Amazon Amazon Certifications SAP-C01 Questions & Answers

• Question 581:

  ____________pricing offers significant savings over the normal price of DynamoDB provisioned throughput capacity.

  A. Discount Voucher

  B. Reserved Capacity

  C. Discount Service

  D. Reserved Point

  Correct Answer: B

  Reserved Capacity pricing offers significant savings over the normal price of DynamoDB provisioned throughput capacity. When you buy Reserved Capacity, you pay a one-time upfront fee and commit to paying for a minimum usage level, at the hourly rates indicated above, for the duration of the Reserved Capacity term.

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

• Question 582:

  In DynamoDB, "The data is eventually consistent" means that__________.

  A. a read request immediately after a write operation might not show the latest change.

  B. a read request immediately after a write operation shows the latest change.

  C. a write request immediately after a read operation might cause data loss.

  D. a read request immediately after a write operation might cause data loss.

  Correct Answer: A

  In DynamoDB, it takes time for the update to propagate to all copies. The data is eventually consistent, meaning that a read request immediately after a write operation might not show the latest change.

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

• Question 583:

  Someone has recommended a new client to you and you know he is into online gaming and you are almost certain he will want to set up an online gaming site which will require a database service that provides fast and predictable performance with seamless scalability.

  Which of the following AWS databases would be best suited to an online gaming site?

  A. Amazon SimpleDB

  B. Amazon DynamoDB

  C. Amazon Redshift

  D. Amazon ElastiCache

  Correct Answer: B

  Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. You can use Amazon DynamoDB to create a database table that can store and retrieve any amount of data, and serve any level of request traffic. Amazon DynamoDB automatically spreads the data and traffic for the table over a sufficient number of servers to handle the request capacity specified by the customer and the amount of data stored, while maintaining consistent and fast performance.

  Reference: http://aws.amazon.com/documentation/dynamodb/

• Question 584:

  In regard to DynamoDB, when you create a table with a hash-and-range key.

  A. You must define one or more Local secondary indexes on that table

  B. You must define one or more Global secondary indexes on that table

  C. You can optionally define one or more secondary indexes on that table

  D. You must define one or more secondary indexes on that table

  Correct Answer: C

  When you create a table with a hash-and-range key, you can optionally define one or more secondary indexes on that table. A secondary index lets you query the data in the table using an alternate key, in addition to queries against the primary key.

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

• Question 585:

  Is it possible to load data from Amazon DynamoDB into Amazon Redshift?

  A. No, you cannot load all the data from DynamoDB table to a Redshift table as it limited by size constraints.

  B. No

  C. No, DynamoDB data types do not correspond directly with those of Amazon Redshift.

  D. Yes

  Correct Answer: D

  Yes. When you copy data from an Amazon DynamoDB table into Amazon Redshift, you can perform complex data analysis queries on that data. This includes joins with other tables in your Amazon Redshift cluster.

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

• Question 586:

  In DynamoDB, which of the following allows you to set alarms when you reach a specified threshold for a metric?

  A. Alarm Signal

  B. DynamoDB Analyzer

  C. CloudWatch

  D. DynamoDBALARM

  Correct Answer: C

  CloudWatch allows you to set alarms when you reach a specified threshold for a metric.

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

• Question 587:

  DynamoDB uses only as a transport protocol, not as a storage format.

  A. WDDX

  B. XML

  C. SGML

  D. JSON

  Correct Answer: D

  DynamoDB uses JSON only as a transport protocol, not as a storage format. The AWS SDKs use JSON to send data to DynamoDB, and DynamoDB responds with JSON, but DynamoDB does not store data persistently in JSON format.

  Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Programming.LowLev elAPI.html

• Question 588:

  Which of the following is NOT true of the DynamoDB Console?

  A. It allows you to add local secondary indexes to existing tables.

  B. It allows you to query a table.

  C. It allows you to set up alarms to monitor your table's capacity usage.

  D. It allows you to view items stored in a tables, add, update, and delete items.

  Correct Answer: A

  The DynamoDB Console lets you do the following: Create, update, and delete tables. The throughput calculator provides you with estimates of how many capacity units you will need to request based on the usage information you provide. View items stored in a tables, add, update, and delete items. Query a table. Set up alarms to monitor your table's capacity usage. View your table's top monitoring metrics on real-time graphs from CloudWatch. View alarms configured for each table and create custom alarms.html.

• Question 589:

  In DynamoDB, a projection is__________.

  A. systematic transformation of the latitudes and longitudes of the locations inside your table

  B. importing data from your file to a table

  C. exporting data from a table to your file

  D. the set of attributes that is copied from a table into a secondary index

  Correct Answer: D

  In DynamoDB, a projection is the set of attributes that is copied from a table into a secondary index.

  Reference:

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

• Question 590:

  An organization is setting up a highly scalable application using Elastic Beanstalk. The organization is using ELB and RDS with VPC. The organization has public and private subnets within the cloud.

  Which of the below mentioned configurations will not work in this scenario?

  A. To setup RDS in a private subnet and ELB in a public subnet.

  B. The configuration must have public and private subnets in the same AZ.

  C. The configuration must have two private subnets in separate AZs.

  D. The EC2 instance should have a public IP assigned to it.

  Correct Answer: D

  The Amazon Virtual Private Cloud (Amazon VPC) allows the user to define a virtual networking environment in a private, isolated section of the Amazon Web Services (AWS) cloud. The user has complete control over the virtual networking environment. If the organization is planning to implement a scalable secure application using RDS, VPC and ELB the organization should follow below mentioned configurations: Setup RDS in a private subnet Setup ELB in a public subnet Since RDS needs a subnet group, the organization should have two private subnets in the same zone The ELB needs private and public subnet to be part of same AZs It is not required that instances should have a public IP assigned to them. The instances can be a part of a private subnet and the organization can setup a corresponding routing mechanism.

  Reference: http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/vpc-rds.html