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Amazon SAA-C03 자격증 시험은 아마존 웹 서비스(AWS) 클라우드에서 확장 가능하고 내결함성이 있는 고가용성 시스템의 디자인과 배포에 능숙해지고자 하는 개인들을 위해 설계되었습니다. 이 자격증은 솔루션 아키텍트, 시스템 관리자 및 개발자들이 AWS 인프라, 서비스 및 최상의 실천 방법에 대한 지식과 전문성을 검증하고자 하는 경우 이상적입니다. SAA-C03 시험은 이전 SAA-C02 자격증 시험의 업데이트 버전이며 클라우드 컴퓨팅 산업에서 가장 수요가 높은 자격증 중 하나로 간주됩니다.
SAA-C03 시험은 EC2, S3, RDS, VPC와 같은 AWS 코어 서비스뿐만 아니라 로드 밸런싱, 오토스케일링, 재해 복구와 같은 고급 개념 등 폭넓은 주제를 다룹니다. 후보자들은 AWS 인프라에 대한 깊은 이해를 가져야하며 AWS에서 확장 가능하고 내결함성이 있는 시스템을 설계하고 배포할 수 있어야합니다.
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Amazon SAA-C03 인증 시험은 AWS (Amazon Web Services)와 함께 일하는 전문가의 기술과 지식을 검증하는 매우 인기있는 인증입니다. AWS에서 확장 가능하고 고도로 사용 가능한 고도로 사용 가능한 결함 방해 시스템을 설계하고 배포하는 경험이있는 개인을 위해 설계되었습니다. 인증 시험은 AWS에 대한 안전하고 강력한 응용 프로그램을 건축하고 배포하는 후보자의 능력을 테스트하며 AWS 핵심 서비스, 보안, 데이터베이스 기술 및 네트워킹을 포함한 다양한 주제를 다룹니다.
질문 # 191
[Design High-Performing Architectures]
A company hosts an application on AWS Lambda functions mat are invoked by an Amazon API Gateway API The Lambda functions save customer data to an Amazon Aurora MySQL databaseWhenever the company upgrades the database, the Lambda functions fail to establish database connections until the upgrade is complete The result is that customer data Is not recorded for some of the event A solutions architect needs to design a solution that stores customer data that is created during database upgrades Which solution will meet these requirements?
정답：D
설명：
https://www.learnaws.org/2020/12/13/aws-rds-proxy-deep-dive/
RDS proxy can improve application availability in such a situation by waiting for the new database instance to be functional and maintaining any requests received from the application during this time. The end result is that the application is more resilient to issues with the underlying database.
This will enable solution to hold data till the time DB comes back to normal. RDS proxy is to optimally utilize the connection between Lambda and DB. Lambda can open multipleconnection concurrently which can be taxing on DB compute resources, hence RDS proxy was introduced to manage and leverage these connections efficiently.
질문 # 192
A solutions architect is designing an asynchronous application to process credit card data validation requests for a bank. The application must be secure and be able to process each request at least once.
Which solution will meet these requirements MOST cost-effectively?
정답：A
설명：
The requirement issecure at-least-once processing, not exactly-once processing. Amazon SQSstandard queuesprovide at-least-once delivery, which matches the requirement and is generally more cost-effective than FIFO queues. When Lambda is configured with an encrypted SQS queue that usesSSE-KMS, AWS requires the Lambda execution role to have thekms:Decryptpermission so Lambda can poll and process messages successfully. FIFO queues add ordering and deduplication features that are not required here, so they are not the most economical choice. Option A is therefore the best fit because it combines the correct delivery model, queue encryption with AWS KMS, and the necessary IAM permission for Lambda.
질문 # 193
A company stores raw collected data in an Amazon S3 bucket. The data is used for several types of analytics on behalf of the company's customers. The type of analytics requested to determines the access pattern on the S3 objects.
The company cannot predict or control the access pattern. The company wants to reduce its S3 costs.
which solution will meet these requirements?
