SAA-C03 exam dumps: questions 501 to 552 of 552

Correct answer: A

• A. Correct.

  Correct: Amazon RDS Proxy is specifically designed to pool and share database connections, reducing the overhead of creating and managing new connections. This solution is ideal for handling high connection rates efficiently.

• B. Incorrect.

  Incorrect: Increasing the instance size may temporarily help handle more connections but does not address the root issue of connection management. It is also a more expensive solution.

• C. Incorrect.

  Incorrect: While Amazon ElastiCache can reduce database load by caching frequently accessed data, it does not address the problem of managing database connections directly.

• D. Incorrect.

  Incorrect: AWS Direct Connect improves network connectivity but does not help with database connection pooling or performance issues related to high connection rates.

Correct answer: A

• A. Correct.

  This is the correct answer. Amazon RDS Proxy acts as a database connection pooler, allowing you to manage and optimize database connections effectively. It reduces the overhead of opening and closing connections during high traffic and does not require changes to the application code.

• B. Incorrect.

  Although increasing the maximum number of connections might temporarily resolve the issue, it does not address the root cause. Managing connections more efficiently with a connection pooler like Amazon RDS Proxy is a better solution.

• C. Incorrect.

  Auto Scaling is not applicable to Amazon RDS instances directly. While you can scale the instance size, this would not resolve the issue with connection limits during peak traffic.

• D. Incorrect.

  ElastiCache can improve performance by caching queries, but it does not manage database connections or resolve issues related to exceeding connection limits.

Correct answer: A

• A. Correct.

  Correct: Amazon RDS Proxy is specifically designed to pool and share database connections, improving database scalability and performance under high connection loads.

• B. Incorrect.

  Incorrect: Increasing the database instance size might temporarily relieve the issue, but it does not address the core problem of managing a high number of connections efficiently.

• C. Incorrect.

  Incorrect: While Amazon ElastiCache can reduce database read load by caching query results, it does not address the issue of handling a large number of concurrent connections to the database.

• D. Incorrect.

  Incorrect: Multi-AZ deployment enhances database availability and fault tolerance but does not provide connection pooling or load management capabilities for handling high traffic.

Correct answer: A

• A. Correct.

  Using Amazon RDS Proxy allows the application to pool and share database connections, reducing the overhead on the database and solving the issue of too many connection requests. This is the most effective solution to address connection latency during scaling.

• B. Incorrect.

  Upgrading the RDS instance may temporarily alleviate the latency issues, but it does not address the root cause of too many connection requests. This is not the most efficient solution.

• C. Incorrect.

  Enabling Multi-AZ deployment improves availability and fault tolerance but does not solve the issue of excessive database connections causing latency.

• D. Incorrect.

  Increasing the maximum number of connections allowed by the database might reduce connection errors temporarily but can lead to resource exhaustion on the database, worsening the problem during peak traffic.

Correct answer: A

• A. Correct.

  Correct. AWS DMS supports heterogeneous and homogeneous database migrations. In this case, using DMS with Amazon RDS for Oracle as the target ensures compatibility with the existing Oracle engine while minimizing downtime during migration.

• B. Incorrect.

  Incorrect. While DMS supports heterogeneous migrations, migrating from Oracle to Amazon Aurora MySQL could involve schema conversion and application changes, which are not mentioned as requirements in the scenario. This makes it less suitable for the use case.

• C. Incorrect.

  Incorrect. AWS Snowball Edge is designed for physical data transfer, not live database migrations. Additionally, transferring data to Amazon S3 and then importing it into RDS would likely result in significant downtime, which the scenario aims to avoid.

• D. Incorrect.

  Incorrect. AWS Glue is an ETL service designed for transforming and loading data into analytics or NoSQL databases, such as DynamoDB, but it is not a service for live database migrations or minimizing downtime.