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The Amazon SOA-C02 Exam consists of 65 multiple-choice and multiple-response questions that need to be completed within 130 minutes. The questions are designed to test the candidate's knowledge of AWS services such as EC2, RDS, S3, and CloudFormation, as well as their ability to use AWS management tools such as CloudWatch, CloudTrail, and AWS Config.
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A company's VPC has an existing IPv4 configuration. The IPv4 configuration includes public subnets, private subnets, NAT gateways, default route tables, and ACLs.
The company associates an IPv6 CIDR block with the VPC. The company adds IPv6 allocations to each existing subnet and adds routes to the route tables. The company updates the ACLs to allow all IPv6 traffic.
Public subnets are working as expected, but private subnets are not allowing internet IPv6 connections.
What should a SysOps administrator do to allow outbound-only connectivity for the new IPv6 subnets?
A. Turn on IPv6 NAT on the NAT gateways. Create a default route in the route tables that are associated with the private subnets. Configure the default route to point to the NAT gateways.
B. Configure a new IPv6-only NAT gateway. Create a default route in the route tables that are associated with the private subnets. Configure the default route to point to the IPv6-only NAT gateway.
C. Configure an egress-only internet gateway and associate it with the VPC. Create a default route in the route tables that are associated with the private subnets. Configure the default route to point to the egress-only internet gateway.
D. Create a default route in the route tables that are associated with the private subnets. Configure the default route to point to the existing internet gateway.
NEW QUESTION # 119
A company has an application that runs on a fleet of Amazon EC2 instances behind an Elastic Load Balancer. The instances run in an Auto Scaling group. The application's performance remains consistent throughout most of each day. However, an increase in user traffic slows the performance during the same 4-hour period of time each day.
What is the MOST operationally efficient solution that will resolve this issue?
A. Configure a second Elastic Load Balancer in front of the Auto Scaling group with a weighted routing policy.
B. Configure the fleet of EC2 instances to run on larger instance types to support the increase in user traffic.
C. Manually add a few more EC2 instances to the Auto Scaling group to support the increase in user traffic.
D. Create a scheduled scaling action to scale out the number of EC2 instances shortly before the increase in user traffic occurs.
Answer: D
Explanation:
They see the same slow performance at the same time each day. Scheduled scaling makes sense.
Scheduled scaling helps you to set up your own scaling schedule according to predictable load changes. For example, let's say that every week the traffic to your web application starts to increase on Wednesday, remains high on Thursday, and starts to decrease on Friday. You can configure a schedule for Amazon EC2 Auto Scaling to increase capacity on Wednesday and decrease capacity on Friday.
To use scheduled scaling, you create scheduled actions. Scheduled actions are performed automatically as a function of date and time. When you create a scheduled action, you specify when the scaling activity should occur and the new desired, minimum, and maximum sizes for the scaling action. You can create scheduled actions that scale one time only or that scale on a recurring schedule. https://docs.aws.amazon.com/auto ... eduled-scaling.html
NEW QUESTION # 120
A SysOps administrator is designing a solution for an Amazon RDS for PostgreSQL DB instance. Database credentials must be stored and rotated monthly. The applications that connect to the DB instance send write- intensive traffic with variable client connections that sometimes increase significantly in a short period of time.
Which solution should a SysOps administrator choose to meet these requirements?
A. Configure AWS Secrets Manager to automatically rotate the credentials for the DB instance. Use RDS Proxy to handle the increases in database connections.
B. Configure AWS Key Management Service (AWS KMS) to automatically rotate the keys for the DB instance. Use RDS read replicas to handle the increases in database connections.
C. Configure AWS Key Management Service (AWS KMS) to automatically rotate the keys for the DB instance. Use RDS Proxy to handle the increases in database connections.
D. Configure AWS Secrets Manager to automatically rotate the credentials for the DB instance. Use RDS read replicas to handle the increases in database connections.
Answer: A
Explanation:
To meet the requirements of storing and rotating database credentials monthly and handling write-intensive traffic with variable client connections, you can use AWS Secrets Manager and Amazon RDS Proxy.
* AWS Secrets Manager for Credential Rotation:
* Open the AWS Secrets Manager console at AWS Secrets Manager Console.
* Store the database credentials as a new secret and configure automatic rotation for every 30 days.
* AWS Secrets Manager will handle the rotation process and update the secret with new credentials.
* Amazon RDS Proxy for Connection Management:
* Open the Amazon RDS console at Amazon RDS Console.
* Create an RDS Proxy for the PostgreSQL DB instance.
* Configure the proxy to handle the connection pooling and manage the connections efficiently.
* The proxy will help manage the database connections, reduce the overhead on the database, and improve performance during peak loads.
This solution ensures that database credentials are securely stored and rotated automatically while handling increased database connections effectively.
AWS Secrets Manager
Using AWS Secrets Manager to Rotate Amazon RDS Database Credentials
Amazon RDS Proxy
NEW QUESTION # 121
A company is running an application on premises and wants to use AWS for data backup All of the data must be available locally The backup application can write only to block-based storage that is compatible with the Portable Operating System Interface (POSIX) Which backup solution will meet these requirements?
A. Configure the backup software to use Amazon S3 as the target for the data backups
B. Configure the backup software to use Amazon S3 Glacier as the target for the data backups
C. Use AWS Storage Gateway, and configure it to use gateway-stored volumes
D. Use AWS Storage Gateway, and configure it to use gateway-cached volumes
Answer: C
NEW QUESTION # 122
A SysOps administrator created an Amazon VPC with an IPv6 CIDR block, which requires access to the internet. However, access from the internet towards the VPC is prohibited. After adding and configuring the required components to the VPC. the administrator is unable to connect to any of the domains that reside on the internet.
What additional route destination rule should the administrator add to the route tables?
A. Route 0.0.0.0/0 traffic to an egress-only internet gateway
B. Route ::/0 traffic to an egress-only internet gateway
C. Route ::/0 traffic to an internet gateway
D. Route ;:/0 traffic to a NAT gateway
Answer: B
Explanation: https://docs.aws.amazon.com/vpc/ ... ternet-gateway.html To allow outbound IPv6 traffic from instances in your VPC to the internet, but prevent inbound traffic from the internet, you should use an egress-only internet gateway.
* Egress-Only Internet Gateway:
* An egress-only internet gateway is a horizontally scaled, redundant, and highly available VPC component that allows outbound communication over IPv6 from instances in your VPC to the internet and prevents the internet from initiating an IPv6 connection with your instances.
* Routing Configuration:
* Open the Amazon VPC console.
* Select the route table associated with your VPC.
* Add a route for IPv6 traffic (destination ::/0) to the egress-only internet gateway.
Egress-Only Internet Gateways
Routing for IPv6 Traffic
NEW QUESTION # 123
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