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Amazon AWS-Solutions-Associate Exam Syllabus Topics:

Section	Weight	Objectives
Design High-Performing Architectures	24%	- Determine high-performing and scalable storage solutions 1. Block storage 2. Object storage 3. File storage - Design high-performing compute solutions 1. Serverless architectures 2. Compute service selection 3. Performance optimization - Determine high-performing database and network architectures 1. Database service selection 2. Caching strategies 3. Network performance optimization
Design Secure Architectures	30%	- Design secure access to AWS resources 1. Least privilege access 2. Authentication and authorization mechanisms 3. Identity and access management - Determine appropriate data security controls 1. Data protection at rest 2. Data protection in transit 3. Key management - Design secure workloads and applications 1. Network security controls 2. Data encryption 3. Secure application integration
Design Resilient Architectures	26%	- Design highly available and fault-tolerant architectures 1. Backup and recovery 2. Multi-AZ and multi-region strategies 3. Disaster recovery planning - Design scalable and loosely coupled architectures 1. Event-driven architectures 2. Decoupled services 3. Elastic scaling
Design Cost-Optimized Architectures	20%	- Design cost-optimized storage solutions 1. Lifecycle management 2. Storage class selection - Design cost-optimized compute, database, and network solutions 1. Resource right-sizing 2. Pricing models 3. Cost monitoring and optimization

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Amazon AWS Certified Solutions Architect - Associate (SAA-C03) Sample Questions (Q529-Q534):

NEW QUESTION # 529
A company deployed a serverless application that uses Amazon DynamoDB as a database layer The application has experienced a large increase in users. The company wants to improve database response time from milliseconds to microseconds and to cache requests to the database.
Which solution will meet these requirements with the LEAST operational overhead?

A. Use Amazon ElastiCache for Redis.
B. Migrate the database to Amazon RDS.
C. Use DynamoDB Accelerator (DAX).
D. Migrate the database to Amazon Redshift.

Answer: C

Explanation:
DynamoDB Accelerator (DAX) is a fully managed, highly available caching service built for Amazon DynamoDB. DAX delivers up to a 10 times performance improvement-from milliseconds to microseconds- even at millions of requests per second. DAX does all the heavy lifting required to add in-memory acceleration to your DynamoDB tables, without requiring developers to manage cache invalidation, data population, or cluster management. Now you can focus on building great applications for your customers without worrying about performance at scale. You do not need to modify application logic because DAX is compatible with existing DynamoDB API calls. This solution will meet the requirements with the least operational overhead, as it does not require any code development or manual intervention.
References:
1 provides an overview of Amazon DynamoDB Accelerator (DAX) and its benefits.
2 explains how to use DAX with DynamoDB for in-memory acceleration.

NEW QUESTION # 530
A company must follow strict regulations for the management of data encryption keys. The company manages its own key externally and imports the key into AWS Key Management Service (AWS KMS). The company must control the imported key material and must rotate the key material on a regular schedule.
A solutions architect needs to import the key material into AWS KMS and rotate the key without interrupting applications that use the key.
Which solution will meet these requirements?

A. Schedule the existing AWS KMS key for deletion. Create a new KMS key that has new key material.
B. Enable automatic key rotation for the existing AWS KMS key.
C. Import new key material into the existing AWS KMS key. Set an expiration time for the old key material.
D. Create a new AWS KMS key that has the same key ID as the existing key. Import new key material into the key.

