AWS 自动扩展与性能优化策略

版权申诉

PDF格式 | 3.67MB | 更新于2024-06-18 | 80 浏览量 | 举报

"AWS-SAA-CO1.462Q.AWS-SAA.pdf" 这份资料主要涉及AWS（Amazon Web Services）的相关认证考试问题，涵盖了多个AWS服务的使用场景和最佳实践。以下是根据题目内容解析的AWS知识点： Q1. 问题中提到了四个AWS服务：Amazon EC2（弹性计算云）、NAT instance（网络地址转换实例）、ELB Classic Load Balancer（经典负载均衡器）和Amazon RDS（关系数据库服务）。答案是B（NAT instance）。这道题目的背景可能是需要一个服务来提供内部网络访问，而不会公开暴露实例，NAT实例常用于此场景，允许私有子网中的实例访问互联网，但阻止外部对这些实例的直接访问。 Q2. 这个问题涉及到AWS Auto Scaling（自动扩展），一个可以根据需求自动调整计算资源的服务。用户在早上9:00时遇到系统性能下降的问题，因为那时大量呼叫中心员工开始工作，导致需求激增，而Auto Scaling没有足够时间扩展以满足需求。解决方案是B（创建一个Auto Scaling计划操作，在每天早上8:30扩大所需的资源）。这样可以提前预估并准备容量，避免高峰时段的性能问题。 Q3. 提到的是一个电子商务应用在AWS上运行，上次新产品发布时由于流量激增导致性能问题。管理团队可能需要解决突发流量的应对策略。潜在的解决方案包括使用AWS的可扩展服务，如增加Auto Scaling以应对流量峰值，使用CloudFront（内容分发网络）来缓存静态内容并减轻后端服务器的压力，或者配置弹性负载均衡器（ELB）来分散流量。此外，还可以考虑使用Amazon CloudWatch监控和警报，以便在需求增加时自动扩展。 AWS服务的核心优势在于其灵活性、可扩展性和高可用性。Auto Scaling和负载均衡是实现这些目标的关键工具，它们可以帮助确保系统在需求变化时保持稳定性能。NAT实例则提供了安全访问互联网的途径，而RDS为云中的数据库提供了托管服务，简化了数据库管理和扩展。通过有效利用这些服务，企业可以构建出能够应对各种业务需求的高效云基础设施。

Which combination of steps must the Architect complete to meet these requirements? (Choose

two.)

A. Create a bastion host that authenticates users against the corporate directory.

B. Create a bastion host with security group rules that only allow traffic from the corporate network.

C. Attach an IAM role to the bastion host with relevant permissions.

D. Configure the web servers' security group to allow SSH traffic from a bastion host.

E. Deny all SSH traffic from the corporate network in the inbound network ACL.

Answer: BD

Q59. A Solutions Architect needs to use AWS to implement pilot light disaster recovery for a

three-tier web application hosted in an on-premises datacenter.

Which solution allows rapid provision of working, fully-scaled production environment?

A. Continuously replicate the production database server to Amazon RDS.

Use AWS CloudFormation to deploy the application and any additional servers if necessary.

B. Continuously replicate the production database server to Amazon RDS.

Create one application load balancer and register on-premises servers.

Configure ELB Application Load Balancer to automatically deploy Amazon EC2 instances for

application and additional servers if the on-premises application is down.

C. Use a scheduled Lambda function to replicate the production database to AWS.

Use Amazon Route 53 health checks to deploy the application automatically to Amazon S3 if

production is unhealthy.

D. Use a scheduled Lambda function to replicate the production database to AWS.

servers if production is unavailable.

Answer: A

Q60. A Solutions Architect notices slower response times from an application. The CloudWatch

metrics on the MySQL RDS indicate Read IOPS are high and fluctuate significantly when the

database is under load.How should the database environment be re-designed to resolve the IOPS

fluctuation?

A. Change the RDS instance type to get more RAM.

B. Change the storage type to Provisioned IOPS.

C. Scale the web server tier horizontally.

D. Split the DB layer into separate RDS instances.

Answer: B

欢迎关注云计算狂魔公众号，获取考试报名优惠码

Q61. A Solutions Architect is designing a solution that can monitor memory and disk space

utilization of all Amazon EC2 instances running Amazon Linux and Windows.

Which solution meets this requirement?

