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DVA-C01 Examcollection Dumps, Frequent DVA-C01 Updates

DVA-C01 Examcollection Dumps, Frequent DVA-C01 Updates

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Amazon AWS Certified Developer Associate Exam Sample Questions (Q492-Q497):

NEW QUESTION # 492
You attempt to store an object in the US-STANDARD region in Amazon S3, and receive a confirmation that it has been successfully stored. You then immediately make another API call and attempt to read this object. S3 tells you that the object does not exist What could explain this behavior?

  • A. US-STANDARD uses eventual consistency and it can take time for an object to be readable in a bucket
  • B. You exceeded the bucket object limit, and once this limit is raised the object will be visible.
  • C. Objects in Amazon S3 do not become visible until they are replicated to a second region.
  • D. US-STANDARD imposes a 1 second delay before new objects are readable.

Answer: A

Explanation:
Explanation
https://acloud.guru/forums/aws-certified-developer-associate/discussion/-KGngHzVQ03OpeAA9jSP/i-cant-answ
https://acloud.guru/forums/aws-certified-developer-associate/discussion/-K5WKXRAlJdOu58GREF_/s3-questio

NEW QUESTION # 493
What item operation allows the retrieval of multiple items from a DynamoDB table in a single API call?

  • A. BatchGetItem
  • B. GetItem
  • C. GetItemRange
  • D. GetMultipleItems

Answer: A

Explanation:
Explanation
https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_BatchGetItem.html

NEW QUESTION # 494
A developer is provided with an HTTPS clone URL for an AWS CodeCommit repository.
What needs to be configured before cloning this repository?

  • A. Set up the Git credential helper to use an AWS credential profile, and enable the helper to send the path to the repositories.
  • B. Use AWS certificate manager to provision public and private SSL/TLS certificates.
  • C. Use AWS KMS to set up public and private keys for use with CodeCommit.
  • D. Generate encryption keys using AWS CloudHSM, then export the key for use with AWS CodeCommit.

Answer: D

NEW QUESTION # 495
A developer is testing a new file storage application that uses an Amazon CloudFront distribution to serve content from an Amazon S3 bucket. The distribution accesses the S3 bucket by using an origin access identity (OAI). The S3 bucket’s permissions explicitly deny access to all other users.
The application prompts users to authenticate on a login page and then uses signed cookies to allow users to access their personal storage directories. The developer has configured the distribution to use its default cache behavior with restricted viewer access and has set the origin to point to the S3 bucket. However, when the developer tries to navigate to the login page, the developer receives a 403 Forbidden error.
The developer needs to implement a solution to allow unauthenticated access to the login page. The solution also must keep all private content secure.
Which solution will meet these requirements?

  • A. Add a bucket policy to the S3 bucket to allow read access. Set the resource on the policy to the Amazon Resource Name (ARN) of the login page object in the S3 bucket. Add a CloudFront function to the default cache behavior to redirect unauthorized requests to the login page’s S3 URI.
  • B. Add a second origin as a failover origin to the default cache behavior. Point the failover origin to the S3 bucket. Set the path pattern for the primary origin to * and make viewer access restricted. Set the path pattern for the failover origin to the path of the login page, and make viewer access unrestricted.
  • C. Add a second cache behavior to the distribution with the same origin as the default cache behavior. Set the path pattern for the second cache behavior to *, and make viewer access restricted. Change the default cache behavior’s path pattern to the path of the login page, and make viewer access unrestricted.
  • D. Add a second cache behavior to the distribution with the same origin as the default cache behavior. Set the path pattern for the second cache behavior to the path of the login page, and make viewer access unrestricted. Keep the default cache behavior’s settings unchanged.

Answer: C

Explanation:
Adding a second cache behavior to the distribution with the same origin as the default cache behavior and setting the path pattern to * will allow access to all files in the S3 bucket. Changing the default cache behavior’s path pattern to the path of the login page and making viewer access unrestricted will allow unauthenticated users to access the login page, while keeping all other private content secure.

NEW QUESTION # 496
When using a large Scan operation in DynamoDB, what technique can be used to minimize the impact of a scan on a table’s provisioned throughput?

  • A. Use parallel scans
  • B. Define a range index on the table
  • C. Set a smaller page size for the scan
  • D. Prewarm the table by updating all items

Answer: C

Explanation:
Reference:
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-query-scan.html Because a Scan operation reads an entire page (by default, 1 MB), you can reduce the impact of the scan operation by setting a smaller page size. The Scan operation provides a Limit parameter that you can use to set the page size for your request. Each Scan or Query request that has a smaller page size uses fewer read operations and creates a “pause” between each request. For example, if each item is 4 KB and you set the page size to 40 items, then a Query request would consume only 40 strongly consistent read operations or 20 eventually consistent read operations. A larger number of smaller Scan or Query operations would allow your other critical requests to succeed without throttling.

NEW QUESTION # 497
……

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