SAA-C03 Probesfragen & SAA-C03 Online Praxisprüfung

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Die Amazon SAA-C03 (Amazon AWS Certified Solutions Architect – Associate (SAA-C03)) Zertifizierungsprüfung ist ein hochbegehrtes Zeugnis für IT-Profis, die ihre Expertise im Entwurf und der Bereitstellung skalierbarer, fehlertoleranter und hochverfügbarer Systeme auf der Amazon Web Services (AWS) Plattform demonstrieren möchten. Die Zertifizierungsprüfung ist darauf ausgelegt, das Wissen der Kandidaten über AWS-Services, architektonische Prinzipien und bewährte Verfahren für den Aufbau sicherer und zuverlässiger Anwendungen in der Cloud zu testen.

>> SAA-C03 Probesfragen <<

SAA-C03 Online Praxisprüfung, SAA-C03 Prüfungs

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Amazon AWS Certified Solutions Architect – Associate (SAA-C03) Exam SAA-C03 Prüfungsfragen mit Lösungen (Q84-Q89):

84. Frage
A solutions architect is developing a multiple-subnet VPC architecture. The solution will consist of six subnets in two Availability Zones. The subnets are defined as public, private and dedicated for databases. Only the Amazon EC2 instances running in the private subnets should be able to access a database.
Which solution meets these requirements?

  • A. Create a now route table that excludes the route to the public subnets’ CIDR blocks. Associate the route table to the database subnets.
  • B. Create a security group that allows ingress from the security group used by instances in the private subnets. Attach the security group to an Amazon RDS DB instance.
  • C. Create a security group that denies ingress from the security group used by instances in the public subnets. Attach the security group to an Amazon RDS DB instance.
  • D. Create a new peering connection between the public subnets and the private subnets. Create a different peering connection between the private subnets and the database subnets.

Antwort: B

Begründung:
Explanation
Security groups are stateful. All inbound traffic is blocked by default. If you create an inbound rule allowing traffic in, that traffic is automatically allowed back out again. You cannot block specific IP address using Security groups (instead use Network Access Control Lists).
“You can specify allow rules, but not deny rules.” “When you first create a security group, it has no inbound rules. Therefore, no inbound traffic originating from another host to your instance is allowed until you add inbound rules to the security group.” Source:
https://docs.aws.amazon.com/vpc/latest/userguide/VPC_SecurityGroups.html#VPCSecurityGroups

85. Frage
A company has a multi-tier application deployed on several Amazon EC2 instances in an Auto Scaling group. An Amazon RDS for Oracle instance is the application’s data layer that uses Oracle-specific PL/SQL functions. Traffic to the application has been steadily increasing. This is causing the EC2 instances to become overloaded and the RDS instance to run out of storage. The Auto Scaling group does not have any scaling metrics and defines the minimum healthy instance count only. The company predicts that traffic will continue to increase at a steady but unpredictable rate before levelling off.
What should a solutions architect do to ensure the system can automatically scale for the increased traffic? (Select TWO.)

  • A. Migrate the database to Amazon Aurora to use Auto Scaling storage.
  • B. Configure storage Auto Scaling on the RDS for Oracle Instance.
  • C. Configure an alarm on the RDS for Oracle Instance for low free storage space
  • D. Configure the Auto Scaling group to use the average free memory as the seeing metric
  • E. Configure the Auto Scaling group to use the average CPU as the scaling metric

Antwort: B,C

86. Frage
A company is preparing to store confidential data in Amazon S3 For compliance reasons the data must be encrypted at rest Encryption key usage must be logged tor auditing purposes. Keys must be rotated every year.
Which solution meets these requirements and is the MOST operationally efferent?

