R

Question 1

range GET

Answer 1

A request that specifies a byte range of data to get for a download. If an object is large, you can break up a download into smaller units by sending multiple range GET requests that each specify a different byte range to GET.

Question 2

raw email

Answer 2

A type of sendmail request with which you can specify the email headers and MIME types.

Question 3

RDS

Answer 3

See Amazon Relational Database Service (Amazon RDS).

Question 4

read replica

Answer 4

Amazon RDS: An active copy of another DB instance. Any updates to the data on the source DB instance are replicated to the read replica DB instance using the built-in replication feature of MySQL 5.1.

Question 5

real-time predictions

Answer 5

Amazon Machine Learning: Synchronously generated predictions for individual data observations.

See Also batch prediction.

Question 6

receipt handle

Answer 6

Amazon SQS: An identifier that you get when you receive a message from the queue. This identifier is required to delete a message from the queue or when changing a message’s visibility timeout.

Question 7

receiver

Answer 7

The entity that consists of the network systems, software, and policies that manage email delivery for a recipient.

Question 8

recipient

Answer 8

Amazon Simple Email Service (Amazon SES): The person or entity receiving an email message. For example, a person named in the “To” field of a message.

Question 9

Redis

Answer 9

A fast, open source, in-memory key-value data structure store. Redis comes with a set of versatile in-memory data structures with which you can easily create a variety of custom applications.

Question 10

reference

Answer 10

A means of inserting a property from one AWS resource into another. For example, you could insert an Amazon EC2 security group property into an Amazon RDS resource.

Question 11

region

Answer 11

A named set of AWS resources in the same geographical area. A region comprises at least two Availability Zones.

Question 12

regression model

Answer 12

Amazon Machine Learning: Preformatted instructions for common data transformations that fine-tune machine learning model performance.

Question 13

regression model

Answer 13

A type of machine learning model that predicts a numeric value, such as the exact purchase price of a house.

Question 14

regularization

Answer 14

A machine learning (ML) parameter that you can tune to obtain higher-quality ML models. Regularization helps prevent ML models from memorizing training data examples instead of learning how to generalize the patterns it sees (called overfitting). When training data is overfitted, the ML model performs well on the training data but does not perform well on the evaluation data or on new data.

Question 15

replacement environment

Answer 15

The instances in a deployment group after the AWS CodeDeploy blue/green deployment.

Question 16

replica shard

Answer 16

See shard.

Question 17

reply path

Answer 17

The email address to which an email reply is sent. This is different from the return path.

Question 18

representational state transfer

Answer 18

See REST.

Question 19

reputation

Answer 19

1. An Amazon SES metric, based on factors that might include bounces, complaints, and other metrics, regarding whether or not a customer is sending high-quality email.
2. A measure of confidence, as judged by an internet service provider or other entity that an IP address that they are receiving email from is not the source of spam.

Question 20

requester

Answer 20

The person (or application) that sends a request to AWS to perform a specific action. When AWS receives a request, it first evaluates the requester’s permissions to determine whether the requester is allowed to perform the request action (if applicable, for the requested resource).

Question 21

Requester Pays

Answer 21

An Amazon S3 feature that allows a bucket owner to specify that anyone who requests access to objects in a particular bucket must pay the data transfer and request costs.

Question 22

reservation

Answer 22

A collection of EC2 instances started as part of the same launch request. Not to be confused with a Reserved Instance.

Question 23

Reserved Instance

Answer 23

A pricing option for EC2 instances that discounts the on-demand usage charge for instances that meet the specified parameters. Customers pay for the entire term of the instance, regardless of how they use it.

Question 24

Reserved Instance Marketplace

Answer 24

An online exchange that matches sellers who have reserved capacity that they no longer need with buyers who are looking to purchase additional capacity. Reserved Instances that you purchase from third-party sellers have less than a full standard term remaining and can be sold at different upfront prices. The usage or reoccurring fees remain the same as the fees set when the Reserved Instances were originally purchased. Full standard terms for Reserved Instances available from AWS run for one year or three years.

Question 25

resource

Answer 25

An entity that users can work with in AWS, such as an EC2 instance, an Amazon DynamoDB table, an Amazon S3 bucket, an IAM user, an AWS OpsWorks stack, and so on.

Question 26

resource property

Answer 26

A value required when including an AWS resource in an AWS CloudFormation stack. Each resource may have one or more properties associated with it. For example, an AWS::EC2::Instance resource may have a UserData property. In an AWS CloudFormation template, resources must declare a properties section, even if the resource has no properties.

Question 27

resource record

Answer 27

Also called resource record set. The fundamental information elements in the Domain Name System (DNS).

See Also Domain Name System in Wikipedia.

Question 28

REST

Answer 28

Representational state transfer. A simple stateless architecture that generally runs over HTTPS/TLS. REST emphasizes that resources have unique and hierarchical identifiers (URIs), are represented by common media types (HTML, XML, JSON, and so on), and that operations on the resources are either predefined or discoverable within the media type. In practice, this generally results in a limited number of operations.

See Also Query.

See Also WSDL.

See Also SOAP.

Question 29

RESTful web service

Answer 29

Also known as RESTful API. A web service that follows REST architectural constraints. The API operations must use HTTP methods explicitly; expose hierarchical URIs; and transfer either XML, JSON, or both.

Question 30

HTTP-Query

Answer 30

See Query.

Question 31

return enabled

Answer 31

Amazon CloudSearch: An index field option that enables the field’s values to be returned in the search results.

Question 32

return path

Answer 32

The email address to which bounced email is returned. The return path is specified in the header of the original email. This is different from the reply path.

Question 33

revision

Answer 33

AWS CodePipeline: A change made to a source that is configured in a source action, such as a pushed commit to a GitHub repository or an update to a file in a versioned Amazon S3 bucket.

Question 34

role

Answer 34

A tool for giving temporary access to AWS resources in your AWS account.

Question 35

rollback

Answer 35

A return to a previous state that follows the failure to create an object, such as AWS CloudFormation stack. All resources associated with the failure are deleted during the rollback. For AWS CloudFormation, you can override this behavior using the –disable-rollback option on the command line.

Question 36

root

Answer 36

AWS Organizations: A parent container for the accounts in your organization. If you apply a service control policy to the root, it applies to every organizational unit and account in the organization.

Question 37

root credentials

Answer 37

Authentication information associated with the AWS account owner.

Question 38

root device volume

Answer 38

A volume that contains the image used to boot the instance (also known as a root device). If you launched the instance from an AMI backed by instance store, this is an instance store volume created from a template stored in Amazon S3. If you launched the instance from an AMI backed by Amazon EBS, this is an Amazon EBS volume created from an Amazon EBS snapshot.

Question 39

route table

Answer 39

A set of routing rules that controls the traffic leaving any subnet that is associated with the route table. You can associate multiple subnets with a single route table, but a subnet can be associated with only one route table at a time.

Question 40

row identifier

Answer 40

row ID.Amazon Machine Learning: An attribute in the input data that you can include in the evaluation or prediction output to make it easier to associate a prediction with an observation.

Question 41

rule

Answer 41

AWS WAF: A set of conditions that AWS WAF searches for in web requests to AWS resources such as Amazon CloudFront distributions. You add rules to a web ACL, and then specify whether you want to allow or block web requests based on each rule.