CLF-C02 Database Services 2

Question 1

Which AWS database service is best suited for storing and querying highly connected data, such as social network relationships?

Accepted Answer

Amazon Neptune

Answer

Amazon Neptune is a fully managed graph database service designed for highly connected datasets like social networks.

Question 2

A company needs a fully managed in-memory caching service to reduce database load. Which AWS service should they use?

Accepted Answer

Amazon ElastiCache

Answer

Amazon ElastiCache is a fully managed in-memory caching service supporting Redis and Memcached to improve application performance.

Question 3

Which feature of Amazon Aurora makes it different from standard MySQL or PostgreSQL?

Accepted Answer

It automatically replicates data across 3 Availability Zones with 6 copies

Answer

Aurora automatically replicates data six times across three Availability Zones, providing high availability and durability.

Question 4

What is Amazon DynamoDB Accelerator (DAX) primarily used for?

Accepted Answer

Providing microsecond read latency for DynamoDB tables

Answer

DAX is an in-memory cache for DynamoDB that delivers microsecond response times for read-heavy workloads.

Question 5

Which AWS service would you use to migrate an on-premises Oracle database to Amazon Aurora with minimal downtime?

Accepted Answer

AWS Database Migration Service (DMS)

Answer

AWS DMS enables continuous data replication from source to target databases, minimizing downtime during migration.

(CLF-C02) AWS Certified Cloud Practitioner Practice Test