A company wants to launch multiple workloads on AWS. Each workload is related to a different business unit. The company wants to separate and track costs for each business unit.
Which solution will meet these requirements with the LEAST operational overhead?
A. Use AWS Organizations and create one account for each business unit.
B. Use a spreadsheet to control the owners and cost of each resource.
C. Use an Amazon DynamoDB table to record costs for each business unit.
D. Use the AWS Billing console to assign owners to resources and track costs.
Show Answer
Correct Answer: A
Explanation: The requirement is to separate and track costs per business unit with the least operational overhead. AWS Organizations with one account per business unit provides built-in, automatic cost separation at the account level, consolidated billing, and native cost reporting without needing manual tagging, custom tracking systems, or ongoing administrative processes. The other options rely on manual processes or custom solutions that add operational overhead and are not designed for scalable, reliable cost allocation.
Question 343
A company is migrating its on-premises server to an Amazon EC2 instance. The server must stay active at all times for the next 12 months.
Which EC2 pricing option is the MOST cost-effective for the company's workload?
A. On-Demand
B. Dedicated Hosts
C. Spot Instances
D. Reserved Instances
Show Answer
Correct Answer: D
Explanation: The workload must run continuously for the next 12 months, making it a predictable, steady-state usage. Reserved Instances provide significant discounts compared to On-Demand pricing when committing to a 1-year term, and they are far more suitable than Spot Instances, which can be interrupted, or Dedicated Hosts, which are typically more expensive. Therefore, Reserved Instances are the most cost-effective option.
Question 344
A company is migrating to the AWS Cloud and plans to run experimental workloads for 3 to 6 months on AWS.
Which pricing model will meet these requirements?
A. Use Savings Plans for a 3-year term.
B. Use Dedicated Hosts.
C. Buy Reserved Instances.
D. Use On-Demand Instances.
Show Answer
Correct Answer: D
Explanation: The workloads are experimental and will run only for 3–6 months, requiring flexibility with no long-term commitment. On-Demand Instances allow pay-as-you-go usage without upfront costs or contracts, making them ideal for short-term or uncertain workloads. Savings Plans and Reserved Instances require longer commitments, and Dedicated Hosts are unnecessary and costly for this use case.
Question 345
Which AWS service provides the ability to host a NoSQL database in the AWS Cloud?
A. Amazon Aurora
B. Amazon DynamoDB
C. Amazon RDS
D. Amazon Redshift
Show Answer
Correct Answer: B
Explanation: Amazon DynamoDB is a fully managed NoSQL key-value and document database service provided by AWS. Amazon Aurora and Amazon RDS are relational database services, and Amazon Redshift is a data warehouse, not a NoSQL database.
Question 346
A company needs to move 75 petabytes of data from its on-premises data centers to AWS.
Which AWS service should the company use to meet these requirements MOST cost-effectively?
A. AWS Snowball Edge Storage Optimized
B. AWS Snowmobile
C. AWS Direct Connect
D. AWS Storage Gateway
Show Answer
Correct Answer: B
Explanation: The requirement is to move an extremely large volume of data (75 PB) to AWS in the most cost-effective way. AWS Snowmobile is specifically designed for massive data migrations at the exabyte scale, supporting transfers of up to 100 PB per Snowmobile unit. It is far more economical and practical than network-based options for this scale. Snowball Edge is better suited for smaller-scale transfers (terabytes to low petabytes), Direct Connect would take too long and be costly for 75 PB, and Storage Gateway is not intended for bulk one-time migrations.
Question 347
A company wants to integrate natural language processing (NLP) into business intelligence (BI) dashboards. The company wants to ask questions and receive answers with relevant visualizations.
Which AWS service or tool will meet these requirements?
A. Amazon Macie
B. Amazon Rekognition
C. Amazon QuickSight Q
D. Amazon Lex
Show Answer
Correct Answer: C
Explanation: The requirement is to ask questions in natural language and receive answers with relevant visualizations embedded in BI dashboards. Amazon QuickSight Q provides NLP-powered querying over datasets and automatically generates visual insights, which directly matches this use case. The other options focus on data security (Macie), image/video analysis (Rekognition), or conversational bots (Lex), not BI dashboards with visual analytics.
Question 348
When a user wants to utilize their existing per-socket, per-core, or per-virtual machine software licenses for a Microsoft Windows server running on AWS, which Amazon EC2 instance type is required?
A. Spot Instances
B. Dedicated Instances
C. Dedicated Hosts
D. Reserved Instances
Show Answer
Correct Answer: C
Explanation: Using existing per-socket, per-core, or per-virtual machine Microsoft Windows licenses on AWS requires full visibility and control over the physical server. Amazon EC2 Dedicated Hosts provide this capability by allocating an entire physical host to a customer, enabling bring-your-own-license (BYOL) scenarios that are not supported by Spot, Reserved, or standard Dedicated Instances.
Question 349
Which of the following AWS services are serverless? (Choose two.)
A. AWS Outposts
B. Amazon EC2
C. Amazon Elastic Kubernetes Service (Amazon EKS)
D. AWS Fargate
E. AWS Lambda
Show Answer
Correct Answer: D, E
Explanation: Serverless services abstract away server provisioning and management. AWS Fargate is a serverless compute engine for containers where AWS manages the underlying infrastructure. AWS Lambda is a fully serverless compute service for running code without managing servers. The other options (Outposts, EC2, and EKS) require managing or interacting with servers or clusters.
Question 350
Which AWS service provides a single location to track the progress of application migrations?
A. AWS Application Discovery Service
B. AWS Application Migration Service
C. AWS Service Catalog
D. AWS Migration Hub
Show Answer
Correct Answer: D
Explanation: AWS Migration Hub provides a central location to track the progress of application migrations across AWS migration tools, offering visibility into migration status and tasks in one place.
Question 351
A company wants to allow users to authenticate and authorize multiple AWS accounts by using a single set of credentials.
Which AWS service or resource will meet this requirement?
A. AWS Organizations
B. IAM user
C. AWS IAM Identity Center (AWS Single Sign-On)
D. AWS Control Tower
Show Answer
Correct Answer: C
Explanation: AWS IAM Identity Center (formerly AWS Single Sign-On) provides centralized authentication and authorization using a single set of credentials across multiple AWS accounts. It integrates with AWS Organizations and allows users to sign in once and access resources in all permitted accounts, which directly meets the requirement.
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