Book Image

AWS Certified Cloud Practitioner Exam Guide

By : Rajesh Daswani
3 (1)
Book Image

AWS Certified Cloud Practitioner Exam Guide

3 (1)
By: Rajesh Daswani

Overview of this book

Amazon Web Services is the largest cloud computing service provider in the world. Its foundational certification, AWS Certified Cloud Practitioner (CLF-C01), is the first step to fast-tracking your career in cloud computing. This certification will add value even to those in non-IT roles, including professionals from sales, legal, and finance who may be working with cloud computing or AWS projects. If you are a seasoned IT professional, this certification will make it easier for you to prepare for more technical certifications to progress up the AWS ladder and improve your career prospects. The book is divided into four parts. The first part focuses on the fundamentals of cloud computing and the AWS global infrastructure. The second part examines key AWS technology services, including compute, network, storage, and database services. The third part covers AWS security, the shared responsibility model, and several security tools. In the final part, you'll study the fundamentals of cloud economics and AWS pricing models and billing practices. Complete with exercises that highlight best practices for designing solutions, detailed use cases for each of the AWS services, quizzes, and two complete practice tests, this CLF-C01 exam study guide will help you gain the knowledge and hands-on experience necessary to ace the AWS Certified Cloud Practitioner exam.
Table of Contents (23 chapters)
1
Section 1: Cloud Concepts
5
Section 2: AWS Technologies
16
Section 3: AWS Security
18
Section 4: Billing and Pricing
20
Chapter 16: Mock Tests

Distributing web traffic with Amazon ELB

When you have more than one EC2 instance that works as part of a fleet hosting a given application, you need a mechanism in place to distribute traffic to those instances in a manner that spreads the load across the fleet. At a very basic level, this is what Amazon ELBs are designed to do. Amazon ELBs distribute traffic across multiple targets, which can be EC2 instances, containers, Internet Protocol (IP) addresses, and even Lambda functions. They can handle varying traffic for your application, evenly distributing the load across those registered targets either in a single AZ or across multiple AZs within a given Region. This also means that ELBs can assist in designing architecture that offers HA and fault tolerance, as well as working with services such as Auto Scaling to deliver automatic scalability features to your applications. Note, however, that ELBs are regional-based only, so you cannot use an ELB to distribute traffic across Regions...