A company is migrating to the AWS Cloud instead of running its infrastructure on premises.
Which of the following are advantages of this migration? (Choose two.)
A. Elimination of the need to perform security auditing
B. Increased global reach and agility
C. Ability to deploy globally in minutes
D. Elimination of the cost of IT staff members
E. Redundancy by default for all compute services
Show Answer
Correct Answer: B, C
Explanation: Migrating to AWS provides increased global reach and agility through its worldwide infrastructure, and resources can be deployed globally within minutes. Security auditing remains part of the customer's responsibilities under the shared responsibility model, IT staff are not eliminated, and compute services are not redundant by default without appropriate architecture.
Question 143
Which AWS service or tool provides a visualization of historical AWS spending patterns and projections of future AWS costs?
A. AWS Cost and Usage Report
B. AWS Budgets
C. Cost Explorer
D. Amazon Cloud Watch
Show Answer
Correct Answer: C
Explanation: AWS Cost Explorer provides interactive visualizations of historical AWS spending and usage, along with forecasting to project future costs. AWS Budgets is used to set budget thresholds and alerts, Cost and Usage Report provides detailed raw billing data rather than visualizations, and Amazon CloudWatch monitors metrics and logs rather than billing trends.
Question 144
A company has an AWS Business Support plan. The company needs to gain access to the AWS DDoS Response Team (DRT) to help mitigate DDoS events.
Which AWS service or resource must the company use to meet these requirements?
A. AWS Shield Standard
B. AWS Enterprise Support
C. AWS WAF
D. AWS Shield Advanced
Show Answer
Correct Answer: D
Explanation: Access to the AWS DDoS Response Team (DRT), now referred to as the Shield Response Team (SRT) in documentation, is a feature of AWS Shield Advanced. A Business Support or Enterprise Support plan is also required to use the team, but the service that provides access is Shield Advanced. Shield Standard does not include DRT access, AWS WAF is not sufficient by itself, and Enterprise Support alone does not grant DRT access.
Sources:
https://docs.aws.amazon.com/waf/latest/developerguide/ddos-srt-support.html
https://aws.amazon.com/about-aws/whats-new/2017/11/aws-shield-adds-advanced-ddos-protection-for-ec2-and-network-load-balancer
Question 145
A company wants a cost-effective option when running its applications in an Amazon EC2 instance for short time periods. The applications can be interrupted.
Which EC2 instance type will meet these requirements?
A. Spot Instances
B. On-Demand Instances
C. Reserved Instances
D. Dedicated Instances
Show Answer
Correct Answer: A
Explanation: Spot Instances are the most cost-effective option for workloads that can tolerate interruptions and run for short periods. AWS can reclaim Spot capacity with short notice, which is why Spot pricing is significantly lower than On-Demand. On-Demand, Reserved, and Dedicated Instances are intended for different cost and capacity needs and do not match the interruption requirement.
Sources:
https://aws.amazon.com/blogs/ibm-redhat/cut-costs-scale-smarter-with-rosa-karpenter-automates-compute-provisioning
Question 146
A company wants the ability to automatically acquire resources as needed and release the resources when they are no longer needed.
Which cloud concept describes this functionality?
A. Availability
B. Elasticity
C. Durability
D. Reliability
Show Answer
Correct Answer: B
Explanation: Elasticity is the cloud computing capability to automatically scale resources up or down based on demand, acquiring resources when needed and releasing them when demand decreases. Availability refers to uptime, durability to data persistence, and reliability to consistent operation.
Question 147
A company wants to track the monthly cost and usage of all Amazon EC2 instances in a specific AWS environment.
Which AWS service or tool will meet these requirements?
A. AWS Cost Anomaly Detection
B. AWS Budgets
C. AWS Compute Optimizer
D. AWS Trusted Advisor
Show Answer
Correct Answer: B
Explanation: AWS Budgets can track monthly cost and usage, including for Amazon EC2, with customizable budgets, filters, and alerts. Cost Anomaly Detection identifies unusual spending rather than routine monthly tracking, Compute Optimizer provides rightsizing recommendations, and Trusted Advisor offers best practice checks rather than detailed monthly cost and usage tracking.
Question 148
Which AWS service integrates with other AWS services to provide the ability to encrypt data at rest?
A. AWS Key Management Service (AWS KMS)
B. AWS Certificate Manager (ACM)
C. AWS Identity and Access Management (IAM)
D. AWS Security Hub
Show Answer
Correct Answer: A
Explanation: AWS Key Management Service (AWS KMS) integrates with many AWS services (such as Amazon S3, EBS, RDS, and others) to manage encryption keys and enable encryption of data at rest. ACM manages SSL/TLS certificates for data in transit, IAM manages identities and permissions, and Security Hub aggregates security findings rather than providing encryption.
Question 149
A company migrated its systems to the AWS Cloud. The systems are rightsized, and a security review did not reveal any issues. The company must ensure that additional developments, integrations, changes, and system usage growth do not jeopardize this optimized AWS infrastructure.
Which AWS service should the company use to report ongoing optimization and security?
A. AWS Trusted Advisor
B. AWS Health Dashboard
C. Amazon Connect
D. AWS Systems Manager
Show Answer
Correct Answer: A
Explanation: AWS Trusted Advisor continuously analyzes AWS environments and provides ongoing recommendations for cost optimization, performance, security, fault tolerance, and service limits. It is the AWS service designed to report ongoing optimization and security improvements after migration. AWS Health Dashboard reports AWS service events, Amazon Connect is a contact center service, and AWS Systems Manager is for operational management rather than optimization reporting.
Question 150
A company has a workload that will run continuously for 1 year. The workload cannot tolerate service interruptions.
Which Amazon EC2 purchasing option will be MOST cost-effective?
A. All Upfront Reserved Instances
B. Partial Upfront Reserved Instances
C. Dedicated Instances
D. On-Demand Instances
Show Answer
Correct Answer: A
Explanation: For a workload that runs continuously for one year and cannot tolerate interruptions, a 1-year Standard Reserved Instance with All Upfront payment provides the greatest discount among the listed options. On-Demand is more expensive, Dedicated Instances add cost for isolation, and Partial Upfront Reserved Instances are discounted but not as much as All Upfront.
Question 151
Which AWS service or tool provides users with a graphical interface that they can use to manage AWS services?
A. AWS Copilot
B. AWS CLI
C. AWS Management Console
D. AWS software development kits (SDKs)
Show Answer
Correct Answer: C
Explanation: The AWS Management Console is the web-based graphical user interface (GUI) for managing AWS services. AWS CLI is a command-line tool, SDKs are programming libraries, and AWS Copilot is a developer tool for deploying containerized applications.
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