Answer: C

Explanation:
When using imported key material with AWS KMS, you maintain control over the key lifecycle. AWS KMS allows you to import new key material into an existing KMS key (of type "external" or "imported"), thus rotating the key material without changing the key ID or ARNs. This enables applications to continue using the same key for cryptographic operations without disruption.
You can also set an expiration time for the old key material, after which AWS KMS deletes the old material and requires new key material to be imported, enforcing regular rotation per your compliance requirements.
AWS Documentation Extract:
"To rotate imported key material, you can re-import new key material into the same KMS key. This retains the same key ID and ARNs so applications are unaffected. You can set an expiration time for imported key material and replace it as needed, ensuring compliance with your rotation policy." (Source: AWS Key Management Service Developer Guide, Importing Key Material, Rotating Key Material) Other options:
A: You cannot create a new KMS key with the same key ID as an existing one.
B: Deleting and recreating the key disrupts application access because the key ID changes.
D: Automatic rotation is only available for AWS-managed keys, not for imported key material.
Reference: AWS Certified Solutions Architect - Official Study Guide, KMS and Key Rotation Section.

NEW QUESTION # 531
A company has a serverless website with millions of objects in an Amazon S3 bucket. The company uses the S3 bucket as the origin for an Amazon CloudFront distribution. The company did not set encryption on the S3 bucket before the objects were loaded. A solutions architect needs to enable encryption for all existing objects and for all objects that are added to the S3 bucket in the future.
Which solution will meet these requirements with the LEAST amount of effort?

A. Create a new encryption key by using AWS Key Management Service (AWS KMS). Change the settings on the S3 bucket to use server-side encryption with AWS KMS managed encryption keys (SSE- KMS). Turn on versioning for the S3 bucket.
B. Turn on the default encryption settings for the S3 bucket. Use the S3 Inventory feature to create a .csv file that lists the unencrypted objects. Run an S3 Batch Operations job that uses the copy command to encrypt those objects.
C. Navigate to Amazon S3 in the AWS Management Console. Browse the S3 bucket's objects. Sort by the encryption field. Select each unencrypted object. Use the Modify button to apply default encryption settings to every unencrypted object in the S3 bucket.
D. Create a new S3 bucket. Turn on the default encryption settings for the new S3 bucket. Download all existing objects to temporary local storage. Upload the objects to the new S3 bucket.

Answer: B

Explanation:
https://spin.atomicobject.com/2020/09/15/aws-s3-encrypt-existing-objects/

NEW QUESTION # 532
A company that develops web applications has launched hundreds of Application Load Balancers (ALBs) in multiple Regions. The company wants to create an allow list (or the IPs of all the load balancers on its firewall device. A solutions architect is looking for a one-time, highly available solution to address this request, which will also help reduce the number of IPs that need to be allowed by the firewall.
What should the solutions architect recommend to meet these requirements?

A. Create a AWS Lambda function to keep track of the IPs for all the ALBs in different Regions Keep refreshing this list.
B. Launch AWS Global Accelerator and create endpoints for all the Regions. Register all the ALBs in different Regions to the corresponding endpoints
C. Set up a Network Load Balancer (NLB) with Elastic IPs. Register the private IPs of all the ALBs as targets to this NLB.
D. Set up an Amazon EC2 instance, assign an Elastic IP to this EC2 instance, and configure the instance as a proxy to forward traffic to all the ALBs.

Answer: B

NEW QUESTION # 533
An image-processing company has a web application that users use to upload images. The application uploads the images into an Amazon S3 bucket. The company has set up S3 event notifications to publish the object creation events to an Amazon Simple Queue Service (Amazon SQS) standard queue. The SQS queue serves as the event source for an AWS Lambda function that processes the images and sends the results to users through email.
Users report that they are receiving multiple email messages for every uploaded image. A solutions architect determines that SQS messages are invoking the Lambda function more than once, resulting in multiple email messages.
What should the solutions architect do to resolve this issue with the LEAST operational overhead?

A. Set up long polling in the SQS queue by increasing the ReceiveMessage wait time to 30 seconds.
B. Change the SQS standard queue to an SQS FIFO queue. Use the message deduplication ID to discard duplicate messages.
C. Modify the Lambda function to delete each message from the SQS queue immediately after the message is read before processing.
D. Increase the visibility timeout in the SQS queue to a value that is greater than the total of the function timeout and the batch window timeout.

Answer: D

NEW QUESTION # 534
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