mode?

    Answer: No user, including the root account, can delete or overwrite a locked object

    In Compliance mode, a protected object version cannot be overwritten or deleted by any user, including the root account, for the duration of the retention period.