Elastic Block Storage is limited in size and won’t auto scale with your storage needs.
- False
- True (Ans)
Compared to a relational database’s data model…
- A DynamoDB attribute is like a row, and item is like a column
- None of these
- A DynamoDB key is like a column, and item is like a row
- A DynamoDB attribute is like a column, and item is like a row (Ans)
A local secondary index can be created at any time, unlike a global secondary index.
- True
- False (Ans)
You cannot use an Amazon-provided license for an Oracle Enterprise Edition.
- False
- True (Ans)
What is an example of a native capability of DynamoDB?
- All of these (Ans)
- SSD storage
- Multiple data consistency options
- Built-in data replication
What question does NOT factor into your decisions when creating a new RDS instance?
- Number of manual snapshots you will take (Ans)
- Region to create the database in
- How much storage you need
- Which database engine to use
Redshift customers have to pay data transfer costs when loading the warehouse.
- False (Ans)
- True
Why should a read replica use the same (or better) instance class as the source database?
- None of these
- Because instance size is immutable and can’t be changed later
- To avoid falling behind on synchronization (Ans)
- Because RDS requires it when configuring a read replica
Why should you use multiple files in S3 to import data?
- So Redshift can allocate the biggest files to the largest nodes
- Get better throughput by putting all the node slices to work (Ans)
- All of these
- The cost of importing data goes down
Why would you add a read replica to an RDS database?
- Have an alternate database to insert records
- Scale performance of a high traffic database (Ans)
- Establish an automatic failover database in case of AZ outage
Which of the following are native Redshift capabilities?
- Up to petabytes of storage
- Encryption at rest
- Parallel query processing
- All of these (Ans)
Both query and scan requests support parallel execution via segments.
- False (Ans)
- True
What is the name of the setting that controls placement of data among the nodes?
- Sort key
- Primary key
- Data distribution key (Ans)
- Index key
What happens when you ask for an attribute that wasn’t projected into a local secondary index?
- DynamoDB throws an exception
- The data is retrieved from the source table (Ans)
- Empty data is returned
- DynamoDB copies the data into the index and then returns it
Which of the following are supported RDS database engines?
- MySQL
- All of these (Ans)
- Microsoft SQL Server
- Oracle
Which command lets you validate data without actually importing it?
- VALIDATE
- SKIP
- STAGE
- NOLOAD (Ans)
Read replicas cannot be promoted to standalone RDS database instances.
- True
- False (Ans)
Which of the following databases is based on PostgreSQL?
- Amazon DynamoDB
- Amazon RDS
- All of these
- Amazon Redshift (Ans)
Throughput units are set during table creation time and cannot be changed.
- True
- False (Ans)
How does DynamoDB decide on the number of partitions to create for your table?
- Based on the “partition count” parameter set during table creation
- Based on throughput units chosen
- Based on data storage
- Based on data storage or throughput units chosen (Ans)
I’m Rajesh Kumar, a DevOps, SRE, DevSecOps, Cloud, and Platform Engineering expert passionate about sharing practical knowledge, real-world experiences, and industry best practices. I have worked at Cotocus and regularly write about technology, travel, investing, health, product reviews, and digital marketing through my various platforms.
I publish technical articles at DevOps School, travel stories at Holiday Landmark, stock market insights at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at TrueReviewNow, and SEO and digital marketing strategies at Wizbrand.
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