SOA-C02 Practice Test 4 — 10 Questions

Question 1

A SysOps administrator needs to automatically deploy a new version of an application to a fleet of Amazon EC2 instances every time changes are pushed to the main branch of a code repository hosted on AWS CodeCommit. Which combination of AWS services should be used?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

AWS CodePipeline, AWS CodeBuild, and AWS CodeDeploy.. AWS CodePipeline orchestrates the continuous delivery workflow by detecting changes in the CodeCommit repository, then automatically triggering AWS CodeBuild to compile and package the application, and finally deploying the new version to EC2 instances using AWS CodeDeploy. This combination provides a fully managed, end-to-end CI/CD pipeline that meets the requirement of deploying on every push to the main branch.

Answer

AWS CloudFormation and AWS CodeDeploy.

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Amazon EventBridge and AWS Systems Manager.

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AWS CloudTrail and AWS Lambda.

Question 2

A company requires that all Amazon EC2 instances launched in its AWS account must have termination protection enabled. The SysOps administrator needs to automatically remediate any instance launched without termination protection. The solution should use AWS managed services without custom scripts. Which AWS service should be used?

Accepted Answer

Configure AWS Config with a managed rule 'ec2-termination-protection-check' and set an auto-remediation action using an AWS Systems Manager Automation document that enables termination protection on the instance.. AWS Config's managed rule 'ec2-termination-protection-check' can detect instances without termination protection, and you can attach an auto-remediation action using an AWS Systems Manager Automation document (e.g., AWS-EnableTerminationProtection) to automatically enable termination protection on noncompliant instances. This solution uses only AWS managed services and requires no custom scripts, meeting the company's requirements.

Answer

Use Amazon EC2 Auto Scaling to automatically apply termination protection to all launched instances.

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Enable AWS Trusted Advisor to send notifications when instances lack termination protection, and have administrators manually fix them.

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Create an IAM policy that denies the RunInstances action unless termination protection is enabled.

Question 3

A company wants to enforce that all IAM users in an AWS account must use multi-factor authentication (MFA) to access the AWS Management Console. Which IAM policy effect should be used to deny access if MFA is not present?

Accepted Answer

Deny with a condition that aws:MultiFactorAuthPresent is false. The IAM policy must explicitly deny access when MFA is not present. By using a Deny effect with the condition aws:MultiFactorAuthPresent set to false, any request that does not include MFA authentication is blocked. This is the standard approach to enforce MFA usage, as IAM policies default to an implicit deny, but an explicit Deny overrides any Allow that might otherwise grant access.

Answer

Allow with a condition that aws:MultiFactorAuthPresent is false

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Allow with a condition that aws:MultiFactorAuthPresent is true

Answer

Deny with a condition that aws:MultiFactorAuthPresent is true

Question 4

A company uses Amazon CloudFront to deliver content to a global audience. The origin is an Application Load Balancer in us-east-1. The SysOps administrator wants to reduce costs by minimizing the number of requests that reach the origin server. Which action should the administrator take?

Accepted Answer

Enable CloudFront Origin Shield.. CloudFront Origin Shield acts as an additional caching layer in front of the origin, reducing the load on the origin by consolidating requests from multiple edge locations. This minimizes the number of requests that reach the Application Load Balancer, directly lowering origin request costs and improving cache hit ratio.

Answer

Configure multiple origins for failover.

Answer

Enable CloudFront Web Application Firewall (WAF) integration.

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Increase the cache TTL for CloudFront distributions.

Question 5

A company runs a critical application on a fleet of EC2 instances that process real-time financial transactions. The application requires consistent low latency. The SysOps administrator notices that the application's latency increases periodically due to noisy neighbors. The administrator wants to optimize performance predictability. Which instance type should the administrator choose?

Accepted Answer

Dedicated Instances. Dedicated Instances run on hardware dedicated to a single customer, eliminating the noisy-neighbor problem because no other AWS accounts share the underlying physical host. This provides the performance predictability required for consistent low-latency financial transaction processing.

Answer

Burstable Performance Instances (T3)

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Spot Instances

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Reserved Instances

Question 6

A company runs a batch processing application on Amazon EC2 instances. The application runs for 3 hours every night and can tolerate interruptions. The SysOps administrator needs to minimize compute costs. Which purchasing option should the administrator use?