정답：D
설명：
Explanation
S3 Intelligent-Tiering is a storage class that automatically reduces storage costs by moving data to the most cost-effective access tier based on access frequency. It has two access tiers: frequent access and infrequent access. Data is stored in the frequent access tier by default, and moved to the infrequent access tier after 30 consecutive days of no access. If the data is accessed again, it is moved back to the frequent access tier1. By using S3 Lifecycle rules to transition objects from S3 Standard to S3 Intelligent-Tiering, the solution can reduce S3 costs for data with unknown or changing access patterns.
A: Use S3 replication to transition infrequently accessed objects to S3 Standard-Infrequent Access (S3 Standard-IA). This solution will not meet the requirement of reducing S3 costs for data with unknown or changing access patterns, as S3 replication is a feature that copies objects across buckets or Regions for redundancy or compliance purposes. It does not automatically move objects to a different storage class based on access frequency2.
B; Use S3 Lifecycle rules to transition objects from S3 Standard to Standard-Infrequent Access (S3 Standard-IA). This solution will not meet the requirement of reducing S3 costs for data with unknown or changing access patterns, as S3 Standard-IA is a storage class that offers lower storage costs than S3 Standard, but charges a retrieval fee for accessing the data. It is suitable for long-lived and infrequently accessed data, not for data with changing access patterns1.
D: Use S3 Inventory to identify and transition objects that have not been accessed from S3 Stand-ard to S3 Intelligent-Tiering. This solution will not meet the requirement of reducing S3 costs for data with unknown or changing access patterns, as S3 Inventory is a feature that provides a report of the objects in a bucket and their metadata on a daily or weekly basis. It does not automatically move objects to a different storage class based on access frequency3.
Reference URL: https://aws.amazon.com/s3/storage-classes/intelligent-tiering/ S3 Intelligent-Tiering is the best solution for reducing S3 costs when the access pattern is unpredictable or changing. S3 Intelligent-Tiering automatically moves objects between two access tiers (frequent and infrequent) based on the access frequency, without any performance impact or retrieval fees. S3 Intelligent-Tiering also has an optional archive tier for objects that are rarely accessed. S3 Lifecycle rules can be used to transition objects from S3 Standard to S3 Intelligent-Tiering.
Reference URLs:
1 https://aws.amazon.com/s3/storage-classes/intelligent-tiering/
2 https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-intelligent-tiering.html
3 https://docs.aws.amazon.com/AmazonS3/latest/userguide/intelligent-tiering-overview.html
질문 # 194
An IT consultant is working for a large financial company. The role of the consultant is to help the development team build a highly available web application using stateless web servers.
In this scenario, which AWS services are suitable for storing session state data? (Select TWO.)
정답：A,B
설명：
DynamoDB and ElastiCache are the correct answers. You can store session state data on both DynamoDB and ElastiCache. These AWS services provide high-performance storage of key-value pairs which can be used to build a highly available web application.
Redshift Spectrum is incorrect since this is a data warehousing solution where you can directly query data from your data warehouse. Redshift is not suitable for storing session state, but more on analytics and OLAP processes.
RDS is incorrect as well since this is a relational database solution of AWS. This relational storage type might not be the best fit for session states, and it might not provide the performance you need compared to DynamoDB for the same cost.
S3 Glacier is incorrect since this is a low-cost cloud storage service for data archiving and long-term backup. The archival and retrieval speeds of Glacier is too slow for handling session states.
References:
https://aws.amazon.com/caching/database-caching/
https://aws.amazon.com/caching/session-management/ Check out this Amazon Elasticache Cheat Sheet: https://tutorialsdojo.com/amazon-elasticache/
질문 # 195
A solutions architect is creating a new Amazon CloudFront distribution for an application. Some of the information submitted by users is sensitive. The application uses HTTPS but needs another layer of security.
The sensitive information should.be protected throughout the entire application stack, and access to the information should be restricted to certain applications.
Which action should the solutions architect take?
정답：B
설명：
it allows the company to protect sensitive information submitted by users throughout the entire application stack and restrict access to certain applications. By configuring a CloudFront field-level encryption profile, the company can encrypt specific fields of user data at the edge locations before sending it to the origin servers.
By using public-private key pairs, the company can ensure that only authorized applications can decrypt and access the sensitive information. References:
Field-Level Encryption
Encrypting and Decrypting Data
질문 # 196
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