A) AWS Lambda
B) Amazon EC2
C) AWS Elastic Beanstalk
D) Amazon RDSAnswer: A) AWS Lambda
Explanation: AWS Lambda is a serverless compute service that automatically runs code in response to events without requiring server management.
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A) Low-latency database queries
B) Highly scalable object storage
C) Real-time data streaming
D) In-memory cachingAnswer: B) Highly scalable object storage
Explanation: Amazon S3 (Simple Storage Service) provides scalable, durable, and secure object storage for files, backups, and data lakes.
A) On-Demand
B) Spot Instances
C) Reserved Instances
D) Pay-As-You-GoAnswer: C) Reserved Instances
Explanation: Reserved Instances (RIs) provide significant discounts (up to 75%) compared to On-Demand pricing in exchange for a 1- or 3-year commitment.
A) Amazon CloudFront
B) AWS Direct Connect
C) Amazon Route 53
D) AWS Global AcceleratorAnswer: A) Amazon CloudFront
Explanation: CloudFront is a CDN that caches content at edge locations worldwide to reduce latency and improve performance.
A) Unauthorized access to S3 buckets
B) DDoS attacks
C) Malware infections
D) Data corruptionAnswer: B) DDoS attacks
Explanation: AWS Shield is a managed DDoS protection service that safeguards applications running on AWS.
A) Amazon DynamoDB
B) Amazon RDS
C) Amazon Redshift
D) Amazon ElastiCacheAnswer: B) Amazon RDS
Explanation: Amazon RDS (Relational Database Service) simplifies the setup, operation, and scaling of relational databases like MySQL, PostgreSQL, and SQL Server.
A) To monitor network traffic
B) To manage user permissions and access control
C) To automate infrastructure deployments
D) To optimize cost savingsAnswer: B) To manage user permissions and access control
Explanation: IAM enables secure control over AWS resource access through users, groups, roles, and policies.
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A) Amazon QuickSight
B) AWS CloudTrail
C) Amazon Kinesis
D) AWS ConfigAnswer: A) Amazon QuickSight
Explanation: QuickSight is a business intelligence (BI) tool for creating interactive dashboards and visualizations.
A) Using a single Availability Zone (AZ)
B) Deploying resources across multiple AZs
C) Relying on manual backups
D) Avoiding auto-scalingAnswer: B) Deploying resources across multiple AZs
Explanation: Distributing workloads across multiple AZs ensures high availability and fault tolerance.
A) AWS Trusted Advisor
B) AWS CloudFormation
C) AWS Systems Manager
D) AWS OrganizationsAnswer: A) AWS Trusted Advisor
Explanation: Trusted Advisor offers real-time guidance to optimize costs, security, performance, and reliability.
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