A. Default Amazon CloudWatch metrics.

B. Custom Amazon CloudWatch metrics.

C. Amazon Inspector resource monitoring.

D. Default monitoring of Amazon EC2 instances.

Answer: B

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/monitoring_ec2.html

Q62. A Solutions Architect is creating a new relational database. The Compliance team will use

the database, and mandates that data content must be stored across three different Availability

Zones.

Which of the following options should the Architect Use?

A. Amazon Aurora

B. Amazon RDS MySQL with Multi-AZ enabled

C. Amazon DynamoDB

D. Amazon ElastiCache

Answer: A

Q63. A company needs to quickly ensure that all files created in an Amazon S3 bucket in us-east-1

are also available in another bucket in ap-southeast-2.

Which option represents the SIMPLIEST way to implement this design?

A. Add an S3 lifecycle rule to move any files from the bucket in us-east-1 to the bucket in

ap-southeast-2.

B. Create a Lambda function to be triggered for every new file in us-east-1 that copies the file to

the bucket in ap-southeast-2.

C. Use SNS to notify the bucket in ap-southeast-2 to create a file whenever the file is created in

the bucket in us-east-1.

D. Enable versioning and configure cross-region replication from the bucket in us-east-1 to the

bucket in ap-southeast-2.

Answer: D

Q64. An organization has a long-running image processing application that runs on Spot Instances

that will be terminated when interrupted. A highly available workload must be designed to respond

to Spot Instance interruption notices. The solution must include a two-minute warning when there

is not enough capacity.

How can these requirements be met?

A. Use Amazon CloudWatch Events to invoke an AWS Lambda function that can launch

On-Demand Instances.

B. Regularly store data from the application on Amazon DynamoDB. Increase the maximum

number of instances in the AWS Auto Scaling group.

C. Manually place a bid for additional Spot Instances at a higher price in the same AWS Region

and Availability Zone.

D. Ensure that the Amazon Machine Image associated with the application has the latest

configurations for the launch configuration.

Answer: A

Q65. A company has an Amazon RDS-managed online transaction processing system that has

very heavy read and write. The Solutions Architect notices throughput issues with the system.

How can the responsiveness of the primary database be improved?

A. Use asynchronous replication for standby to maximize throughput during peak demand.

B. Offload SELECT queries that can tolerate stale data to READ replica.

C. Offload SELECT and UPDATE queries to READ replica.

D. Offload SELECT query that needs the most current data to READ replica.

Answer: B

https://aws.amazon.com/rds/faqs/

Q66. A company is designing a failover strategy in Amazon Route 53 for its resources between

two AWS Regions. The company must have the ability to route a user's traffic to the region with

least latency, and if both regions are healthy, Route 53 should route traffic to resources in both

regions.

Which strategy should the Solutions Architect recommend?

A. Configure active-active failover using Route 53 latency DNS records.

B. Configure active-passive failover using Route 53 latency DNS records.

C. Configure active-active failover using Route 53 failover DNS records.

D. Configure active-passive failover using Route 53 failover DNS records.

Answer: A

Q67. A company is developing several critical long-running applications hosted on Docker.

How should a Solutions Architect design a solution to meet the scalability and orchestration

requirements on AWS?

A. Use Amazon ECS and Service Auto Scaling.

B. Use Spot Instances for orchestration and for scaling containers on existing Amazon EC2

instances.

C. Use AWS OpsWorks to launch containers in new Amazon EC2 instances.

D. Use Auto Scaling groups to launch containers on existing Amazon EC2 instances.

Answer: A

https://aws.amazon.com/getting-started/tutorials/deploy-docker-containers/

Q68. A Solutions Architect is developing a new web application on AWS. The Architect expects the

application to become very popular, so the application must scale to support the load. The

Architect wants to focus on software development and deploying new features without

provisioning or managing instances.

What solution is appropriate?

A. Amazon API Gateway and AWS Lambda

B. Elastic Load Balancing with Auto Scaling groups and Amazon EC2

C. Amazon API Gateway and Amazon EC2

D. Amazon CloudFront and AWS Lambda

Answer: A

Q69. A Solutions Architect is deploying a new production MySQL database on AWS. It is critical

that the database is highly available.

What should the Architect do to achieve this goal with Amazon RDS?

A. Create a read replica of the primary database and deploy it in a different AWS Region.

B. Enable multi-AZ to create a standby database in a different Availability Zone.

C. Enable multi-AZ to create a standby database in a different AWS Region.

D. Create a read replica of the primary database and deploy it in a different Availability Zone.

Answer: B

Q70. An organization designs a mobile application for their customers to upload photos to a site.

