Question 281 of 1,040
Design High-Performing ArchitecturesmediumMultiple ChoiceObjective-mapped

SAA-C03 Design High-Performing Architectures Practice Question

This SAA-C03 practice question tests your understanding of design high-performing architectures. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: rDS Proxy pools and reuses database connections for Aurora and RDS.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A video platform uses Amazon Aurora. The workload has many short-lived database connections from Lambda functions, causing connection storms. What should be added? The architecture review board prefers a managed AWS-native control.

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Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

RDS Proxy

RDS Proxy is the correct choice because it manages a pool of reusable database connections, allowing Lambda functions to share and reuse connections rather than opening and closing them with each invocation. This eliminates connection storms by buffering short-lived connections from Lambda and reducing the load on the Aurora database, all as a fully managed AWS-native service.

Key principle: RDS Proxy pools and reuses database connections for Aurora and RDS.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • S3 Select

    Why it's wrong here

    S3 Select queries object content and is unrelated to database connection pooling.

  • An internet gateway

    Why it's wrong here

    An internet gateway does not manage database connections.

  • A larger Route 53 hosted zone

    Why it's wrong here

    DNS hosted zones do not solve connection storms.

  • RDS Proxy

    Why this is correct

    RDS Proxy pools and manages database connections, improving scalability for serverless and bursty workloads.

    Related concept

    RDS Proxy pools and reuses database connections for Aurora and RDS.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may confuse connection pooling with scaling the database instance or adding network components, but the correct solution is a dedicated proxy layer that manages connections at the application-to-database boundary.

Detailed technical explanation

How to think about this question

RDS Proxy sits between Lambda and Aurora, maintaining a warm pool of connections to the database and multiplexing them across multiple Lambda invocations. This reduces the overhead of TLS handshakes and authentication for each new connection, and it can also enforce IAM authentication for Lambda functions without embedding database credentials. In a real-world scenario, a Lambda function invoked thousands of times per second could exhaust Aurora's max_connections limit (default 80 for db.r5.large) within seconds without RDS Proxy, causing application failures.

KKey Concepts to Remember

  • RDS Proxy pools and reuses database connections for Aurora and RDS.
  • It improves scalability for serverless applications like AWS Lambda.
  • RDS Proxy reduces database overhead from frequent connection establishment/teardown.
  • It enhances fault tolerance by handling database failovers transparently.

TExam Day Tips

  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

RDS Proxy pools and reuses database connections for Aurora and RDS.

Real-world example

How this comes up in practice

A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

What to study next

Got this wrong? Here's your next step.

Review rDS Proxy pools and reuses database connections for Aurora and RDS., then practise related SAA-C03 questions on the same topic to reinforce the concept.

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FAQ

Questions learners often ask

What does this SAA-C03 question test?

Design High-Performing Architectures — This question tests Design High-Performing Architectures — RDS Proxy pools and reuses database connections for Aurora and RDS..

What is the correct answer to this question?

The correct answer is: RDS Proxy — RDS Proxy is the correct choice because it manages a pool of reusable database connections, allowing Lambda functions to share and reuse connections rather than opening and closing them with each invocation. This eliminates connection storms by buffering short-lived connections from Lambda and reducing the load on the Aurora database, all as a fully managed AWS-native service.

What should I do if I get this SAA-C03 question wrong?

Review rDS Proxy pools and reuses database connections for Aurora and RDS., then practise related SAA-C03 questions on the same topic to reinforce the concept.

What is the key concept behind this question?

RDS Proxy pools and reuses database connections for Aurora and RDS.

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Last reviewed: Jun 11, 2026

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This SAA-C03 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAA-C03 exam.