26 Questions
Which type of placement group is recommended for applications that benefit from low network latency, high network throughput, or both?
Cluster
What is the maximum number of running instances per Availability Zone per spread placement group?
7
Which storage option provides durable, block-level storage volumes that can be attached to a running instance?
EBS
Which storage option provides temporary block-level storage for instances?
Instance Store
Which of the following is true about hibernation in Amazon EC2 instances?
Hibernation requires an EC2 instance to be an encrypted EBS-backed instance.
Which instance state allows you to modify the properties of the instance and change its size?
Stop
What happens to the data stored in instance store volumes when an instance is terminated?
The data is deleted
What is the purpose of a security group in Amazon EC2?
To specify the protocols, ports, and source IP ranges that can reach your instances
Which of the following is true about the Nitro Hypervisor in Amazon EC2 instances?
It offloads functions to dedicated hardware and software, reducing instance costs
What are the different instance types available in Amazon EC2?
t-type, m-type, c-type, r-type, x-type, z-type, d-type, h-type, i-type, f-type, g-type, and p-type
What is the difference between instance store volumes and Elastic Block Store volumes in Amazon EC2?
Instance store volumes are used for temporary data, while EBS volumes are used for persistent storage
Which of the following is a valid method for reducing costs when using Dedicated Hosts in Amazon EC2?
Pay for a physical host that is fully dedicated to running your instances
What is the purpose of Capacity Reservations in Amazon EC2?
To reserve capacity for your instances in a specific Availability Zone
What is the difference between a security group and a placement group in Amazon EC2?
A security group controls traffic for instances, while a placement group controls the placement of instances
What is the purpose of an Elastic IP address in Amazon EC2?
To provide a static IPv4 address for dynamic cloud computing
Which of the following is true about Amazon EC2 AMIs backed by Instance Store?
The root device for an instance launched from the AMI is an instance store volume created from a template stored in S3.
What happens to a public AMI after 2 years from the creation date?
It is deprecated.
Which AWS service automates the creation, management, and deployment of Amazon Machine Images (AMIs)?
Amazon EC2 Image Builder
What is the main advantage of using Spot Instances?
They are designed not to be interrupted and will run continuously for the duration you select.
Which of the following is true about Elastic IP addresses in AWS?
Elastic IP addresses are limited to five per AWS account.
What is the purpose of an elastic network interface in AWS?
It represents a virtual network card that directs traffic to an instance.
Which of the following statements about EC2 instance monitoring in AWS is true?
EC2 instances can be monitored for CPU utilization, network utilization, and disk performance.
What can you use instance metadata for in AWS?
To configure or manage the running instance.
Which of the following statements about resource names in AWS is correct?
Resource names in AWS are tied to their region and can only be used in that region.
Which statement accurately describes the relationship between AMIs and regions in AWS?
AMIs in AWS can only be used in the region where their files are located within S3.
Which of the following statements about Elastic IP addresses in AWS is true?
Elastic IP addresses in AWS are tied to a region and can only be associated with instances in the same region.
Study Notes
Placement Groups
- Cluster placement group is recommended for applications that benefit from low network latency, high network throughput, or both.
- The maximum number of running instances per Availability Zone per spread placement group is 7.
Storage Options
- Elastic Block Store (EBS) provides durable, block-level storage volumes that can be attached to a running instance.
- Instance store provides temporary block-level storage for instances.
Instance States
- Hibernation in Amazon EC2 instances allows you to pause and resume instance operations, and the instance's RAM is preserved.
- The 'stopped' instance state allows you to modify the properties of the instance and change its size.
Instance Store Volumes
- Data stored in instance store volumes is deleted when an instance is terminated.
Security Groups
- The purpose of a security group in Amazon EC2 is to act as a virtual firewall, controlling incoming and outgoing network traffic.
Nitro Hypervisor
- The Nitro Hypervisor is a bare-metal hypervisor that provides high performance and low overhead for Amazon EC2 instances.
Instance Types
- There are several instance types available in Amazon EC2, including General Purpose, Compute Optimized, Memory Optimized, Storage Optimized, and Accelerated Computing.
Storage Volumes
- The main difference between instance store volumes and Elastic Block Store (EBS) volumes is that instance store volumes are temporary, while EBS volumes are durable and persist even when an instance is terminated.
Dedicated Hosts
- One valid method for reducing costs when using Dedicated Hosts in Amazon EC2 is to reserve them for a specific time period.
Capacity Reservations
- The purpose of Capacity Reservations in Amazon EC2 is to reserve instances in advance, ensuring that they are available when needed.
Security Groups vs. Placement Groups
- Security groups control network traffic, while placement groups control the placement of instances in a cluster.
Elastic IP Addresses
- The purpose of an Elastic IP address in Amazon EC2 is to provide a static, public IP address that can be remapped to different instances.
Amazon EC2 AMIs
- Amazon EC2 AMIs backed by Instance Store cannot be shared or sold in the AWS Marketplace.
- Public AMIs are automatically deleted after 2 years from the creation date.
Amazon Machine Images (AMIs)
- AWS Service Automates the creation, management, and deployment of Amazon Machine Images (AMIs) using the Image Builder service.
Spot Instances
- The main advantage of using Spot Instances is that they can provide significant cost savings, often up to 90% compared to On-Demand Instances.
Elastic IP Addresses
- Elastic IP addresses are static, public IP addresses that can be remapped to different instances, and they are associated with an account, not an instance.
Elastic Network Interfaces
- The purpose of an elastic network interface in AWS is to provide a virtual network interface that can be attached to an instance.
EC2 Instance Monitoring
- EC2 instance monitoring in AWS allows you to monitor instance performance and health, and set up alerts and notifications.
Instance Metadata
- You can use instance metadata for tasks such as configuring an instance, installing software, or running scripts.
Resource Names
- Resource names in AWS are case-sensitive and must be unique within an AWS account.
AMIs and Regions
- AMIs are region-specific, meaning that an AMI created in one region is not available in another region by default.
Test your knowledge on Auto Scaling groups, placement groups, and cluster placement in AWS. This quiz will cover topics such as instance metadata, launching instances in placement groups, and the benefits of clustering instances in a single Availability Zone.
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