The application needs a secure login with MFA. The organization wants to limit the initial build time

and maintenance of the solution.

Which solution should a Solutions Architect recommend to meet the requirements?

A. Use Amazon Cognito Identity with SMS-based MFA.

B. Edit AWS IAM policies to require MFA for all users.

C. Federate IAM against corporate AD that requires MFA.

D. Use Amazon API Gateway and require SSE for photos.

Answer: A

Q71. A Solutions Architect is designing a solution to monitor weather changes by the minute. The

frontend application is hosted on Amazon EC2 instances. The backend must be scalable to a

virtually unlimited size, and data retrieval must occur with minimal latency.

Which AWS service should the Architect use to store the data and achieve these requirements?

A. Amazon S3

B. Amazon DynamoDB

C. Amazon RDS

D. Amazon EBS

Answer: B

Q72. A company hosts a website on premises. The website has a mix of static and dynamic

content, but users experience latency when loading static files.

Which AWS service can help reduce latency?

A. Amazon CloudFront with on-premises servers as the origin

B. ELB Application Load Balancer

C. Amazon Route 53 latency-based routing

D. Amazon EFS to store and server static files

Answer: A

Q73. A company wants to analyze all of its sales information aggregated over the last 12 months.

The company expects there to be over 10TB of data from multiple sources.

What service should be used?

A. Amazon DynamoDB

B. Amazon Aurora MySQL

C. Amazon RDS MySQL

D. Amazon Redshift

Answer: D

Q74. A media company has deployed a multi-tier architecture on AWS. Web servers are deployed

in two Availability Zones using an Auto Scaling group with a default Auto Scaling termination policy.

The web servers' Auto Scaling group currently has 15 instances running.

Which instance will be terminated first during a scale-in operation?

A. The instance with the oldest launch configuration.

B. The instance in the Availability Zone that has most instances.

C. The instance closest to the next billing hour.

D. The oldest instance in the group.

Answer: B

Q75. A retail company has sensors placed in its physical retail stores. The sensors send

messages over HTTP when customers interact with in-store product displays. A Solutions

Architect needs to implement a system for processing those sensor messages; the results must be

available for the Data Analysis team.

Which architecture should be used to meet these requirements?

A. Implement an Amazon API Gateway to server as the HTTP endpoint. Have the API Gateway

trigger an AWS Lambda function to process the messages, and save the results to an Amazon

DynamoDB table.

B. Create an Amazon EC2 instance to server as the HTTP endpoint and to process the messages.

Save the results to Amazon S3 for the Data Analysis team to download.

C. Use Amazon Route 53 to direct incoming sensor messages to a Lambda function to process

the message and save the results to a Amazon DynamoDB table.

D. Use AWS Direct Connect to connect sensors to DynamoDB so that data can be written directly

to a DynamoDB table where it can be accessed by the Data Analysis team.

Answer: A

Q76. A client is migrating a legacy web application to the AWS Cloud. The current system uses an

Oracle database as a relational database management system solution. Backups occur every

night, and the data is stored on-premises. The Solutions Architect must automate the backups and

identity a storage solution while keeping costs low.

Which AWS service will meet these requirements?

A. Amazon RDS

B. Amazon RedShift

C. Amazon DynamoDB Accelerator

D. Amazon ElastiCache

Answer: A

剩余135页未读，继续阅读

资料库01

粉丝: 490

AWS 自动扩展与性能优化策略

Python开发者的云服务工具：aws-cdk.aws-ssm-1.138.0

Python库aws-cdk.aws-ivs-1.124.0.tar.gz下载指南

Python库aws-cdk.aws-iot1click-1.143.0.tar.gz官方下载及安装指南

SAA-CO1.462Q.AWS-SAA（英）.pdf

AWS-SAA-CO1.462Q.AWS-SAA解决方案架构师 - 助理级.pdf

AWS-SAA_PLPassLeader_19031.pdf

AWS-SAA学习资料中級.7z

SAA-CO1.320Q.AWS-Certified-Solutions-Architect-Associate.百货修改.V3-打印版.pdf

Python库 | aws-cdk.aws-s3-deployment-1.95.1.tar.gz

Python库 | aws-cdk.aws-ses-actions-1.138.2.tar.gz

最新资源