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Amazon Web Services Interview Questions Preparation Course

We have prepared an excellent course on Amazon Web Services (AWS) interview preparation on Udemy.com. AWS Interview Preparation Course on Udemy.com Amazon Web Service (AWS) is one of the fastest growing field in technology world. This course is designed to

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What types of issues do you face while connecting to an EC2 instance?

Some of the possible connection issues with EC2 instance are: Connection time out Permission denied due to host key not found Unprotected private key file Permission denied due to user key not recognized by server No supported authentication method available

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What is an activity in AWS Data Pipeline?

An activity AWS Data Pipeline is an Action that is initiated as a part of the pipeline. Some of the activities are: Elastic MapReduce (EMR) Hive jobs Data copies SQL queries Command-line scripts

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What is a schedule in AWS Data Pipeline?

In AWS Data Pipeline we can define a Schedule. The Schedule contains the information about when will pipeline activities run and with what frequency. All schedules have a start date and a frequency. E.g. One schedule can be run every

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What is the main framework behind Amazon Elastic MapReduce (EMR)?

Apache Hadoop is the main framework behind Amazon EMR. It is a distributed data processing engine. Hadoop is Open source Java based software framework. It supports data-intensive distributed applications running on large clusters of commodity hardware. Hadoop is based on

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What are different states in AWS EMR cluster?

AWS EMR has following cluster states: STARTING – In this state, cluster provisions, starts, and configures EC2 instances BOOTSTRAPPING – In this state cluster is executing the Bootstrap process RUNNING – State in which cluster is currently being run WAITING

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When should we use a Classic Load Balancer vs. an Application load balancer?

A Classic Load Balancer is used for simple load balancing of traffic across multiple EC2 instances. An Application Load Balancer is more suited for Microservices based architecture or container-based architecture. Mainly in these architecture there is a need to do

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How will you scale an Amazon EC2 instance vertically?

We can use following steps to scale an Amazon EC2 instance: Step 1: Start an EC2 instance that is larger in capacity than the one we are currently using. Step 2: Pause the new instance and detach the root web

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What is the difference between AWS Data Pipeline and Amazon Simple Workflow Service?

AWS Data pipeline is mainly used for data driven workflows that are popular in Big Data systems. AWS Data pipeline can easily copy data between different data stores and it can execute data transformations. To create such data flows, little

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What is the difference between Region, Availability Zone and Endpoint in AWS?

In AWS, every region is an independent environment. Within a Region there can be multiple Availability Zones. Every Availability Zone is an isolated area. But there are low-latency links that connect one Availability Zone to another within a region. An

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