An application must send database changes to an Aurora cluster and continue targeting the active writer after failover. Which endpoint should it use?
3 Amazon Aurora in Practice Online Quiz Questions
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An application needs to distribute read-only connections among the available Aurora reader instances. What endpoint should it use?
In an Aurora cluster, the instance handles reads and writes, while instances handle read-only work.
True or false: Because Aurora stores data across multiple Availability Zones, a cluster without reader instances has the same ready compute failover capacity as a cluster with readers.
- A
True
- B
False
A team is estimating storage for an Aurora cluster with several reader instances. Which description best reflects how the cluster stores its data?
- A
Each reader has a separate full copy of the database.
- B
Readers store only data that changes after they are created.
- C
The cluster's instances use shared cluster storage.
- D
The writer stores data locally, while readers access it through backups.
A workload needs additional reader instances. What is the maximum number of Aurora Replicas a cluster can have?
True or false: Aurora Serverless v2 adjusts a serverless writer's or reader's capacity within a configured range.
- A
True
- B
False
A team plans to migrate an application from PostgreSQL to Aurora PostgreSQL-Compatible. Which checks should it perform before committing to the migration? Select all that apply.
- A
Test the schema and queries against the specific Aurora version.
- B
Assume every extension in the open-source engine is supported identically.
- C
Check whether required extensions are supported.
- D
Skip testing if the application uses a familiar database driver.
- E
Validate application assumptions against the target version.
Aurora Global Database replicates data between Regions , making this a different protection layer from in-Region storage replication.
A team has selected an Aurora engine version for a deployment in a particular AWS Region. What should it verify before finalizing the plan?
- A
Assume every Aurora version is available in every Region.
- B
Check only the open-source engine's release notes.
- C
Choose a version based solely on its name, since Aurora versions match upstream releases exactly.
- D
Verify the target Aurora version's feature support and availability in the intended Region.
A service must plan for a Region-wide disruption and is evaluating Aurora Global Database. Which statements should inform its recovery plan? Select all that apply.
- A
A secondary cluster can support disaster recovery.
- B
Cross-Region replication is synchronous, so no recovery-point planning is needed.
- C
The secondary cluster can support low-latency local reads.
- D
Plan and test promotion and application reconnection rather than assuming automatic activation.
A production team relies on Aurora's multi-AZ storage and plans to run a cluster with no reader instances. Explain what this design provides and what it does not provide for writer failure. Include how reader placement and application connections affect failover readiness.
A team requires MariaDB and does not need Aurora-specific capabilities. Which conclusion best follows when comparing Aurora with standard Amazon RDS?
- A
Choose Aurora because every RDS engine is available in Aurora and it is always faster.
- B
Consider standard RDS because MariaDB is an engine Aurora does not provide.
- C
Choose Aurora because it is only a performance setting for standard RDS engines.
- D
Choose Aurora without benchmarking or comparing total costs.
After an Aurora writer fails and the writer endpoint is redirected to a promoted reader, what should the client application be designed to do?
- A
Reconnect and retry appropriately after connection errors.
- B
Keep using the existing session because endpoint redirection preserves every session.
- C
Send all new writes to a reader endpoint until the original writer returns.
- D
Avoid retry logic because failover cannot change the writer.
An application needs to send read-only connections to available Aurora reader instances. Which endpoint should it use?
- A
Use the cluster (writer) endpoint because it sends reads to a reader instance.
- B
Use the reader endpoint because it distributes read-only connections among available readers.
- C
Use the cluster (writer) endpoint because it distributes connections among all readers.
- D
Use a separate endpoint for each Availability Zone because Aurora does not provide a reader endpoint.
Complete this statement using the verb used in the material: The cluster volume ____ as data grows.
True or false: Aurora reader instances share the cluster's storage and do not each require a separate full copy of the database.
- A
True
- B
False
An application is built for PostgreSQL and you want to evaluate its compatible Aurora edition. What is the edition called? Enter the edition name.
A team plans to migrate an existing PostgreSQL application to Aurora PostgreSQL-Compatible. Which preparation best accounts for differences between compatible engines?
- A
Assume that matching SQL compatibility guarantees every feature and behavior will match.
- B
Test only the database drivers, since schema, queries, and extensions are unaffected by engine differences.
- C
Test the schema, queries, required extensions, settings, drivers, and application assumptions against the planned Aurora version.
- D
Migrate first, then check whether the Aurora version and required features are available in the Region.
A workload has sharp changes in compute demand. Which Aurora option is designed to adjust serverless instance capacity, while still requiring the team to plan limits and feature requirements?
- A
Use a fixed instance size because Aurora Serverless v2 adjusts only storage capacity.
- B
Evaluate Aurora Serverless v2, while planning its capacity range and feature requirements.
- C
Add reader instances because they automatically change the writer's compute capacity.
- D
Use Aurora Global Database because cross-Region replication adjusts compute capacity to match traffic.
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