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Questions and Answers
What type of storage volume can be added to an EC2 instance?
How many instances can be launched from a single AMI if they require the same configuration?
What is the root volume of an instance?
What is the purpose of configuring a security group for an Amazon EC2 instance?
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What are Amazon Machine Images (AMIs) preconfigured with?
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How many EBS volumes can be attached to an EC2 instance?
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What is the purpose of detaching the root volume from a failed EC2 instance and attaching it to another EC2 instance?
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Which type of EBS volume provides Better IOPS performance value than general-purpose SSDs?
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What is the main difference between Throughput Optimized HDD volumes (st1) and Cold HDD Volumes (sc1)?
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When configuring an EC2 instance with an EBS volume, what are the key configurations to select?
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What is the purpose of taking snapshots of EBS volumes?
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Which type of workload would benefit from using Provisioned IOPS SSD volumes?
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What is the pricing model that offers low prices in exchange for a commitment to a consistent amount of usage for a one or 3-year term?
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Which type of applications are suitable for Spot Instances?
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What is the main advantage of using AWS storage services over procuring new storage hardware?
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In what way does block storage differ from file storage architecture?
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What percentage of discount can Reserved Instances provide on Amazon EC2 instances?
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What is the main difference between the first snapshot and additional snapshots in AWS?
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How can snapshots be used in AWS?
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What does copying snapshots to other regions allow you to do in AWS?
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What happens during the first backup of an EBS volume in AWS?
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Which feature is included in the AWS Free Tier for Amazon EBS?
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What are the major steps involved in hosting a website on an EC2 instance according to the text?
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What is required to create an EC2 instance?
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Which service provides block-level storage in AWS?
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What can Amazon EBS be used for in conjunction with EC2?
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Which AWS storage service can be used to create and manage EBS volumes and snapshots?
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What are the key components needed to set up an EC2 instance?
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Study Notes
Configuring EC2 Instances
- You can select an AMI provided by AWS, the AWS Marketplace, or one of your own AMIs.
- You can launch multiple instances from a single AMI when you require multiple instances with the same configuration.
Operating Systems
- Amazon Machine Images (AMIs) are preconfigured with an ever-growing list of operating systems.
Adding Persistent Block Storage
- Persistent storage volume(s) can be added to an EC2 instance, working as a virtual HD using Amazon EBS.
- You can attach multiple EBS volumes to an instance.
- An EBS volume persists independently from the life of its associated instance.
- The root volume of the instance is an EBS volume.
Configuring Security Group
- Configuring a security group for an Amazon EC2 instance is essential.
- A security group is a set of virtual firewall rules that control the traffic for your instance.
Amazon EC2 Pricing Models
- There are four ways to pay for Amazon EC2 instances: On-Demand Instances, Savings Plans, Spot Instances, and Reserved Instances.
Amazon Storage
- Many clients who are just starting on their cloud journey often consider storage services in the cloud as a stepping stone to going cloud-native in the long run.
- To build a powerful cloud application, you need scalable storage.
- Access to AWS storage services is easy, and rather than procuring new storage hardware to host on-premises, it is often easier and cost-effective to use the services offered by a cloud vendor such as AWS.
Storage Options
- Block storage is an architectural design that enables the storage of data onto media such as a hard disk, in fixed-sized chunks.
- File storage architecture offers a centralized location for your corporate data, and files are stored in folders and sub-folders.
Snapshots of EBS Volumes
- The first backup of a volume backups all the data.
- Every next backup copies only a block of data that has changed since the last snapshot.
- You can copy snapshots to other Regions.
Hosting a Website on an EC2 Instance
- Major steps to host a website on an EC2 instance include creating an AWS account, creating and launching an instance, connecting to the instance, installing a web server, and uploading the website.
EBS Pricing
- The AWS Free Tier (12 months free) includes 30 GB of storage, 2 million I/Os, and 1 GB of snapshot storage with Amazon EBS.
- You can use the AWS Pricing Calculator to estimate costs.
EBS Volume Types
- When configuring your EC2 instance with an EBS volume, you need to select the type of volume, the amount of storage you wish to provision, and if you want to configure encryption on your EBS volume.
- There are different types of EBS volumes to choose from, including Solid State Drives (SSDs) and Hard Disk Drives (HDDs).
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Description
Test your knowledge on Amazon EC2 instances and Amazon Machine Images (AMIs) with this quiz. Learn about launching multiple instances from a single AMI and adding persistent block storage. Explore the ever-growing list of operating systems available for AMIs.