  • A. Server-side encryption with Amazon S3 managed keys (SSE-S3)
  • B. Server-side encryption with AWS KMS (SSE-KMS) customer master keys (CMKs) with automate rotation
  • C. Server-side encryption with customer-provided keys (SSE-C)
  • D. Server-side encryption with AWS KMS (SSE-KMS) customer master keys (CMKs) with manual rotation

Antwort: B

Begründung:
Explanation
https://docs.aws.amazon.com/kms/latest/developerguide/rotate-keys.html
When you enable automatic key rotation for a customer managed key, AWS KMS generates new cryptographic material for the KMS key every year. AWS KMS also saves the KMS key’s older cryptographic material in perpetuity so it can be used to decrypt data that the KMS key encrypted.
Key rotation in AWS KMS is a cryptographic best practice that is designed to be transparent and easy to use.
AWS KMS supports optional automatic key rotation only for customer managed CMKs. Enable and disable key rotation. Automatic key rotation is disabled by default on customer managed CMKs. When you enable (or re-enable) key rotation, AWS KMS automatically rotates the CMK 365 days after the enable date and every
365 days thereafter.

87. Frage
An application runs on Amazon EC2 instances across multiple Availability Zones The instances run in an Amazon EC2 Auto Scaling group behind an Application Load Balancer The application performs best when the CPU utilization of the EC2 instances is at or near 40%.
What should a solutions architect do to maintain the desired performance across all instances in the group?

  • A. Use a target tracking policy to dynamically scale the Auto Scaling group
  • B. Use scheduled scaling actions to scale up and scale down the Auto Scaling group
  • C. Use a simple scaling policy to dynamically scale the Auto Scaling group
  • D. Use an AWS Lambda function to update the desired Auto Scaling group capacity.

Antwort: A

Begründung:
https://docs.aws.amazon.com/autoscaling/application/userguide/application-auto-scaling-target-tracking.html

88. Frage
A company launched a website that accepts high-quality photos and turns them into a downloadable video montage. The website offers a free and a premium account that guarantees faster processing. All requests by both free and premium members go through a single SQS queue and then processed by a group of EC2 instances that generate the videos. The company needs to ensure that the premium users who paid for the service have higher priority than the free members.
How should the company re-design its architecture to address this requirement?

  • A. Use Amazon S3 to store and process the photos and then generate the video montage afterward.
  • B. Create an SQS queue for free members and another one for premium members. Configure your EC2 instances to consume messages from the premium queue first and if it is empty, poll from the free members’ SQS queue.
  • C. For the requests made by premium members, set a higher priority in the SQS queue so it will be processed first compared to the requests made by free members.
  • D. Use Amazon Kinesis to process the photos and generate the video montage in real-time.

Antwort: B

Begründung:
Amazon Simple Queue Service (SQS) is a fully managed message queuing service that enables you to decouple and scale microservices, distributed systems, and serverless applications. SQS eliminates the complexity and overhead associated with managing and operating message-oriented middleware and empowers developers to focus on differentiating work. Using SQS, you can send, store, and receive messages between software components at any volume without losing messages or requiring other services to be available.

In this scenario, it is best to create 2 separate SQS queues for each type of member. The SQS queues for the premium members can be polled first by the EC2 Instances and once completed, the messages from the free members can be processed next.
Hence, the correct answer is: Create an SQS queue for free members and another one for premium members. Configure your EC2 instances to consume messages from the premium queue first and if it is empty, poll from the free members’ SQS queue.
The option that says: For the requests made by premium members, set a higher priority in the SQS queue so it will be processed first compared to the requests made by free members is incorrect as you cannot set a priority to individual items in the SQS queue.
The option that says: Using Amazon Kinesis to process the photos and generate the video montage in real time is incorrect as Amazon Kinesis is used to process streaming data and it is not applicable in this scenario.
The option that says: Using Amazon S3 to store and process the photos and then generating the video montage afterward is incorrect as Amazon S3 is used for durable storage and not for processing data.
Explanation:
Reference:
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-best-practices.
html
Check out this Amazon SQS Cheat Sheet:
https://tutorialsdojo.com/amazon-sqs/

89. Frage
……

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