Deploying an Application on EC2 Instances for Low Inter-Node Latency
Question
You work as an architect for a company.
There is a requirement for an application to be deployed on a set of EC2 Instances.
These would be part of a compute cluster that requires low inter-node latency.
Which of the following would you use for this requirement?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D. E.Answer - D.
The AWS Documentation mentions the following.
Amazon Web Services' solution to reduce latency between instances involves the use of placement groups.
As the name implies, a placement group is just that -- a group.
AWS instances that exist within a common availability zone can be grouped into a placement group.
Group members can communicate with one another in a way that provides low latency and high throughput.
Cluster Placement groups are recommended for applications that benefit from low network latency, high network throughput, or both.
The majority of the network traffic is between the instances in the group.
To provide the lowest latency and the highest packet-per-second network performance for your placement group, choose an instance type that supports enhanced networking.
Because of what is mentioned in the documentation, all other options are incorrect.
For more information on AWS placement groups, please visit the URL-
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.htmlTo deploy an application on a set of EC2 instances that require low inter-node latency, the most appropriate solution would be to use Cluster Placement Groups (CPGs).
A Cluster Placement Group is a logical grouping of instances within a single Availability Zone (AZ), and provides low-latency network connectivity between instances in the group. CPGs are recommended for applications that require high network throughput and low latency, as they are optimized for low-latency inter-instance communication.
Option A (Multiple Availability Zones) would not be suitable for this requirement as it is not designed to provide low-latency inter-instance communication. Instead, Multiple Availability Zones are used for disaster recovery and high availability, allowing you to deploy resources in multiple geographically separate data centers.
Option B (AWS Direct Connect) is a network service that provides dedicated network connections between your on-premises data center and AWS, bypassing the internet. While this can improve network performance, it is not designed to specifically address low inter-node latency.
Option C (EC2 Dedicated Instances) provides instances that run on hardware dedicated to a single customer. While this can improve security and compliance requirements, it does not provide any specific networking optimizations.
Option E (VPC private subnets) are used to isolate resources within a VPC and provide additional security. They do not provide any specific networking optimizations for inter-instance communication.
Therefore, the correct answer is D, Cluster Placement Groups.
