A company needs the ability to acquire resources when the resources are needed. The company also needs the ability to release the resources when the resources are no longer needed.
Which AWS concept represents the company's goals?
A. Scalability
B. Sustainability
C. Elasticity
D. Operational excellence
Show Answer
Correct Answer: C
Explanation: The requirement to acquire resources on demand and release them when no longer needed describes elasticity in AWS. Elasticity focuses on dynamically scaling resources up or down to match current demand, minimizing overprovisioning and cost.
Question 43
A company needs to create and publish interactive business intelligence dashboards. The dashboards require insights that are powered by machine learning.
Which AWS service or tool will meet these requirements?
A. AWS Glue Studio
B. Amazon QuickSight
C. Amazon Redshift
D. Amazon Athena
Show Answer
Correct Answer: B
Explanation: Amazon QuickSight is a fully managed, serverless business intelligence service designed to create and publish interactive dashboards. It includes built-in machine learning capabilities (QuickSight ML and ML Insights) for anomaly detection, forecasting, and natural language queries, which directly satisfies the requirement for ML-powered insights. The other options are data integration or query services, not BI dashboard tools.
Question 44
Which action should a company take to improve security in its AWS account?
A. Require multi-factor authentication (MFA) for privileged users.
B. Remove the root user account.
C. Create an access key for the AWS account root user.
D. Create an access key for each privileged user.
Show Answer
Correct Answer: A
Explanation: Requiring multi-factor authentication (MFA) for privileged users significantly strengthens account security by adding an additional verification factor beyond passwords, reducing the risk of unauthorized access even if credentials are compromised. The other options either weaken security or are not best practices.
Question 45
A company wants to organize its users so that the company can grant permissions to the users as a group.
Which AWS service or tool can the company use to meet this requirement?
A. Security groups
B. AWS Identity and Access Management (IAM)
C. Resource groups
D. AWS Security Hub
Show Answer
Correct Answer: B
Explanation: AWS Identity and Access Management (IAM) lets you organize users into groups and attach permissions to those groups, enabling permission management at the group level. The other options do not manage user permissions as groups.
Question 46
A company deploys its application on Amazon EC2 instances. The application occasionally experiences sudden increases in demand. The company wants to ensure that its application can respond to changes in demand at the lowest possible cost.
Which AWS service or concept will meet these requirements?
A. AWS Auto Scaling
B. AWS Compute Optimizer
C. AWS Cost Explorer
D. AWS Well-Architected Framework
Show Answer
Correct Answer: A
Explanation: AWS Auto Scaling automatically adjusts the number of EC2 instances in response to changes in demand. This allows the application to scale out during sudden traffic spikes and scale in when demand decreases, ensuring responsiveness while minimizing costs by only using required capacity.
Question 47
A company's employees are working from home. The company wants its employees to use their personal devices to connect to a managed workstation in the AWS Cloud.
Which AWS service should the company use to provide the remote environment?
A. Amazon Workspaces
B. AWS Cloud9
C. AWS Outposts
D. Amazon Lightsail
Show Answer
Correct Answer: A
Explanation: Amazon WorkSpaces provides fully managed virtual desktops in the AWS Cloud that employees can securely access from their personal devices. It is specifically designed for remote work and managed workstation environments, unlike Cloud9 (developer IDE), Outposts (on-premises AWS infrastructure), or Lightsail (simple VPS hosting).
Question 48
Which benefit of the AWS Cloud helps companies achieve lower usage costs because of the aggregate usage of all AWS users?
A. No need to guess capacity
B. Ability to go global in minutes
C. Economies of scale
D. Increased speed and agility
Show Answer
Correct Answer: C
Explanation: The benefit that leads to lower usage costs due to the combined usage of all AWS customers is economies of scale. AWS operates infrastructure at massive scale, reducing per-unit costs and passing those savings on to customers.
Question 49
A company is planning to migrate a monolithic application to AWS. The company wants to modernize the application by splitting it into microservices. The company will deploy the microservices on AWS.
Which migration strategy should the company use?
A. Rehost
B. Repurchase
C. Replatform
D. Refactor
Show Answer
Correct Answer: D
Explanation: Splitting a monolithic application into microservices requires significant architectural changes and code modification, which aligns with the Refactor (re-architect) migration strategy. Other options do not involve redesigning the application architecture.
Question 50
Which AWS service can generate information that can be used by external auditors?
A. Amazon Cognito
B. Amazon FSx
C. AWS Config
D. Amazon Inspector
Show Answer
Correct Answer: C
Explanation: AWS Config records and maintains a history of AWS resource configurations, tracks changes over time, and evaluates compliance against rules. This information can be exported and reviewed by external auditors to verify compliance with internal controls, regulatory requirements, and best practices.
Question 51
A company needs to use Amazon S3 to store audio files that are each 5 megabytes in size. The company will rarely access the files, but the company must be able to retrieve the files immediately.
Which S3 storage class will meet these requirements MOST cost-effectively?
A. S3 Standard
B. S3 Standard-Infrequent Access (S3 Standard-IA)
C. S3 Glacier Flexible Retrieval
D. S3 Glacier Deep Archive
Show Answer
Correct Answer: B
Explanation: The files are rarely accessed but must be available immediately when needed. S3 Standard-Infrequent Access (Standard-IA) is designed for this access pattern, offering lower storage cost than S3 Standard while still providing millisecond access. Glacier Flexible Retrieval and Deep Archive do not meet the immediate retrieval requirement, as they involve retrieval delays.
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