AWSSAA-C01题库答案修正版(20200425)_AWSAcademyCloudArchitecting资源-CSDN文库

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AWS SAA-C01 是亚马逊网络服务（Amazon Web Services, AWS）提供的专业解决方案架构师认证考试的其中一个版本。本题库包含了针对该版本的题目及其修正答案，为那些通过了考试的考生所共享。以下是对题库中各个题目知识点的详细说明。 ### 题目1 题目涉及到在Amazon Redshift集群中设计应用程序时如何实现数据加密。正确答案是 B. 使用AWS KMS（Key Management Service）的默认客户主密钥。这是因为AWS KMS可以用于管理数据加密密钥，而加密Amazon Redshift集群中的数据需要使用它提供的密钥。这与在私有子网（A）中放置Redshift集群、对Amazon EBS卷（C）加密或使用SSL/TLS（D）加密数据的传输不同。 ### 题目2 当一个网站经历不可预测的流量，特别是在流量高峰时数据库无法跟上写入请求时，该选择哪个AWS服务来解耦网站应用和数据库？正确答案是 A. Amazon SQS（Simple Queue Service）。Amazon SQS是一个托管队列服务，可用于在应用组件之间传递信息，使得系统能够解耦、缓冲和扩展负载。 ### 题目3 需要与本地存储交互的遗留应用程序，需要在AWS上设计一种新的存储解决方案。正确答案是 C. AWS Storage Gateway的存储模式，这样可以将数据写入Amazon S3。AWS Storage Gateway提供了一种连接本地存储到云存储的方式，其中存储模式可以实现数据的持久缓存和存储。 ### 题目4 移动游戏应用程序架构师正在设计架构以防止RDS MySQL数据库成为瓶颈。正确答案是 D. Amazon ElastiCache。Amazon ElastiCache 是一个AWS服务，它提供了一个可简化数据密集型应用的部署的缓存解决方案，可以有效地处理频繁访问的查询，防止数据库瓶颈。 ### 题目5 一家公司正在推出一个预计非常受欢迎的应用程序，并且需要一个可以随着应用程序其余部分一起扩展的数据库，频繁更改数据模式，并且在进行数据库更改时不能有任何停机时间。正确答案是 B. Amazon DynamoDB。Amazon DynamoDB是一个完全托管的NoSQL数据库服务，提供了可预测的高性能和灵活的数据模型，使得它能够按需扩展，并且不需要管理服务器。 ### 题目6 解决方案架构师正在为一个5TB的Amazon Redshift集群设计灾难恢复方案。由于题库内容不完整，无法提供确切答案，但是通常，针对Amazon Redshift的灾难恢复策略可能包括配置跨区域复制、自动快照备份以及创建备用集群等策略。 AWS SAA-C01 考试内容覆盖了AWS的核心服务，以及如何将这些服务集成到安全、可靠的云解决方案中。通过这些题目的解答，可以看出，AWS解决方案架构师需要具备强大的能力去选择和应用适合不同业务需求的云服务，同时理解云服务的工作原理以及如何在设计架构时考虑高可用性、可扩展性、灾备和成本效益。掌握这些知识点对于通过AWS SAA-C01认证考试至关重要。

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Exam A

QUESTION 1

A Solutions Architect is designing an application that will encrypt all data in an Amazon Redshift cluster.

Which action will encrypt the data at rest?

A. Place the Redshift cluster in a private subnet.

B. Use the AWS KMS Default Customer master key.

C. Encrypt the Amazon EBS volumes.

D. Encrypt the data using SSL/TLS.

QUESTION 2

A website experiences unpredictable traffic. During peak traffic times, the database is unable to keep up with

the write request.

Which AWS service will help decouple the web application from the database?

A. Amazon SQS

B. Amazon EFS

C. Amazon S3

D. AWS Lambda

QUESTION 3

A legacy application needs to interact with local storage using iSCSI. A team needs to design a reliable storage

solution to provision all new storage on AWS.

Which storage solution meets the legacy application requirements?

A. AWS Snowball storage for the legacy application until the application can be re-architected.

B. AWS Storage Gateway in cached mode for the legacy application storage to write data to Amazon S3.

C. AWS Storage Gateway in stored mode for the legacy application storage to write data to Amazon S3.

D. An Amazon S3 volume mounted on the legacy application server locally using the File Gateway service.

QUESTION 4

A Solutions Architect is designing an architecture for a mobile gaming application. The application is expected

to be very popular. The Architect needs to prevent the Amazon RDS MySQL database from becoming a

bottleneck due to frequently accessed queries.

Which service or feature should the Architect add to prevent a bottleneck?

