A company wants to migrate critical on-premises production systems to Amazon EC2 instances. The production instances will be used for at least 3 years. The company wants a pricing option that will minimize cost.
Which solution will meet these requirements?
A. On-Demand Instances
B. Reserved Instances
C. Spot Instances
D. AWS Free Tier
Show Answer
Correct Answer: B
Explanation: Reserved Instances are designed for predictable, long-running EC2 workloads with 1-year or 3-year terms and provide significant cost savings compared to On-Demand pricing. Spot Instances can be interrupted and are not suitable for critical production systems. On-Demand is more expensive for steady 3-year usage, and the AWS Free Tier does not apply to long-term production workloads.
Sources:
https://docs.aws.amazon.com/wellarchitected/latest/cost-optimization-pillar/select-the-best-pricing-model.html
Question 113
A company has moved all its infrastructure to the AWS Cloud. To plan ahead for each quarter, the finance team wants to track the cost and usage data of all resources from previous months. The finance team wants to automatically generate reports that contains the data.
Which AWS service or feature should the finance team use to meet these requirements?
A. Amazon Detective
B. AWS Pricing Calculator
C. AWS Budgets
D. AWS Savings Plans
Show Answer
Correct Answer: C
Explanation: AWS Budgets tracks costs and usage against budgeted amounts, supports historical cost and usage views, and can automatically generate and deliver budget reports/notifications. The other options do not provide automated historical cost and usage reporting: Amazon Detective is for security investigations, AWS Pricing Calculator estimates future costs, and Savings Plans are a pricing model for discounts.
Question 114
A company wants to deploy a web application as a containerized application. The company wants to use a managed service that can automatically create container images from source code and deploy the containerized application.
Which AWS service will meet these requirements?
A. AWS Elastic Beanstalk
B. Amazon Elastic Container Service (Amazon ECS)
C. AWS App Runner
D. Amazon EC2
Show Answer
Correct Answer: C
Explanation: AWS App Runner is the managed service designed to automatically build container images from source code and deploy containerized web applications. Amazon ECS orchestrates containers but does not automatically build images from source code by itself. Elastic Beanstalk can deploy applications and Docker workloads, but the service specifically matching automatic image creation from source code and deployment is App Runner. Amazon EC2 is unmanaged infrastructure.
Question 115
A company wants to migrate to the AWS Cloud. The company needs the ability to acquire resources when the resources are necessary. The company also needs the ability to release those resources when the resources are no longer necessary.
Which architecture concept of the AWS Cloud meets these requirements?
A. Elasticity
B. Availability
C. Reliability
D. Durability
Show Answer
Correct Answer: A
Explanation: Elasticity is the AWS Cloud architectural concept that allows resources to be automatically or manually provisioned when demand increases and released when demand decreases, so customers pay for and use only the resources they need. Availability refers to uptime, reliability to consistent operation, and durability to long-term data persistence.
Question 116
A company wants to build graph queries for real-time fraud pattern detection.
Which AWS service will meet this requirement?
A. Amazon Neptune
B. Amazon DynamoDB
C. Amazon Timestream
D. Amazon Forecast
Show Answer
Correct Answer: A
Explanation: Amazon Neptune is AWS's fully managed graph database service, designed for storing and querying highly connected data using graph models. Real-time fraud detection commonly relies on graph queries to identify suspicious relationships and patterns between entities. DynamoDB is a key-value/document database, Timestream is for time-series data, and Forecast is for time-series forecasting.
Question 117
A company that is planning to migrate to the AWS Cloud is based in an isolated area that has limited internet connectivity. The company needs to perform local data processing on premises. The company needs a solution that can operate without a stable internet connection.
Which AWS service will meet these requirements?
A. Amazon S3
B. AWS Snowball Edge
C. AWS Storage Gateway
D. AWS Backup
Show Answer
Correct Answer: B
Explanation: AWS Snowball Edge provides local storage and compute capabilities on premises and is designed to operate in environments with limited or intermittent network connectivity. It supports local data processing and can synchronize data with AWS when connectivity is available. Amazon S3 is cloud-based and requires network access, AWS Storage Gateway is intended for hybrid storage with ongoing connectivity to AWS, and AWS Backup is a backup management service rather than an offline processing solution.
Question 118
A company is planning to migrate to the AWS Cloud. The company is conducting organizational transformation and wants to become more responsive to customer inquiries and feedback.
Which task should the company perform to meet these requirements, according to the AWS Cloud Adoption Framework (AWS CAF)? (Choose two.)
A. Realign teams to focus on products and value streams.
B. Create new value propositions with new products and services.
C. Use agile methods to rapidly iterate and evolve.
D. Use a new data and analytics platform to create actionable insights.
E. Migrate and modernize legacy infrastructure.
Show Answer
Correct Answer: A, C
Explanation: According to the AWS Cloud Adoption Framework (AWS CAF), organizational transformation to improve responsiveness to customers involves evolving operating models and ways of working. Realigning teams around products and value streams improves customer focus, and adopting agile methods enables rapid iteration based on customer feedback. The other options relate more to business innovation, platform capabilities, or technology modernization rather than the specific organizational transformation practices asked for.
Question 119
Which benefits does a company gain when the company moves from on-premises IT architecture to the AWS Cloud? (Choose two.)
A. Reduced or eliminated tasks for hardware troubleshooting, capacity planning, and procurement
B. Elimination of the need for trained IT staff
C. Automatic security configuration of all applications that are migrated to the cloud
D. Elimination of the need for disaster recovery planning
E. Faster deployment of new features and applications
Show Answer
Correct Answer: A, E
Explanation: Moving to AWS reduces the operational burden of managing physical infrastructure, including hardware troubleshooting, capacity planning, and procurement. It also enables faster deployment of applications and features through on-demand infrastructure and managed services. Cloud adoption does not eliminate the need for IT staff, does not automatically secure all applications, and does not remove the need for disaster recovery planning, although AWS provides services to simplify it.
Sources:
https://docs.aws.amazon.com/prescriptive-guidance/latest/hybrid-cloud-best-practices/introduction.html
https://aws.amazon.com/blogs/storage/from-on-premises-to-aws-hybrid-cloud-architecture-for-network-file-shares
Question 120
A company has data lakes designed for high performance computing (HPC) workloads.
Which Amazon EC2 instance type should the company use to meet these requirements?
A. General purpose instances
B. Compute optimized instances
C. Memory optimized instances
D. Storage optimized instances
Show Answer
Correct Answer: B
Explanation: Compute optimized instances are designed for compute-intensive workloads, including high performance computing (HPC), scientific modeling, batch processing, and similar CPU-intensive applications. Storage optimized instances target high disk I/O workloads rather than compute-bound HPC tasks.
Question 121
A company wants to migrate its server-based applications to the AWS Cloud. The company wants to determine the total cost of ownership for its compute resources that will be hosted on the AWS Cloud.
Which combination of AWS services or tools will meet these requirements? (Choose two.)
A. AWS Pricing Calculator
B. Migration Evaluator
C. AWS Support Center
D. AWS Application Discovery Service
E. AWS Database Migration Service (AWS DMS)
Show Answer
Correct Answer: A, B
Explanation: AWS Pricing Calculator estimates the cost of AWS resources after migration. Migration Evaluator analyzes existing on-premises server environments, provides right-sizing recommendations, and produces total cost of ownership (TCO) comparisons between on-premises and AWS. AWS Application Discovery Service inventories workloads but does not calculate TCO by itself; AWS Support Center and AWS DMS are not TCO estimation tools.
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