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NEW QUESTION 30
Amazon S3 has the following structure: S3://BUCKET/FOLDERNAME/FILENAME.zip Which S3 best practice would optimize performance with thousands of PUT request each second to a single bucket?- A. Prefix file names with random hex hashes; for example, s3://BUCKET/FOLDERNAME/23a6- FILENAME.zip
- B. Prefix file names with timestamps; for example, s3://BUCKET/FOLDERNAME/2013-26-05-15-00-00- FILENAME.zip
- C. Prefix folder names with user id; for example, s3://BUCKET/2013-FOLDERNAME/FILENAME.zip
- D. Prefix folder names with random hex hashes; for example, s3://BUCKET/23a6-FOLDERNAME/
Answer: D
Explanation:
FILENAME.zip
NEW QUESTION 31
An e-commerce site allows returning users to log in to display customized web pages. The workflow is shown in the image below:
An application is running on EC2 instances. Amazon RDS is used for the database that stores user accounts and preferences. The website freezes or is slow to load while waiting for the login step to complete. The remaining components of the site are well-optimized.
Which of the following techniques will resolve this issue? (Select Two.)- A. Call the database asynchronously so the code can continue executing.
- B. Batch login requests from hundreds of users together as a single read request to the database.
- C. Use Amazon Application Load Balancer to load balance the traffic to the website.
- D. Implement the user login page as an asynchronous Lambda function.
- E. Use Amazon ElastiCache for MemCached to cache user data.
Answer: A,E
Explanation:
Explanation
https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/making-asynchronous-calls.html
NEW QUESTION 32
A Developer executed a AWS CLI command and received the error shown below:
What action should the Developer perform to make this error human-readable?- A. Use the AWS STS decode-authorization-message API to decode the message.
- B. Make a call to AWS KMS to decode the message.
- C. Use an open source decoding library to decode the message.
- D. Use the AWS IAM decode-authorization-message API to decode this message.
Answer: A
Explanation:
https://docs.aws.amazon.com/cli/latest/reference/sts/decode-authorization-message.html
The message is encoded because the details of the authorization status can constitute privileged information that the user who requested the operation should not see. To decode an authorization status message, a user must be granted permissions via an IAM policy to request the DecodeAuthorizationMessage (sts:DecodeAuthorizationMessage ) action.
NEW QUESTION 33
A Developer has created an S3 bucket s3://mycoolapp and has enabled server across logging that points to the folder s3://mycoolapp/logs. The Developer moved 100 KB of Cascading Style Sheets (CSS) documents to the folder s3://mycoolapp/css, and then stopped work. When the developer came back a few days later, the bucket was 50 GB.
What is the MOST likely cause of this situation?- A. The CSS files were not compressed and S3 versioning was enabled.
- B. S3 replication was enabled on the bucket.
- C. Logging into the same bucket caused exponential log growth.
- D. An S3 lifecycle policy has moved the entire CSS file to S3 Infrequent Access.
Answer: C
Explanation:
Explanation
Refer AWS documentation - S3 Server logs
To turn on log delivery, you provide the following logging configuration information:- The name of the target bucket where you want Amazon S3 to save the access logs as objects. You can have logs delivered to any bucket that you own that is in the same Region as the source bucket, including the source bucket itself.We recommend that you save access logs in a different bucket so that you can easily manage the logs. If you choose to save access logs in the source bucket, we recommend
- that you specify a prefix for all log object keys so that the object names begin with a common string and the log objects are easier to identify.When your source bucket and target bucket are the same bucket, additional logs are created for the logs that are written to the bucket. This behavior might not be ideal for your use case because it could result in a small increase in your storage billing. In addition, the extra logs about logs might make it harder to find the log that you're looking for.
NEW QUESTION 34
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