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The  short name for Amazon Elastic Computing Cloud is EC2. You can keep this point as an interview question. The computing capacity has an elastic property. Based on your requirement you can increase or decrease computing power. I am giving in this AWS EC2 real story for your quick reference. You need to be very attentive when you enable the Auto scaling feature. It is a responsibility for Admins. Amazon AWS EC2. Making your existing hardware to the requirement always is not so easy. So the EC2 feature in AWS helps you to allocate computing power according to your needs. AWS EC2 instance acts as your physical server. It has a memory.  You can increase the instance size in terms of CPU, Memory, Storage, and GPU.  EC2 auto scaling is a property, where it automatically increase your computing power.  1. Security Features in EC2  Virtual Private Cloud Network Access Control List Access management Security Groups Hardware Security Device Virtual Private Cloud.  The responsibilit

Tableau is one of the most popular tools in data analysis. Learning the Tableau gives you so many options in data analysis career. You can download Tableau Software free version here . Get a complete understanding document on how Tableau works here . Read this post for advancing in your Tableau Career. Unique functionality in Tableau Tableau Software was founded on the idea that analysis and visualization should not be isolated activities but must be synergistically integrated into a visual analysis process. Visual analysis means specifically: 1). Data Exploration Visual analysis is designed to support analytical reasoning. The goal of the visual analysis is to answer important questions using data and facts. In order to support analysis, it is not enough to only access and report on the data. Analysis requires computational support throughout the process. Typical steps in the analysis include such operations as filtering to focus on items of interest sorting to rank