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Cloud computing is necessary for organizations of all sizes, from large enterprises to small startups. Amazon Web Services (AWS) is a cloud provider with the largest customer share. An AWS SysOps Administrator operates and maintains the AWS infrastructure while handling cybersecurity, which is a high-demand skill.

This course provides in-depth coverage of core AWS Services, including EC2, Auto Scaling, ELB, VPC, IAM, S3, RDS, and more. You’ll learn AWS best practices for security, compliance, automation, monitoring, and troubleshooting through practical hands-on labs for key topics. You’ll test your knowledge by attempting quizzes and two full-length sample AWS SysOps Administrator - Associate practice exams at the end. 

By the end of the course, you’ll have gained practical experience through real-world examples and hands-on labs in administering systems and applications running on AWS to ace the AWS Certified SysOps Administrator - Associate exam.

AWS Certified SysOps Administrator - Associate Exam Prep

# Introduction
In the widget below, we'll take the following steps:
1. Start by creating a VPC.
    * View VPC configuration.
    * View the default NACL.
    * View the main route table.
2. Create a private subnet in the VPC. When a VPC is created, its main route table only has a local route. This means any new subnets will have no access to the internet and are private. 
3. Create a new internet gateway.
4. Attach the newly created internet gateway to our custom VPC. Note that this step won’t enable internet access for resources in the VPC. To allow internet access, the route table of a subnet must have a route to the internet gateway.
5. Create a new route table and add a route to the internet gateway. This means that any subnet associated with this route table is public and will now have access to the internet.
6. Create a new subnet that we want to be public. This subnet is private for now.
7. Attach our custom route table to the new subnet. The custom route table has a route to the internet gateway, so this subnet is now public. 
8. Enable the `auto-assign-public-ip` setting for our public subnet so that new instances have a public IP and can be accessed from the internet.
9. Create a NAT gateway in the public subnet. This step doesn’t allow internet access in the private subnet automatically.
10. Create a route to the NAT gateway in the private subnet route table. This step will allow resources in the private subnet to access the internet while remaining inaccessible from it.
11. Create EC2 instances with a web page in both subnets.
12. Use the public IP (EC2 is a public subnet, so it has a public IP) to access the web page launched on this EC2 instance. EC2 in the private subnet doesn’t have a public IP. Even if we were to assign a public IP to this instance manually, it would remain inaccessible from the internet because its subnet has no route to the internet gateway.
13. SSH into the public subnet EC2 and access the web page on the private subnet EC2 instance using its private IP. Both instances are in the same network; therefore, they can access each other using private IP addresses.

> **Note:** We use the `yum install` command in our EC2 user data script to install `httpd`. This command will only execute successfully if the EC2 instance has access to the internet. The web page successfully launches in the private subnet. Therefore, we can be sure that the private subnet has access to the internet via the NAT gateway.





Build on your understanding of AWS VPCs and their components in this practical.


Introduction

Getting Started with AWS

AWS IAM

AWS EC2

AWS Load Balancers and Auto Scaling Groups

AWS Storage Services

AWS Databases

AWS ElastiCache

AWS Elastic Beanstalk and CloudFront

AWS CloudFormation

AWS Monitoring

AWS VPC

AWS Route 53

AWS Security Services and Encryption

AWS Systems Manager

Important AWS Services

AWS SysOps Administrator Practice Exams

Practical

Introduction