AWS Solutions Architect Associate (SAA-C02) Exam Prep Course - 2021 UPDATED! - Amazon DynamoDB

The video tutorial covers DynamoDB, a NoSQL database service by AWS, highlighting its unique features such as millisecond latency and scalability. It explains the difference between NoSQL and relational databases, and the importance of understanding read consistency types. The tutorial also discusses the application of DynamoDB in mobile apps and its pricing model. Key AWS databases like Aurora and Redshift are mentioned, emphasizing their relevance for exams.

What type of database is DynamoDB classified as?

• Relational Database

• NoSQL Database

• Flat File Database

• Data Warehouse

How does DynamoDB achieve millisecond latency at any scale?

• By limiting the number of users

• By storing data on SSDs and distributing across data centers

• By being hosted on a single server

• By using traditional hard drives

What is the difference between eventual consistent reads and strongly consistent reads in DynamoDB?

• Strongly consistent reads can have delays of a few seconds

• Eventual consistent reads are faster than strongly consistent reads

• Strongly consistent reads ensure synchronization within milliseconds

• Eventual consistent reads are more expensive

Which of the following is a common use case for DynamoDB?

• Storing large video files

• Running complex SQL queries

• Supporting mobile applications with fast data access

• Hosting static websites

How does DynamoDB help in personalizing user experiences in online stores?

• By offering discounts on bulk purchases

• By analyzing user interactions to suggest relevant products

• By providing free shipping options

• By storing user passwords securely

What is the starting cost for storage in DynamoDB?

• $1.00 per GB per month

• $0.50 per GB per month

• $0.25 per GB per month

• $0.10 per GB per month

What should you use to estimate the cost of using DynamoDB?

• AWS Support Center

• Third-party pricing tools

• Manual calculations

• AWS Pricing Calculator