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Amazon BDS-C00 Exam (page: 3)
Amazon AWS Certified Big Data -Speciality
Updated on: 31-Mar-2026

Viewing Page 3 of 100
BDS-C00 PDF 492 Questions

True or false: For an online game, it is better to use DynamoDB than a relational database engine.

  1. This is true because DynamoDB fully manages your database and can grow with your application requirements.
  2. This is false.
  3. This is true because DynamoDB has all the functionalities of a relational database.
  4. This is false because a relational database engine on Redshift has more functionalities than DynamoDB

Answer(s): A

Explanation:

This is true. An online game might start out with only a few thousand users and a light database workload consisting of 10 writes per second and 50 reads per second. However, if the game becomes successful, it may rapidly grow to millions of users and generate tens (or even hundreds) of thousands of writes and reads per second. It may also create terabytes or more of data per day.
Developing your applications against Amazon DynamoDB enables you to start small and simply dialup your request capacity for a table as your requirements scales, without incurring downtime.
Amazon DynamoDB gives you the peace of mind that your database is fully managed and can grow with your application requirements.


Reference:

http://aws.amazon.com/dynamodb/faqs/



In regard to DynamoDB, for which one of the following parameters does Amazon not charge you?

  1. I/O usage within the same Region
  2. Cost per provisioned write units
  3. Storage cost
  4. Cost per provisioned read units

Answer(s): A

Explanation:

In DynamoDB, you will be charged for the storage and the throughput you use rather than for the I/O which has been used.


Reference:

http://aws.amazon.com/dynamodb/pricing/



Which of the following does Amazon DynamoDB perform?

  1. Neither increment nor decrement operations
  2. Only increment on vector values
  3. Atomic increment or decrement on scalar values
  4. Only atomic decrement operations

Answer(s): C

Explanation:

Amazon DynamoDB allows atomic increment and decrement operations on scalar values. Reference: http://aws.amazon.com/dynamodb/faqs/



A gaming company comes to you and asks you to build them infrastructure for their site. They are not sure how big they will be as with all start ups they have limited money and big ideas. What they do tell you is that if the game becomes successful, like one of their previous games, it may rapidly grow to millions of users and generate tens (or even hundreds) of thousands of writes and reads per second. After considering all of this, you decide that they need a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. Which of the following databases do you think would best fit their needs?

  1. Amazon DynamoDB
  2. Amazon SimpleDB
  3. Amazon Redshift
  4. Any non-relational database.

Answer(s): A

Explanation:

Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. Amazon DynamoDB enables customers to offload the administrative burdens of operating and scaling distributed databases to AWS, so they don’t have to worry about hardware provisioning, setup and configuration, replication, software patching, or cluster scaling.
Today’s web-based applications generate and consume massive amounts of data. For example, an online game might start out with only a few thousand users and a light database workload consisting of 10 writes per second and 50 reads per second. However, if the game becomes successful, it may rapidly grow to millions of users and generate tens (or even hundreds) of thousands of writes and reads per second. It may also create terabytes or more of data per day. Developing your applications against Amazon DynamoDB enables you to start small and simply dial-up your request capacity for a table as your requirements scale, without incurring downtime. You pay highly cost-efficient rates for the request capacity you provision, and let Amazon DynamoDB do the work over partitioning your data and traffic over sufficient server capacity to meet your needs. Amazon DynamoDB does the database management and administration, and you simply store and request your data. Automatic replication and failover provides built-in fault tolerance, high availability, and data durability. Amazon DynamoDB gives you the peace of mind that your database is fully managed and can grow with your application requirements.


Reference:

http://aws.amazon.com/dynamodb/faqs/



Could you use IAM to grant access to Amazon DynamoDB resources and API actions?

  1. Yes
  2. Depended to the type of access
  3. No
  4. In DynamoDB there is no need to grant access

Answer(s): A

Explanation:

Amazon DynamoDB integrates with AWS Identity and Access Management (IAM). You can use AWS IAM to grant access to Amazon DynamoDB resources and API actions. To do this, you first write an AWS IAM policy, which is a document that explicitly lists the permissions you want to grant. You then attach that policy to an AWS IAM user or role.


Reference:

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/UsingIAMWithDDB.html



Viewing Page 3 of 100



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