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AWS Certified Solutions Architect - Professional考試評估個人在AWS上設計和部署可擴展，高可用和容錯的系統的能力。考試涵蓋了各種主題，包括AWS服務、設計和部署多層應用程序、管理數據安全性以及實施業務連續性和災難恢復策略。該考試旨在測試個人在實際情況下應用技能，從而確保個人能夠熟練處理複雜的基於雲的解決方案。

AWS-Solutions-Architect-Professional認證考試 - AWS-Solutions-Architect-Professional資訊

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最新的 AWS Certified Solutions Architect AWS-Solutions-Architect-Professional 免費考試真題 (Q303-Q308):

問題 #303
Which of the following is true while using an IAM role to grant permissions to applications running on Amazon EC2 instances?

A. All applications on the instance share multiple roles and permissions.
B. All applications on the instance share the same role, but different permissions.
C. Multiple roles are assigned to an EC2 instance at a time.
D. Only one role can be assigned to an EC2 instance at a time.

答案：D

解題說明：
Only one role can be assigned to an EC2 instance at a time, and all applications on the instance share the same role and permissions.
http://docs.aws.amazon.com/IAM/latest/UserGuide/role-usecase-ec2app.html

問題 #304
A Solutions Architect is responsible for redesigning a legacy Java application to improve its availability, data durability, and scalability. Currently, the application runs on a single high-memory Amazon EC2 instance. It accepts HTTP requests from upstream clients, adds them to an in-memory queue, and responds with a 200 status. A separate application thread reads items from the queue, processes them, and persists the results to an Amazon RDS MySQL instance. The processing time for each item takes 90 seconds on average., most of which is spent waiting on external service calls, but the application is written to process multiple items in parallel.
Traffic to this service is unpredictable. During periods of high load, items may sit in the internal queue for over an hour while the application processes the backing. In addition, the current system has issues with availability and data if the single application node fails.
Clients that access this service cannot be modified. They expect to receive a response to each HTTP request they send within 10 seconds before they will time out and retry the request.
Which approach would improve the availability and durability of the system while decreasing the processing latency and minimizing costs?

A. Create an Amazon API Gateway REST API that uses Lambda proxy integration to pass requests to an AWS Lambda function. Migrate the core processing code to a Lambda function and write a wrapper class that provides a handler method that converts the proxy events to the internal application data model and invokes the processing module.
B. Create an Amazon API Gateway REST API that uses a service proxy to put items in an Amazon SQS queue. Extract the core processing code from the existing application and update it to pull items from Amazon SQS queue. Extract the core processing code from the existing application and update it to pull items from Amazon SQS instead of an in-memory queue. Deploy the new processing application to smaller EC2 instances within an Auto Scaling group that scales dynamically based on the approximate number of messages in the Amazon SQS queue.
C. Modify the application to use Amazon DynamoDB instead of Amazon RDS. Configure Auto Scaling for the DynamoDB table. Deploy the application within an Auto Scaling group with a scaling policy based on CPU utilization. Back the in-memory queue with a memory-mapped file to an instance store volume and periodically write that file to Amazon S3.
D. Update the application to use a Redis task queue instead of the in-memory queue. Build a Docker container image for the application. Create an Amazon ECS task definition that includes the application container and a separate container to host Redis. Deploy the new task definition as an ECS service using AWS Fargate and enable Auto Scaling.

答案：C

問題 #305
A company is deploying a new cluster for big data analytics on AWS. The cluster will run across many Linux Amazon EC2 instances that are spread across multiple Availability Zones.
All of the nodes in the cluster must have read and write access to common underlying file storage. The file storage must be highly available, must be resilient, must be compatible with the Portable Operating System Interface (POSIX), and must accommodate high levels of throughput.
Which storage solution will meet these requirements?

A. Provision a new Amazon Elastic Block Store (Amazon EBS) volume that uses the lo2 volume type.
Attach the EBS volume to all of the EC2 instances in the cluster.
B. Provision a new Amazon Elastic File System (Amazon EFS) file system that uses Max I/O performance mode. Mount the EFS file system on each EC2 instance in the cluster.
C. Provision a new Amazon Elastic File System (Amazon EFS) file system that uses General Purpose performance mode. Mount the EFS file system on each EC2 instance in the cluster.
D. Provision an AWS Storage Gateway file gateway NFS file share that is attached to an Amazon S3 bucket. Mount the NFS file share on each EC2 instance In the cluster.

答案：B

問題 #306
To serve Web traffic for a popular product your chief financial officer and IT director have purchased 10 ml
large heavy utilization Reserved Instances (RIs) evenly spread across two availability zones: Route 53 is
used to deliver the traffic to an Elastic Load Balancer (ELB). After several months, the product grows even
more popular and you need additional capacity As a result, your company purchases two C3.2xlarge
medium utilization Ris You register the two c3 2xlarge instances with your ELB and quickly find that the ml
large instances are at 100% of capacity and the c3 2xlarge instances have significant capacity that's
unused Which option is the most cost effective and uses EC2 capacity most effectively?

A. Use a separate ELB for each instance type and distribute load to ELBs with Route 53 weighted round
robin.
B. Configure ELB with two c3.2xlarge instances and use on-demand Autoscaling group for up to two
additional c3.2xlarge instances. Shut off m1.large instances.
C. Route traffic to EC2 m1.large and c3.2xlarge instances directly using Route 53 latency based routing
and health checks. Shut off ELB.
D. Configure Autoscaling group and Launch Configuration with ELB to add up to 10 more on-demand
m1.large instances when triggered by Cloudwatch. Shut off c3.2xlarge instances.

答案：B

問題 #307
A company uses Amazon S3 to store documents that may only be accessible to an Amazon EC2 instance in a certain virtual private cloud (VPC). The company fears that a malicious insider with access to this instance could also set up an EC2 instance in another VPC to access these documents.
Which of the following solutions will provide the required protection?

A. Use S3 client-side encryption and store the key in the instance metadata.
B. Use S3 server-side encryption and protect the key with an encryption context.
C. Use an S3 VPC endpoint and an S3 bucket policy to limit access to this VPC endpoint.
D. Use EC2 instance profiles and an S3 bucket policy to limit access to the role attached to the instance profile.

答案：C

解題說明：
Explanation
https://docs.aws.amazon.com/vpc/latest/userguide/vpce-gateway.html
Endpoint connections cannot be extended out of a VPC. Resources on the other side of a VPN connection, VPC peering connection, AWS Direct Connect connection, or ClassicLink connection in your VPC cannot use the endpoint to communicate with resources in the endpoint service.

問題 #308
......

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