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DVA-C01參考資料 -新版DVA-C01題庫上線 & AWS Certified Developer Associate Exam - Royalholidayclubbed
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Amazon AWS Certified Associate DVA-C01 這樣討得上司的喜歡，還不如用實力說話。
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我們都知道在現在這個競爭激烈的IT行業，擁有一些IT相關認證證書是很有必要的。IT認證證書是對你的IT專業知識和經驗的最好證明。在IT行業中Amazon DVA-C01參考資料 認證考試是一個很重要的認證考試，但是通過Amazon DVA-C01參考資料 認證考試是有一定難度的。
你也會很快很順利的通過Amazon Amazon DVA-C01參考資料的認證考試。
Amazon DVA-C01參考資料 認證考試已經成為了IT行業中很熱門的一個考試，但是為了通過考試需要花很多時間和精力掌握好相關專業知識。在這個時間很寶貴的時代，時間就是金錢。Royalholidayclubbed為Amazon DVA-C01參考資料 認證考試提供的培訓方案只需要20個小時左右的時間就能幫你鞏固好相關專業知識，讓你為第一次參加的Amazon DVA-C01參考資料 認證考試做好充分的準備。
Royalholidayclubbed是一個對Amazon DVA-C01參考資料 認證考試提供針對性培訓的網站。Royalholidayclubbed也是一個不僅能使你的專業知識得到提升，而且能使你一次性通過Amazon DVA-C01參考資料 認證考試的網站。
DVA-C01 PDF DEMO:
QUESTION NO: 1
An AWS Lambda function must access an external site by using a regularly rotated user name and password.
These items must be kept securely and cannot be stored in the function code.
What combination of AWS services can be used to accomplish this? (Choose two.)
A. AWS KMS
B. AWS Systems Manager Parameter Store
C. Amazon GuardDuty
D. AWS Trusted Advisor
E. AWS Certificate Manager (ACM)
Answer: A,B
QUESTION NO: 2
Company D is running their corporate website on Amazon S3 accessed from
http//www.companyd.com.
Their marketing team has published new web fonts to a separate S3 bucket accessed by the S3 endpoint https://s3-us-west-1.amazonaws.com/cdfonts.
While testing the new web fonts, Company D recognized the web fonts are being blocked by the browser.
What should Company D do to prevent the web fonts from being blocked by the browser?
A. Enable versioning on the cdfonts bucket for each web font
B. Configure the cdfonts bucket to allow cross-origin requests by creating a CORS configuration
C. Create a policy on the cdfonts bucket to enable access to everyone
D. Add the Content-MD5 header to the request for webfonts in the cdfonts bucket from the website
Answer: B
QUESTION NO: 3
A Developer created a dashboard for an application using Amazon API Gateway, Amazon S3,
AWS Lambda, and Amazon RDS. The Developer needs an authentication mechanism allowing a user to sign in and view the dashboard. It must be accessible from mobile applications, desktops, and tablets, and must remember user preferences across platforms.
Which AWS service should the Developer use to support this authentication scenario?
A. AWS Directory Service
B. AWS KMS
C. Amazon Cognito
D. Amazon IAM
Answer: C
QUESTION NO: 4
Which of the following services are included at no additional cost with the use of the AWS platform? Choose 2 answers
A. Auto Scaling
B. Elastic Compute Cloud
C. CloudFormation
D. Elastic Load Balancing
E. Simple Storage Service
F. Simple Workflow Service
Answer: A,C
QUESTION NO: 5
A Developer has implemented a Lambda function that needs to add new customers to an RDS database that is expected to run hundreds of times per hour. The Lambda function is configured to use 512MB of RAM and is based on the following pseudo code:
After testing the Lambda function, the Developer notices that the Lambda execution time is much longer than expected. What should the Developer do to improve performance?
A. Move the database connection and close statement out of the handler. Place the connection in the global space.
B. Replace RDS wit Amazon DynamoDB to implement control over the number of writes per second.
C. Increase the amount of RAM allocated to the Lambda function, which will increase the number of threads the Lambda can use.
D. Increase the size of the RDS database to allow for an increased number of database connections each hour.
Answer: A
Explanation
Refer AWS documentation - Lambda Best Practices
Take advantage of Execution Context reuse to improve the performance of your function. Make sure any externalized configuration or dependencies that your code retrieves are stored and referenced locally after initial execution. Limit the re-initialization of variables/objects on every invocation.
Instead use static initialization/constructor, global/static variables and singletons. Keep alive and reuse connections (HTTP, database, etc.) that were established during a previous invocation.
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Updated: May 28, 2022
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