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What are the key components of AWS?
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Answer: Some of key components of AWS are:
• Compute (e.g., EC2, Lambda)
• Storage (e.g., S3, EBS)
• Databases (e.g., RDS, DynamoDB)
• Networking (e.g., VPC, Route 53)
• Security and Identity (e.g., IAM, KMS)
• Management Tools (e.g., CloudWatch, CloudFormation)
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Question: What is EC2?
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Answer: Amazon EC2 (Elastic Compute Cloud) is a web service that provides resizable compute capacity in the cloud.
It allows users to rent virtual machines (instances) and run applications on them.
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Question: Explain S3 and its use cases?
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Answer: Amazon S3 (Simple Storage Service) is object storage built to store and retrieve any amount of data from anywhere.
Its use cases include website hosting, data backup and archiving, application data and media storage, and big data analytics.
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Question: What is a VPC and why is it used?
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Answer: A VPC (Virtual Private Cloud) is a virtual network dedicated to an AWS account.
It allows users to launch AWS resources in a logically isolated section of the AWS Cloud.
VPC provides control over network configuration, such as IP addressing, subnets, route tables, and network gateways.
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Question: What is the difference between IAM roles, users, and groups?
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Answer: The IAM (Identity and Access Management) roles are temporary permissions that grant applications running on
EC2 instances access to other AWS services. Users are individual entities that interact with AWS and can have associated credentials.
Groups are collections of users, which can be managed collectively, simplifying permissions management.
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Question: What is auto-scaling in AWS?
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Answer: AWS Auto Scaling allows one to automatically adjust the number of EC2 instances in a fleet based on demand.
It helps maintain application availability and allows for cost optimization by scaling in during low-demand periods and scaling out
during high-demand periods.
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Question: Explain the difference between RDS and DynamoDB?
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Answer: Amazon RDS (Relational Database Service) is a managed relational database service that supports multiple
database engines like MySQL, PostgreSQL, Oracle, and SQL Server.
The DynamoDB on the other hand is a fully managed NoSQL database service provided by AWS.
While RDS is suitable for traditional relational databases, DynamoDB is designed for applications requiring
single-digit millisecond latency with flexible data models.
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