Which feature of Amazon RDS provides the ability to automatically create a primary database instance and to synchronously replicate data to an instance in another Availability Zone?
A. Read replicas
B. Blue/green deployment
C. Multi-AZ deployment
D. Reserved Instances
Show Answer
Correct Answer: C
Explanation: Amazon RDS Multi-AZ deployments automatically provision and maintain a synchronous standby replica in a different Availability Zone. Data is synchronously replicated to provide high availability and automatic failover. Read replicas use asynchronous replication, Blue/Green deployments are for safer updates, and Reserved Instances are a pricing option.
Question 273
A company is moving some of its on-premises IT services to the AWS Cloud. The finance department wants to see the entire bill so it can forecast spending limits.
Which AWS service can the company use to set spending limits and receive notifications if those limits are exceeded?
A. AWS Cost and Usage Reports
B. AWS Budgets
C. AWS Organizations consolidated billing
D. Cost Explorer
Show Answer
Correct Answer: B
Explanation: AWS Budgets allows organizations to set custom cost or usage budgets, define spending limits, and receive alerts (such as via email or Amazon SNS) when actual or forecasted spending exceeds configured thresholds. Cost Explorer analyzes costs, Cost and Usage Reports provide detailed billing data, and consolidated billing aggregates bills across accounts but does not set budget alerts.
Question 274
Which AWS service or feature gives users the ability to connect VPCs and on-premises networks to a central hub?
A. Virtual private gateway
B. AWS Transit Gateway
C. Internet gateway
D. Customer gateway
Show Answer
Correct Answer: B
Explanation: AWS Transit Gateway is a managed network transit hub that connects multiple VPCs and on-premises networks using a hub-and-spoke architecture. A virtual private gateway terminates VPNs on a single VPC, an internet gateway provides internet access, and a customer gateway represents the on-premises VPN endpoint.
Question 275
A company will run a predictable compute workload on Amazon EC2 instances for the next 3 years. The workload is critical for the company. The company wants to optimize costs to run the workload.
Which solution will meet these requirements?
A. Spot Instances
B. Dedicated Hosts
C. Savings Plans
D. On-Demand Instances
Show Answer
Correct Answer: C
Explanation: Savings Plans are designed for predictable, long-term compute usage and provide significant discounts over On-Demand pricing in exchange for a 1- or 3-year commitment. They preserve availability because you still use standard EC2 capacity, unlike Spot Instances, which can be interrupted. Dedicated Hosts are primarily for licensing/compliance needs rather than cost optimization. On-Demand Instances provide flexibility but are more expensive for a steady 3-year workload.
Question 276
A company is using AWS for all its IT infrastructure. The company's developers are allowed to deploy applications on their own. The developers want to deploy their applications without having to provision the infrastructure themselves.
Which AWS service should the developers use to meet these requirements?
A. AWS CloudFormation
B. AWS CodeBuild
C. AWS Elastic Beanstalk
D. AWS CodeDeploy
Show Answer
Correct Answer: C
Explanation: AWS Elastic Beanstalk allows developers to deploy applications without provisioning or managing the underlying infrastructure. It automatically handles capacity provisioning, load balancing, Auto Scaling, and application deployment while developers focus on their code.
Question 277
Which AWS Support plan provides the full set of AWS Trusted Advisor checks at the LOWEST cost?
A. AWS Developer Support
B. AWS Business Support
C. AWS Enterprise On-Ramp Support
D. AWS Enterprise Support
Show Answer
Correct Answer: B
Explanation: AWS Business Support is the lowest-cost AWS Support plan that includes the full set of AWS Trusted Advisor checks. Developer Support includes only a limited subset of Trusted Advisor checks, while Enterprise On-Ramp and Enterprise Support also include the full set but at higher cost.
Question 278
A company is requesting Payment Card Industry (PCI) reports that validate the operating effectiveness of AWS security controls.
How should the company obtain these reports?
A. Contact AWS Support.
B. Download reports from AWS Artifact.
C. Download reports from AWS Security Hub.
D. Contact an AWS technical account manager (TAM).
Show Answer
Correct Answer: B
Explanation: AWS Artifact provides on-demand access to AWS compliance reports and security documentation, including PCI DSS reports and attestations that customers use to validate the operating effectiveness of AWS security controls. AWS Support, Security Hub, and a TAM are not the standard mechanism for obtaining these compliance reports.
Question 279
A company has batch workloads that need to run for short periods of time on Amazon EC2. The workloads can handle interruptions and can start again from where they ended.
What is the MOST cost-effective EC2 instance purchasing option to meet these requirements?
A. Reserved Instances
B. Spot Instances
C. Dedicated Instances
D. On-Demand Instances
Show Answer
Correct Answer: B
Explanation: Spot Instances are the most cost-effective EC2 purchasing option for fault-tolerant, interruptible batch workloads. Because the workloads can tolerate interruptions and resume from where they stopped, they are well suited to Spot Instances, which offer significant discounts compared to On-Demand pricing in exchange for possible interruption. Reserved Instances are intended for predictable, long-term usage commitments, Dedicated Instances are for isolation/compliance needs and are more expensive, and On-Demand Instances cost more than Spot for this use case.
Question 280
Which of the following are ways to improve security on AWS? (Choose two.)
A. Using AWS Artifact
B. Granting the broadest permissions to all IAM roles
C. Running application code with AWS Cloud
D. Enabling multi-factor authentication (MFA) with Amazon Cognito
E. Using AWS Trusted Advisor security checks
Show Answer
Correct Answer: D, E
Explanation: Enabling multi-factor authentication (MFA) strengthens authentication and is a standard AWS security best practice. AWS Trusted Advisor includes security checks that help identify security risks and improve the security posture. AWS Artifact is primarily a compliance reporting service, not a security improvement mechanism. Granting broad IAM permissions violates least privilege, and 'AWS Cloud' is not a service for securely running application code.
Question 282
A company's application is running on Amazon EC2 instances. The company is planning a partial migration to a serverless architecture in the next year and wants to pay for resources up front.
Which AWS purchasing option will optimize the company's costs?
A. Convertible Reserved Instances
B. Spot Instances
C. EC2 Instance Savings Plans
D. Compute Savings Plan
Show Answer
Correct Answer: D
Explanation: Compute Savings Plans are the most flexible purchasing option for this scenario. They allow an upfront commitment while applying discounts across Amazon EC2, AWS Lambda, and AWS Fargate. Because the company plans to migrate part of its workload from EC2 to a serverless architecture within the commitment term, Compute Savings Plans preserve savings as usage shifts. EC2 Instance Savings Plans apply only to EC2, Convertible Reserved Instances do not cover serverless services, and Spot Instances are not an upfront commitment purchasing option.
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