Answer: - B.
DynamoDB is a fully managed NoSQL offering provided by AWS.
It is now available in most regions for users to consume.
For more information on AWS DynamoDB, please refer to the below URL:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Introduction.html
The correct answer is B. DynamoDB.
DynamoDB is a fully managed NoSQL database service provided by AWS. It is designed to provide fast and predictable performance, with seamless scalability. DynamoDB is a highly available, durable, and scalable database service that supports document and key-value store models. It can store and retrieve any amount of data and can handle any level of request traffic. It is ideal for applications that require low-latency data access and high scalability, such as gaming, advertising, and IoT.
AWS RDS (A) is a managed relational database service that supports several database engines, including MySQL, PostgreSQL, Oracle, SQL Server, and MariaDB. It is designed to simplify database administration tasks such as deployment, backups, and software patching. RDS is best suited for applications that require relational databases.
Oracle RDS (C) is not an AWS service. However, Oracle Database can be deployed on AWS using the Amazon EC2 service.
Elastic MapReduce (D) is a fully managed big data processing service that provides a distributed processing framework for processing large amounts of data using Hadoop, Spark, or other open-source tools. It is not a NoSQL database service and is not designed for low-latency data access.
In summary, DynamoDB is the correct answer as it is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability, making it ideal for applications that require low-latency data access and high scalability.