A. Multi-AZ feature on the RDS MySQL Database

B. ELB Classic Load Balancer in front of the web application tier

C. Amazon SQS in front of RDS MySQL Database

D. Amazon ElastiCache in front of the RDS MySQL Database

QUESTION 5

A company is launching an application that it expects to be very popular. The company needs a database that

can scale with the rest of the application. The schema will change frequently. The application cannot afford any

downtime for database changes.

Which AWS service allows the company to achieve these objectives?

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A. Amazon Redshift

B. Amazon DynamoDB

C. Amazon RDS MySQL

D. Amazon Aurora

QUESTION 6

A Solutions Architect is designing a disaster recovery solution for a 5 TB Amazon Redshift cluster. The

recovery site must be at least 500 miles (805 kilometers) from the live site.

How should the Architect meet these requirements?

A. Use AWS CloudFormation to deploy the cluster in a second region.

B. Take a snapshot of the cluster and copy it to another Availability Zone.

C. Modify the Redshift cluster to span two regions.

D. Enable cross-region snapshots to a different region.

QUESTION 7

A customer has written an application that uses Amazon S3 exclusively as a data store. The application works

well until the customer increases the rate at which the application is updating information. The customer now

reports that outdated data occasionally appears when the application accesses objects in Amazon S3.

What could be the problem, given that the application logic is otherwise correct?

A. The application is reading parts of objects from Amazon S3 using a range header.

B. The application is reading objects from Amazon S3 using parallel object requests.

C. The application is updating records by writing new objects with unique keys.

D. The application is updating records by overwriting existing objects with the same keys.

QUESTION 8

A Solutions Architect is designing a new social media application. The application must provide a secure

method for uploading profile photos. Each user should be able to upload a profile photo into a shared storage

location for one week after their profile is created.

Which approach will meet all of these requirements?

A. Use Amazon Kinesis with AWS CloudTrail for auditing the specific times when profile photos are uploaded.

B. Use Amazon EBS volumes with IAM policies restricting user access to specific time periods.

C. Use Amazon S3 with the default private access policy and generate pre-signed URLs each time a new site

profile is created.

D. Use Amazon CloudFront with AWS CloudTrail for auditing the specific times when profile photos are

uploaded.

QUESTION 9

An application requires block storage for file updates. The data is 500 GB and must continuously sustain 100

MiB/s of aggregate read/write operations.

Which storage option is appropriate for this application?

A. Amazon S3

B. Amazon EFS

Amazon EBS

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Amazon Glacier

QUESTION 10

A mobile application serves scientific articles from individual files in an Amazon S3 bucket. Articles older than

30 days are rarely read. Articles older than 60 days no longer need to be available through the application, but

the application owner would like to keep them for historical purposes.

Which cost-effective solution BEST meets these requirements?

A. Create a Lambda function to move files older than 30 days to Amazon EBS and move files older than 60

days to Amazon Glacier.

B. Create a Lambda function to move files older than 30 days to Amazon Glacier and move files older than 60

days to Amazon EBS.

C. Create lifecycle rules to move files older than 30 days to Amazon S3 Standard Infrequent Access and move

files older than 60 days to Amazon Glacier.

D. Create lifecycle rules to move files older than 30 days to Amazon Glacier and move files older than 60 days

to Amazon S3 Standard Infrequent Access.

QUESTION 11

An organization is currently hosting a large amount of frequently accessed data consisting of key-value pairs

and semi-structured documents in their data center. They are planning to move this data to AWS.

Which of one of the following services MOST effectively meets their needs?

A. Amazon Redshift

B. Amazon RDS

C. Amazon DynamoDB

D. Amazon Aurora

QUESTION 12

A Lambda function must execute a query against an Amazon RDS database in a private subnet.

Which steps are required to allow the Lambda function to access the Amazon RDS database? (Choose two.)

A. Create a VPC Endpoint for Amazon RDS.

B. Create the Lambda function within the Amazon RDS VPC.

C. Change the ingress rules of Lambda security group, allowing the Amazon RDS security group.

D. Change the ingress rules of the Amazon RDS security group, allowing the Lambda security group.

E. Add an Internet Gateway (IGW) to the VPC, route the private subnet to the IGW.

QUESTION 13

A Solutions Architect needs to build a resilient data warehouse using Amazon Redshift. The Architect needs to

rebuild the Redshift cluster in another region.

Which approach can the Architect take to address this requirement?

A. Modify the Redshift cluster and configure cross-region snapshots to the other region.

B. Modify the Redshift cluster to take snapshots of the Amazon EBS volumes each day, sharing those

snapshots with the other region.

C. Modify the Redshift cluster and configure the backup and specify the Amazon S3 bucket in the other region.

D. Modify the Redshift cluster to use AWS Snowball in export mode with data delivered to the other region.

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QUESTION 14

A popular e-commerce application runs on AWS. The application encounters performance issues. The

database is unable to handle the amount of queries and load during peak times. The database is running on

the RDS Aurora engine on the largest instance size available.

