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Amazon AWS Certified Solutions Architect - Associate (SAA-C03) Exam Sample Questions (Q98-Q103):

NEW QUESTION # 98
A company runs a web-based portal that provides users with global breaking news, local alerts, and weather updates. The portal delivers each user a personalized view by using mixture of static and dynamic content.
Content is served over HTTPS through an API server running on an Amazon EC2 instance behind an Application Load Balancer (ALB). The company wants the portal to provide this content to its users across the world as quickly as possible.
How should a solutions architect design the application to ensure the LEAST amount of latency for all users?

• A. Deploy the application stack in a single AWS Region. Use Amazon CloudFront to serve the static content. Serve the dynamic content directly from the ALB.
• B. Deploy the application stack in two AWS Regions. Use an Amazon Route 53 latency routing policy to serve all content from the ALB in the closest Region.
• C. Deploy the application stack in two AWS Regions. Use an Amazon Route 53 geolocation routing policy to serve all content from the ALB in the closest Region.
• D. Deploy the application stack in a single AWS Region. Use Amazon CloudFront to serve all static and dynamic content by specifying the ALB as an origin.

Answer: D

Explanation:
Explanation
https://aws.amazon.com/blogs/networking-and-content-delivery/deliver-your-apps-dynamic-content-using-amazo

NEW QUESTION # 99
A company developed a web application and deployed it on a fleet of EC2 instances that uses Amazon SQS. The requests are saved as messages in the SQS queue, which is configured with the maximum message retention period. However, after thirteen days of operation, the web application suddenly crashed and there are 10,000 unprocessed messages that are still waiting in the queue. Since they developed the application, they can easily resolve the issue but they need to send a communication to the users on the issue.
What information should they provide and what will happen to the unprocessed messages?

• A. Tell the users that the application will be operational shortly and all received requests will be processed after the web application is restarted.
• B. Tell the users that unfortunately, they have to resubmit all of the requests since the queue would not be able to process the 10,000 messages together.
• C. Tell the users that unfortunately, they have to resubmit all the requests again.
• D. Tell the users that the application will be operational shortly however, requests sent over three days ago will need to be resubmitted.

Answer: A

Explanation:
In Amazon SQS, you can configure the message retention period to a value from 1 minute to 14 days.
The default is 4 days. Once the message retention limit is reached, your messages are automatically deleted.
A single Amazon SQS message queue can contain an unlimited number of messages. However, there is a 120,000 limit for the number of inflight messages for a standard queue and 20,000 for a FIFO queue.
Messages are inflight after they have been received from the queue by a consuming component, but have not yet been deleted from the queue.
In this scenario, it is stated that the SQS queue is configured with the maximum message retention period. The maximum message retention in SQS is 14 days that is why the option that says: Tell the users that the application will be operational shortly and all received requests will be processed after the web application is restarted is the correct answer i.e. there will be no missing messages.
The options that say: Tell the users that unfortunately, they have to resubmit all the requests again and Tell the users that the application will be operational shortly, however, requests sent over three days ago will need to be resubmitted are incorrect as there are no missing messages in the queue thus, there is no need to resubmit any previous requests.
The option that says: Tell the users that unfortunately, they have to resubmit all of the requests since the queue would not be able to process the 10,000 messages together is incorrect as the queue can contain an unlimited number of messages, not just 10,000 messages.
Reference:
https://aws.amazon.com/sqs/
Check out this Amazon SQS Cheat Sheet:
https://tutorialsdojo.com/amazon-sqs/

NEW QUESTION # 100
A media company has two VPCs: VPC-1 and VPC-2 with peering connection between each other.
VPC-1 only contains private subnets while VPC-2 only contains public subnets. The company uses a single AWS Direct Connect connection and a virtual interface to connect their on-premises network with VPC-1.
Which of the following options increase the fault tolerance of the connection to VPC-1? (Select TWO.)

• A. Establish another AWS Direct Connect connection and private virtual interface in the same AWS region as VPC-1.
• B. Use the AWS VPN CloudHub to create a new AWS Direct Connect connection and private virtual interface in the same region as VPC-2.
• C. Establish a new AWS Direct Connect connection and private virtual interface in the same region as VPC-2.
• D. Establish a hardware VPN over the Internet between VPC-1 and the on-premises network.
• E. Establish a hardware VPN over the Internet between VPC-2 and the on-premises network.

