E Flashcards

Question

ETL

Answer 1

See extract, transform, and load (ETL).

Answer 2

Amazon Machine Learning: The process of measuring the predictive performance of a machine learning (ML) model. Also a machine learning object that stores the details and result of an ML model evaluation.

Answer 3

The data that Amazon Machine Learning uses to evaluate the predictive accuracy of a machine learning model.

Answer 4

The method through which AWS products achieve high availability, which involves replicating data across multiple servers in Amazon's data centers. When data is written or updated and Success is returned, all copies of the data are updated. However, it takes time for the data to propagate to all storage locations. The data will eventually be consistent, but an immediate read might not show the change. Consistency is usually reached within seconds. See Also data consistency. See Also eventually consistent read. See Also strongly consistent read.

Answer 5

A read process that returns data from only one region and might not show the most recent write information. However, if you repeat your read request after a short time, the response should eventually return the latest data. See Also data consistency. See Also eventual consistency. See Also strongly consistent read.

Answer 6

The deletion by CloudFront of an object from an edge location before its expiration time. If an object in an edge location isn't frequently requested, CloudFront might evict the object (remove the object before its expiration date) to make room for objects that are more popular.

Answer 7

(EiB) A contraction of exa binary byte, an exbibyte is 2^60 or 1,152,921,504,606,846,976 bytes. An exabyte (EB) is 10^18 or 1,000,000,000,000,000,000 bytes. 1,024 EiB is a zebibyte.

Answer 8

For CloudFront caching, the time when CloudFront stops responding to user requests with an object. If you don't use headers or CloudFront distribution settings to specify how long you want objects to stay in an edge location, the objects expire after 24 hours. The next time a user requests an object that has expired, CloudFront forwards the request to the origin.

Answer 9

An Amazon Machine Image (AMI) launch permission granted to a specific AWS account.

Answer 10

A strategy that incrementally increases the wait between retry attempts in order to reduce the load on the system and increase the likelihood that repeated requests will succeed. For example, client applications might wait up to 400 milliseconds before attempting the first retry, up to 1600 milliseconds before the second, up to 6400 milliseconds (6.4 seconds) before the third, and so on.

Answer 11

Amazon CloudSearch: A numeric expression that you can use to control how search hits are sorted. You can construct Amazon CloudSearch expressions using numeric fields, other rank expressions, a document's default relevance score, and standard numeric operators and functions. When you use the sort option to specify an expression in a search request, the expression is evaluated for each search hit and the hits are listed according to their expression values.

Answer 12

A process that is used to integrate data from multiple sources. Data is collected from sources (extract), converted to an appropriate format (transform), and written to a target data store (load) for purposes of analysis and querying. ETL tools combine these three functions to consolidate and move data from one environment to another. AWS Glue is a fully managed ETL service for discovering and organizing data, transforming it, and making it available for search and analytics.