What should an administrator do to improve performance?

A. Convert the database to Amazon Redshift.

B. Create a CloudFront distribution.

C. Convert the database to use EBS Provisioned IOPS.

D. Create one or more read replicas.

QUESTION 15

A Solutions Architect is designing the architecture for a new three-tier web-based e-commerce site that must

be available 24/7. Requests are expected to range from 100 to 10,000 each minute. Usage can vary depending

on time of day, holidays, and promotions. The design should be able to handle these volumes, with the ability

to handle higher volumes if necessary.

How should the Architect design the architecture to ensure the web tier is cost-optimized and can handle the

expected traffic? (Choose two.)

A. Launch Amazon EC2 instances in an Auto Scaling group behind an ELB.

B. Store all static files in a multi-AZ Amazon Aurora database.

C. Create an CloudFront distribution pointing to static content in Amazon S3.

D. Use Amazon Route 53 to route traffic to the correct region.

E. Use Amazon S3 multi-part uploads to improve upload times.

QUESTION 16

A Solutions Architect is designing a three-tier web application. The Architect wants to restrict access to the

database tier to accept traffic from the application servers only. However, these application servers are in an

Auto Scaling group and may vary in quantity.

How should the Architect configure the database servers to meet the requirements?

A. Configure the database security group to allow database traffic from the application server IP addresses.

B. Configure the database security group to allow database traffic from the application server security group.

C. Configure the database subnet network ACL to deny all inbound non-database traffic from the application-

tier subnet.

D. Configure the database subnet network ACL to allow inbound database traffic from the application-tier

subnet.

QUESTION 17

An Internet-facing multi-tier web application must be highly available. An ELB Classic Load Balancer is

deployed in front of the web tier. Amazon EC2 instances at the web application tier are deployed evenly across

two Availability Zones. The database is deployed using RDS Multi-AZ. A NAT instance is launched for Amazon

EC2 instances and database resources to access the Internet. These instances are not assigned with public IP

addresses.

Which component poses a potential single point of failure in this architecture?

A. Amazon EC2

B. NAT instance

C. ELB Classic Load Balancer

Amazon RDS

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QUESTION 18

A call center application consists of a three-tier application using Auto Scaling groups to automatically scale

resources as needed. Users report that every morning at 9:00 AM the system becomes very slow for about 15

minutes. A Solutions Architect determines that a large percentage of the call center staff starts work at 9:00

AM, so Auto Scaling does not have enough time to scale out to meet demand.

How can the Architect fix the problem?

A. Change the Auto Scaling group’s scale out event to scale based on network utilization.

B. Create an Auto Scaling scheduled action to scale out the necessary resources at 8:30 AM every morning.

C. Use Reserved Instances to ensure the system has reserved the right amount of capacity for the scale-up

events.

D. Permanently keep a steady state of instances that is needed at 9:00 AM to guarantee available resources,

but leverage Spot Instances.

QUESTION 19

An e-commerce application is hosted in AWS. The last time a new product was launched, the application

experienced a performance issue due to an enormous spike in traffic. Management decided that capacity must

be doubled the week of future product launches.

Which is the MOST efficient way for management to ensure that capacity requirements are met?

A. Add a Step Scaling policy.

B. Add a Dynamic Scaling policy.

C. Add a Scheduled Scaling action.

D. Add Amazon EC2 Spot Instances.

QUESTION 20

A customer owns a simple API for their website that receives about 1,000 requests each day and has an

average response time of 50 ms. It is currently hosted on one c4.large instance.

Which changes to the architecture will provide high availability at the LOWEST cost?

A. Create an Auto Scaling group with a minimum of one instance and a maximum of two instances, then use

an Application Load Balancer to balance the traffic.

B. Recreate the API using Amazon API Gateway and use AWS Lambda as the service backend.

C. Create an Auto Scaling group with a maximum of two instances, then use an Application Load Balancer to

balance the traffic.

D. Recreate the API using Amazon API Gateway and integrate the new API with the existing backend service.

QUESTION 21

A Solutions Architect is designing an application that uses Amazon EBS volumes. The volumes must be

backed up to a different region.

How should the Architect meet this requirement?

A. Create EBS snapshots directly from one region to another.

B. Move the data to an Amazon S3 bucket and enable cross-region replication.

C. Create EBS snapshots and then copy them to the desired region.

D. Use a script to copy data from the current Amazon EBS volume to the destination Amazon EBS volume.

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skncsdn

2020-06-27

覆盖率挺全的。虽然 7/1 过期，不过应该还是会提供 70% 吧。

AWS SAA-C01 题库答案修正版(20200425)

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AWS SAA-C01 题库答案修正版(20200425)

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