Amazon Web Services (AWS) EC2 Instances

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Questions and Answers

What is the purpose of a key pair in an EC2 instance?

To configure the firewall for the instance

To identify the instance in an environment with many instances

To access the instance and provide secure login (correct)

To add storage to the instance using EBS or S3

What is the main purpose of tags in EC2 instances?

To add storage to the instance using EBS or S3

To launch the instance with specific configurations

To configure the firewall for the instance

To identify the instance in an environment with many instances (correct)

What is the purpose of SNS in the context of EC2 instances?

To notify customers about new products by creating a topic and adding subscribers (correct)

To add storage to the instance using EBS or S3

To configure the instance with software installations

To launch the instance with specific configurations

What is the purpose of bootstrap scripts in EC2 instances?

To configure the instance with software installations before it's handed over to the user Signup and view all the answers

What is the purpose of security groups in EC2 instances?

To configure the firewall for the instance Signup and view all the answers

What is the purpose of a public IP address in EC2 instances?

To provide access to the instance from the internet Signup and view all the answers

What is the primary reason the scientist's computer is unable to handle the complex calculation?

The computer has low memory Signup and view all the answers

What is the primary benefit of using EC2?

It provides secure and resizable compute capacity in the cloud Signup and view all the answers

What is the purpose of an AMI in creating an EC2 instance?

To provide a template for the instance with software, operating system, and applications Signup and view all the answers

How many main families of instance types are available in EC2?

5 Signup and view all the answers

What is a use case for EC2, SNS, and S3?

Sending notifications to users about new products Signup and view all the answers

What is AWS?

A cloud-based service that provides computing power, storage, database management, and more Signup and view all the answers

What is a necessary step before launching an EC2 instance?

Creating a key pair Signup and view all the answers

What is the primary function of IAM roles in EC2 instances?

Assigning permissions Signup and view all the answers

What is the purpose of EBS in EC2 instances?

Adding storage to the instance Signup and view all the answers

What is the function of PuTTYgen in the context of EC2 instances?

Converting the.pem file to a.ppk file Signup and view all the answers

What is the purpose of S3 in the context of EC2 instances?

Storing content Signup and view all the answers

What is the benefit of using reserved instances in EC2?

Reduced cost Signup and view all the answers

What is the primary advantage of using EC2 instead of a local computer?

EC2 provides secure and resizable compute capacity in the cloud Signup and view all the answers

Which of the following is NOT a feature of AWS?

Backup and recovery Signup and view all the answers

What determines the hardware specifications of an EC2 instance?

The instance type Signup and view all the answers

Which of the following is an example of a custom AMI?

An AMI created by a user with a specific operating system Signup and view all the answers

What is the benefit of using a cloud-based service like AWS?

It provides the ability to scale up or down based on demand Signup and view all the answers

What is the purpose of configuring the firewall when creating an EC2 instance?

To control incoming and outgoing network traffic Signup and view all the answers

Study Notes

Here is a summary of the text in detailed bullet points:

• A scientist has a lab in the woods and needs to solve a complex calculation, but his computer is unable to handle it due to low memory.

• The scientist is introduced to AWS, which replaces his old machines and provides the computing power he needs.

• AWS is a cloud-based service that provides computing power, storage, database management, migration, network management, media services, security, business productivity, application integration, machine learning, and game development.

• EC2 is a web service offered by AWS that provides secure and resizable compute capacity in the cloud.

• With EC2, users can scale up or down their infrastructure based on demand, and only pay for what they use.

• A use case for EC2 is a business owner who wants to notify his customers about new products; he can use EC2, SNS, and S3 to create an architecture that sends notifications to users.

• To create an EC2 instance, users need to create an AMI, choose an instance type, configure the instance, add storage, add tags, and configure the firewall.

• An AMI is a template that contains the software, operating system, and additional applications needed for an instance.

• There are two types of AMIs: Amazon-provided AMIs and custom AMIs.

• The instance type determines the hardware specifications of the instance, and there are five main families: compute optimized, memory optimized, GPU optimized, storage optimized, and general purpose.

• Users can configure the instance by choosing the instance type, purchasing option, public IP address, IAM role, and shutdown behavior.

• Users can also add bootstrap scripts to configure the instance with software installations before it's handed over to the user.

• There are multiple payment options for EC2 instances, including on-demand, reserved, and spot instances.

• Users can add storage to the instance using EBS or S3.

• Tags are used to identify EC2 instances in an environment with many instances.

• Security groups are used to configure the firewall for the EC2 instance.

• Users can review and submit their configurations to launch the EC2 instance.

• Before launching the instance, users can create a key pair, which consists of a public and private key.

• The private key is downloaded as a.pem file and used to access the instance.

• Users can use PuTTY to access the instance, and PuTTYgen to convert the.pem file to a.ppk file.

• Once the instance is launched, users can use SNS to notify customers about new products by creating a topic and adding subscribers.

• Users can also create a bucket in S3 to store content and create an event that triggers a notification to SNS.

• Finally, users can connect the S3 bucket with the EC2 instance to ensure that content is in sync.

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Description

Learn how to use Amazon Web Services (AWS) to create scalable and secure computing resources with EC2 instances. This quiz covers the basics of EC2, including creating instances, choosing instance types, configuring storage and security, and integrating with other AWS services like SNS and S3.