EXAMS AWS CERTIFIED DEVELOPER - ASOCIATE 24

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You are building an online store on AWS that uses SQS to process your customer orders.

Your backend system needs those messages in the same sequence the customer orders have been put in.

How can you achieve that?

Amazon SQS is engineered to always be available and deliver messages. One of the resulting tradeoffs is that SQS does not guarantee first in, first out delivery of messages. For many distributed applications, each message can stand on its own, and as long as all messages are delivered, the order is not important. If your system requires that order be preserved, you can place sequencing information in each message, so that you can reorder the messages when the queue returns them.

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When writing a Lambda function, what is the benefit of instantiating AWSclients outside the scope of the handler?

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What is the maximum number of tags that a user can assign to an EC2 instance?

To help manage EC2 instances as well as their usage in a better way, the user can tag the instances. The tags are metadata assigned by the user which consists of a key and a value. One resource can have a maximum of 10 tags. http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Using_Tags.html

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Which of the following solutions is not supported by DynamoDB:

In DynamoDB, a secondary index is a data structure that contains a subset of attributes from a table, along with an alternate key to support Query operations. DynamoDB supports the following two types of secondary indexes: Local secondary index is an index that has the same hash key as the table, but a different range key. A local secondary index is "local" in the sense that every partition of a local secondary index is scoped to a table partition that has the same hash key. Global secondary index is an index with a hash and range key that can be different from those on the table. A global secondary index is considered "global" because queries on the index can span all of the data in a table, across all partitions. http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html

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A user wants to access RDS from an EC2 instance using IP addresses.

Both RDS and EC2 are in the same region, but different AZs.

Which of the below mentioned options help configure that the instance is accessed faster?

If the user is going to specify an IP range in RDS security group, AWS recommends using the private IP address of the Amazon EC2 instance. This provides a more direct network route from the Amazon EC2 instance to the Amazon RDS DB instance, and does not incur network charges for the data sent outside of the Amazon network.

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A user has configured a bucket S3 to host a static website. What difference will there be when static website hosting is enabled?

To host a static website, the user needs to configure an Amazon S3 bucket for website hosting and then upload the website contents to the bucket. The website is then available at the region- specific website endpoint of the bucket. http://docs.aws.amazon.com/AmazonS3/latest/dev/WebsiteHosting.html

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AWS Elastic Beanstalk will change the health status of a web server environment tier to gray color when:

AWS Elastic Beanstalk will change the health status of a web server environment tier to gray color when your application's health status is unknown (because status is reported when the application is not in the ready state). http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.healthstatus.html

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Which of the following groups is AWS Elastic Beanstalk best suited for?

AWS Elastic Beanstalk is best suited for those groups who want to deploy and manage their applications within minutes in the AWS cloud. As a bonus, you don't even need experience with cloud computing to get started. https://aws.amazon.com/elasticbeanstalk/faqs/

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