309.md

Bases

309-[DF]-KC - Amazon DynamoDB (somente em inglês)

1. Which type of database is Amazon DynamoDB?

• In-memory database
• NoSQL database
• Relational database
• Hierarchical database

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2. How does Amazon DynamoDB achieve high availability and scalability across Regions?

• By using a collection of multiple items
• By using a collection of multiple replica tables
• By using a collection of multiple partition keys
• By using a collection of one or more attributes

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3. Which statement describes the concept of partitioning in Amazon DynamoDB?

• Each partition has a maximum size of about 10MB.
• Partitioning is the manual replication of table across multiple Availability Zones within an AWS Region.
• Partitioning is the allocation of storage for a table.
• As data grows, table data is partitioned and indexed by a composite key.

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4. Which statement about Amazon DynamoDB partition keys is true?

• No two items in a table can use the same partition keys.
• A table can have two partition keys.
• A primary key is composed of two partition keys
• Partition keys uniquely identify each item in the table.

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5. How many ways can Amazon DynamoDB retrieve data from a DynamoDB table?

• Two ways
• Four ways
• One way
• Three ways

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