Accepted Answer

Spot Instances. Spot Instances are ideal for this workload because the application is fault-tolerant (can tolerate interruptions) and runs on a fixed schedule (3 hours nightly). Spot Instances offer significant cost savings (up to 90% compared to On-Demand) by using spare EC2 capacity, and the batch processing can be designed to resume from checkpoints if interrupted.

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On-Demand Instances

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Reserved Instances

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Dedicated Instances

Question 7

A SysOps administrator needs to monitor the CPU utilization of an Amazon EC2 instance and receive an alert if it exceeds 80% for 10 consecutive minutes. The instance is in a VPC with no Internet access. What is the MOST efficient way to meet these requirements?

Accepted Answer

Create a CloudWatch alarm on the CPUUtilization metric with a period of 5 minutes and an evaluation period of 2.. A CloudWatch alarm with a period of 5 minutes and an evaluation period of 2 means the alarm evaluates two consecutive 5-minute data points, totaling 10 minutes. Since the EC2 instance is in a VPC with no Internet access, CloudWatch metrics are still reported via the CloudWatch service endpoint within the VPC (or via VPC endpoints), so no additional agent or script is needed. This is the most efficient approach as it uses native CloudWatch functionality without requiring any custom scripts or additional software.

Answer

Use AWS Systems Manager to run a script on the instance that checks CPU and sends an SNS notification.

Answer

Enable detailed monitoring on the EC2 instance and create a CloudWatch alarm on the CPUUtilization metric.

Answer

Install the CloudWatch agent on the EC2 instance to collect CPU metrics and create a CloudWatch alarm.

Question 8

A company needs a dedicated private network connection from its on-premises data center to AWS that provides consistent network performance and high bandwidth. The connection must bypass the public internet. Which AWS service should the SysOps administrator use?

Accepted Answer

AWS Direct Connect. AWS Direct Connect is the correct choice because it provides a dedicated, private network connection from an on-premises data center to AWS, bypassing the public internet entirely. This ensures consistent network performance, low latency, and high bandwidth, which are critical for workloads requiring predictable throughput and a private link.

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AWS Site-to-Site VPN

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AWS Client VPN

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AWS Transit Gateway

Question 9

A company's security policy requires that all new Amazon S3 buckets must have server-side encryption with AWS Key Management Service (SSE-KMS) enabled by default. A SysOps administrator wants to enforce this requirement for all current and future S3 buckets in the account. Which AWS service or feature should be used to automatically apply this configuration?

Accepted Answer

Use AWS Config with the 's3-bucket-server-side-encryption-enabled' managed rule and configure automatic remediation to apply SSE-KMS when a non-compliant bucket is detected.. AWS Config with the 's3-bucket-server-side-encryption-enabled' managed rule can evaluate S3 buckets for compliance with server-side encryption requirements. When a non-compliant bucket is detected, automatic remediation can be configured to apply SSE-KMS using an AWS Systems Manager Automation document, ensuring all current and future buckets meet the security policy without manual intervention.

Answer

Enable S3 default encryption at the account level in the S3 console.

Answer

Create an AWS CloudTrail trail that captures S3 API calls and triggers a Lambda function to enable encryption on any bucket that is created without it.

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Use an AWS Organizations Service Control Policy (SCP) to deny the s3:PutBucketPublicAccessBlock action, forcing users to enable encryption.

Question 10

A company uses AWS Direct Connect to connect its on-premises data center to AWS. The data center has multiple VLANs that need to connect to separate VPCs in AWS. The company wants to maintain isolation between the VPCs while maximizing bandwidth utilization. Which solution should the SysOps administrator recommend?

Accepted Answer

Configure a single Direct Connect connection with multiple private virtual interfaces, each tagged with a different VLAN ID and associated with a different VPC.. A single Direct Connect connection can support multiple private virtual interfaces (VIFs), each tagged with a unique 802.1Q VLAN ID. This allows the on-premises data center to connect to separate VPCs while maintaining traffic isolation via VLAN tagging, and it maximizes bandwidth utilization by sharing the single connection's capacity across all VIFs.

Answer

Use AWS Transit Gateway to connect all VPCs and the Direct Connect gateway, then configure route tables to isolate traffic.

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Provision multiple Direct Connect connections, one for each VPC, and use a different VLAN on each connection.

Answer

Establish a single Direct Connect connection and use IPsec VPN tunnels over it to connect to each VPC.