AWS SAA-C01 题库答案修正版(20200425)

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Exam A

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.

C. Encrypt the Amazon EBS volumes.

D. Encrypt the data using SSL/TLS.

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.

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

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

C. Amazon SQS in front of 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

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reports that outdated data occasionally appears when the application accesses objects in Amazon S3.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

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.

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

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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

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

D. Amazon Aurora

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 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?

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

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.)

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

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.

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

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QUESTION 18

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

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