Amazon BDS-C00 Quiz 2 Topic 5 Questions 6-10

Question: 1

A user is planning to host a mobile game on EC2 which sends notifications to active users on either high score or the addition of new features. The user should get this notification when he is online on his mobile device. Which of the below mentioned AWS services can help achieve this functionality?

AAWS Simple Notification Service

BAWS Simple Queue Service

CAWS Mobile Communication Service

DAWS Simple Email Service

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Question: 2

An online retailer is using Amazon DynamoDB to store data relate to customer transactions. The items in the table contain several string attributes describing the transaction as well as a JSON attribute containing the shopping cart and other details corresponding to the transactions. Average item size is ~250KB, most of which is associated with the JSON attribute. The average generates ~3GB of data per month.

Customers access the table to display their transaction history and review transaction details as needed. Ninety percent of queries against the table are executed when building the transaction history view, with the other 10% retrieving transaction details. The table is partitioned on CustomerID and sorted on transaction data.

The client has very high read capacity provisioned for the table and experiences very even utilization, but complains about the cost of Amazon DynamoDB compared to other NoSQL solutions.

Which strategy will reduce the cost associated with the client's read queries while not degrading quality?

AModify all database calls to use eventually consistent reads and advise customers that transaction history may be one second out-of-date.

BChange the primary table to partition on TransactionID, create a GSI partitioned on customer and sorted on date, project small attributes into GSI and then query GSI for summary data and the primary table for JSON details.

CVertically partition the table, store base attributes on the primary table and create a foreign key reference to a secondary table containing the JSON data. Query the primary table for summary data and the secondary table for JSON details.

DCreate an LSI sorted on date project the JSON attribute into the index and then query the primary table for summary data and the LSI for JSON details

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Question: 3

Amazon S3 doesn't automatically give a user who creates _____ permission to perform other actions on that bucket or object.

Aa file

Ba bucket or object

Ca bucket or file

Da object or file

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Question: 4

Can the string value of 'Key' be prefixed with laws?

ANo

BOnly for EC2 not S3

CYes

DOnly for S3 not EC

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Question: 5

It is advised that you watch the Amazon CloudWatch "_____" metric (available via the AWS Management Console or Amazon Cloud Watch APIs) carefully and recreate the Read Replica should it fall behind due to replication errors.

AWrite Lag

BRead Replica

CReplica Lag

DSingle Replica

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Amazon BDS-C00 Quiz:2 Topic:5 Questions:6-10