Answer: A,D

Explanation:
In this scenario, you have two VPCs which have peering connections with each other. Note that a VPC peering connection does not support edge to edge routing. This means that if either VPC in a peering relationship has one of the following connections, you cannot extend the peering relationship to that connection:
- A VPN connection or an AWS Direct Connect connection to a corporate network
- An Internet connection through an Internet gateway
- An Internet connection in a private subnet through a NAT device
- A gateway VPC endpoint to an AWS service; for example, an endpoint to Amazon S3.
- (IPv6) A ClassicLink connection. You can enable IPv4 communication between a linked EC2-Classic instance and instances in a VPC on the other side of a VPC peering connection. However, IPv6 is not supported in EC2-Classic, so you cannot extend this connection for IPv6 communication.

For example, if VPC A and VPC B are peered, and VPC A has any of these connections, then instances in VPC B cannot use the connection to access resources on the other side of the connection. Similarly, resources on the other side of a connection cannot use the connection to access VPC B.
Hence, this means that you cannot use VPC-2 to extend the peering relationship that exists between VPC-1 and the on-premises network. For example, traffic from the corporate network can't directly access VPC-1 by using the VPN connection or the AWS Direct Connect connection to VPC-2, which is why the following options are incorrect:
- Use the AWS VPN CloudHub to create a new AWS Direct Connect connection and private virtual interface in the same region as VPC-2.
- Establish a hardware VPN over the Internet between VPC-2 and the on-premises network.
- Establish a new AWS Direct Connect connection and private virtual interface in the same region as VPC-2.
You can do the following to provide a highly available, fault-tolerant network connection:
- Establish a hardware VPN over the Internet between the VPC and the on-premises network.
- Establish another AWS Direct Connect connection and private virtual interface in the same AWS region.
References: https://docs.aws.amazon.com/vpc/latest/peering/invalid-peering-configurations.html#edge- to-edge-vgw https://aws.amazon.com/premiumsupport/knowledge-center/configure-vpn-backup-dx/
https://aws.amazon.com/answers/networking/aws-multiple-data-center-ha-network-connectivity/ Check out this Amazon VPC Cheat Sheet:
https://tutorialsdojo.com/amazon-vpc/

NEW QUESTION # 101
A company has several web servers that need to frequently access a common Amazon RDS MySQL Multi-AZ DB instance The company wants a secure method for the web servers to connect to the database while meeting a security requirement to rotate user credentials frequently.
Which solution meets these requirements?

• A. Store the database user credentials in AWS Secrets Manager Grant the necessary IAM permissions to allow the web servers to access AWS Secrets Manager
• B. Store the database user credentials in files encrypted with AWS Key Management Service (AWS KMS) on the web server file system. The web server should be able to decrypt the files and access the database
• C. Store the database user credentials in AWS Systems Manager OpsCenter Grant the necessary IAM permissions to allow the web servers to access OpsCenter
• D. Store the database user credentials in a secure Amazon S3 bucket Grant the necessary IAM permissions to allow the web servers to retrieve credentials and access the database.

Answer: A

Explanation:
Explanation
AWS Secrets Manager helps you protect secrets needed to access your applications, services, and IT resources. The service enables you to easily rotate, manage, and retrieve database credentials, API keys, and other secrets throughout their lifecycle.
https://docs.aws.amazon.com/secretsmanager/latest/userguide/intro.html
Secrets Manager enables you to replace hardcoded credentials in your code, including passwords, with an API call to Secrets Manager to retrieve the secret programmatically. This helps ensure the secret can't be compromised by someone examining your code, because the secret no longer exists in the code. Also, you can configure Secrets Manager to automatically rotate the secret for you according to a specified schedule. This enables you to replace long-term secrets with short-term ones, significantly reducing the risk of compromise.

NEW QUESTION # 102
The start-up company that you are working for has a batch job application that is currently hosted on an EC2 instance. It is set to process messages from a queue created in SQS with default settings. You configured the application to process the messages once a week. After 2 weeks, you noticed that not all messages are being processed by the application.
What is the root cause of this issue?

• A. Amazon SQS has automatically deleted the messages that have been in a queue for more than the maximum message retention period.
• B. The SQS queue is set to short-polling.
• C. Missing permissions in SQS.
• D. The batch job application is configured to long polling.

Answer: A

Explanation:
Amazon SQS automatically deletes messages that have been in a queue for more than the maximum message retention period. The default message retention period is 4 days. Since the queue is configured to the default settings and the batch job application only processes the messages once a week, the messages that are in the queue for more than 4 days are deleted. This is the root cause of the issue.
To fix this, you can increase the message retention period to a maximum of 14 days using the SetQueueAttributes action.
References:
https://aws.amazon.com/sqs/faqs/
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-message-lifecy cle.html Check out this Amazon SQS Cheat Sheet:
https://tutorialsdojo.com/amazon-sqs/

NEW QUESTION # 103
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