AWS Essentials
EC2, S3, VPC, IAM, RDS, Lambda, CloudWatch, ELB, Auto Scaling, troubleshooting AWS service issues
1What is an EC2 instance in AWS?
What is an EC2 instance in AWS?
Відповідь
EC2 (Elastic Compute Cloud) is AWS's virtual server service, allowing users to rent computing capacity in the cloud. Unlike physical servers, EC2 instances launch in minutes and are billed by usage. EC2 is suitable for hosting web applications, databases, or any workload requiring full operating system control.
2What is the primary role of the S3 service?
What is the primary role of the S3 service?
Відповідь
S3 (Simple Storage Service) is AWS's object storage service, designed to store and retrieve unlimited amounts of data. Each object is identified by a unique key within a bucket. S3 is ideal for backups, static website hosting, data lakes, and media asset storage thanks to its 99.999999999% durability and various storage classes.
3What does a Security Group allow you to configure in AWS?
What does a Security Group allow you to configure in AWS?
Відповідь
A Security Group acts as a virtual firewall at the EC2 instance level, controlling inbound and outbound traffic through stateful rules. Rules allow connections by protocol, port, and source IP or CIDR. Security Groups are associated with instances and evaluate traffic before it reaches the instance, forming the first line of network defense.
What is a VPC in AWS?
Which AWS service should be used to run code without managing servers?
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