Amazon DVA-C01 Practice Test - Questions Answers, Page 4

https://aws.amazon.com/sns/faqs/Q: What are the different delivery formats/transports for receiving notifications? In order for customers to have broad flexibility of delivery mechanisms, Amazon SNS supports notifications over multiple transport protocols. Customers can select one the following transports as part of the subscription requests:

“HTTP”, “HTTPS” – Subscribers specify a URL as part of the subscription registration; notifications will be delivered through an HTTP POST to the specified URL. ”Email”, “Email-JSON” – Messages are sent to registered addresses as email. Email-JSON sends notifications as a JSON object, while Email sends text-based email. “SQS” – Users can specify an SQS standard queue as the endpoint; Amazon SNS will enqueue a notification message to the specified queue (which subscribers can then process using SQS APIs such as ReceiveMessage, DeleteMessage, etc.). Note that FIFO queues are not currently supported.

“SMS” – Messages are sent to registered phone numbers as SMS text messages.

https://docs.aws.amazon.com/sns/latest/api/API_Publish.htmlMessageMessageAttributesMessageStructurePhoneNumberSubjectTargetArnTopicArn

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instancedata-data-categories.htmlData: local-hostname Descriptions: The private IPv4 DNS hostname of the instance. In cases where multiple network interfaces are present, this refers to the eth0 device (the device for which the device number is 0). Data: public-ipv4 Descriptions: The public IPv4 address. If an Elastic IP address is associated with the instance, the value returned is the Elastic IP address.

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/usingsharedamis-finding.html

https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeImages.htmlDescribes the specified images (AMIs, AKIs, and ARIs) available to you or all of the images available to you.

Physical and Environmental Security

AWS’s data centers are state of the art, utilizing innovative architectural and engineering approaches. Amazon has many years of experience in designing, constructing, and operating large-scale data centers. This experience has been applied to the AWS platform and infrastructure. AWS data centers are housed in nondescript facilities. Physical access is strictly controlled both at the perimeter and at building ingress points by professional security staff utilizing video surveillance, intrusion detection systems, and other electronic means. Authorized staff must pass two-factor authentication a minimum of two times to access data center floors. All visitors and contractors are required to present identification and are signed in and continually escorted by authorized staff. Storage Decommissioning

When a storage device has reached the end of its useful life, AWS procedures include a decommissioning process that is designed to prevent customer data from being exposed to unauthorized individuals. AWS uses the techniques detailed in DoD 5220.22-M (National Industrial Security Program Operating Manual) or NIST 800-88 (Guidelines for Media Sanitization) to destroy data as part of the decommissioning process. All decommissioned magnetic storage devices are degaussed and physically destroyed in accordance with industry-standard practices.

https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-query-scan.htmlBecause a Scan operation reads an entire page (by default, 1 MB), you can reduce the impact of thescan operation by setting a smaller page size. The Scan operation provides a Limit parameter thatyou can use to set the page size for your request. Each Scan or Query request that has a smaller pagesize uses fewer read operations and creates a "pause" between each request. For example, if eachitem is 4 KB and you set the page size to 40 items, then a Query request would consume only 40strongly consistent read operations or 20 eventually consistent read operations. A larger number ofsmaller Scan or Query operations would allow your other critical requests to succeed withoutthrottling.

https://docs.aws.amazon.com/AmazonS3/latest/dev/cors.html