Power BI Cards

Question 1

What is EC2?

Answer 1

EC2 is basically elastic compute cloud. It is just like a raw server on which you can install any operating system and you can use it for anything like hosting a website. It is just like Virtual machine.

Question 2

What is SnowBall?

Answer 2

Snowball is a way of transferring your data from and to the AWS infrastructure. Snowball device is connected to the data center. It is used to back up the data.
This device is shipped back to AWS and then loaded to the AWS infrastructure. You use it when you have large amount of data.

Question 3

What is IAM?

Answer 3

IAM is an Identification and Authentication Management tool. It is used to grant access to the users for example to create/delete instances

Question 4

What is Lambda?

Answer 4

AWS Lambda is an advanced version of EC2. Difference between EC2 and Lambda is that Lambda cannot be used to host your application. Lambda
can only be used to execute background tasks. AWS Lambda gets triggered upon events that happens on S3 such as file compressions.

Question 5

What is Elastic Beanstalk?

Answer 5

Elastic Beanstalk which is an advanced version of EC2. Elastic Beanstalk can be used to host application. With Elastic Beanstalk, you select the environment you want, and AWS will install all the configuration files required and will give you the environment on which you just have to upload your code and your application.

Question 6

What isElastic load balancer?

Answer 6

Elastic load balancer is basically used to distribute your work load among a number of instances. It is a protocol to distribute the traffic equally among instances.

Question 7

What is AutoScaling?

Answer 7

AutoScaling is a service which is used to scale up and down automatically, without manual intervention. You can set up a matrix on the CPU usage to add/remove servers. AutoScaling and Elastic load balancer work togather.

Question 8

What is S3?

Answer 8

S3 is a object based file system. Root folder is called a bucket. Bucket can have many folders.
Object is stored and retrieved by file path.

Question 9

What is CloudFront?

Answer 9

CloudFront is content delivery network. It is basically a system which cages a website to make the response times faster.

Question 10

What is Elastic Block Storage?

Answer 10

Elastic Block storage is basically like a hard drive to EC2. EC2 is backed by EBS. EC2 can have multiple EBS volumes but EBS volume cannot have more than
one EC2 attached to it.

Question 11

What is Amazon Glacier?

Answer 11

Amazon Glacier is a back up system which backs up the data from S3 or EC2 instances. They use magnetic tapes which are cheap so the data storage is very economical.

Question 12

What is Storage Gateway?

Answer 12

Storage Gateway is a service which is used between your datacenter and your cloud. Storage Gateway will sit between your Applications and Database servers.
It will keep on taking snapshots of your database and will keep on storing on S3. Let’s suppose you have 3 or 4 database servers and you have Storage Gateway installed, one of the servers fails, so Storage Gateway will use the snapshots from other servers and rebuild the failed server.

Question 13

What is RDS?

Answer 13

RDS is a database management service. It is not a database. It manages Relational Databases such as MySQL, Oracle, MariaDB, PostgreSQL, Microsoft
SQL Server, or Aurora. It updates the DB engine automatically and installs security patches automatically.

Question 14

What is Aurora?

Answer 14

Amazon Aurora is a database, which has been developed by Amazon. It is about Relational database. It is based on MySQL. Amazon Aurora is 5 times
faster than MySQL.

Question 15

What is DynamoDB?

Answer 15

DynamoDB is a database management service for non-relational databases such as NoSQL databases. It gets updated automatically. It scales itself automatically. It is used to store unstructured data such as Facebook posts.

Question 16

What is ElastiCache?

Answer 16

It is used to cache the results of queries. Let’s suppose user makes the query and it is similar to the other queries, so it will cache the result set. So the next time any other user tries to query the same data, results will be lot faster.

Question 17

What is RedShift?

Answer 17

RedShift is a data warehouse service. It is petabyte scale data warehouse service. It is an analytic tool which is used to analyze data from RDS or DynamoDB.

Question 18

What is VPC?

Answer 18

VPC is a virtual private cloud, so it is a virtual network.
It is Virtual Network where in you launch your AWS Resources. All the AWS resources can interact with each other once they are inside the VPC. It provides you security, its makes communication between
the AWS services easy and it also helps you connect your private data center to the AWS infrastructure.

Question 19

What is Direct Connect?

Answer 19

Direct Connect is a replacement to an internet connection; it is a leased line to the AWS infrastructure, so if you feel that the bandwidth of internet is not enough for your data requirements or networking requirements you can take a leased line to AWS infrastructure in the form of Direct Connect Service.

Question 20

What is Route 53?

Answer 20

Route 53 is a domain name system. It converts whatever URL you enter to a domain name system to the IP address of the server on which your website is
being posted.

Question 21

What is Cloudwatch?

Answer 21

Cloudwatch is a cloud monitoring tool. It is used to monitor all your AWS resources.
It is used to set up alerts when the usage exceeds certain threshold established by the user.

Question 22

What is CloudFormation?

Answer 22

CloudFormation is used to templatize the AWS infrastructure. It is used to launch different environments such as Test Environment, Product Environment and Debit environment.

Question 23

What is CloudTrail?

Answer 23

CloudTrail is a logging service from AWS. It is used to log your API requests, and API responses. Logs are used for troubshooting issues. It will generate logs
on the file system S3.

Question 24

What is CLI?

Answer 24

CLI is a command line tool which is replacement to the GUI of AWS.

Question 25

What is OpsWorks?

Answer 25

OPSWorks is configuration management tool. It consists of two parts which are Stack and Layers. Layers are basically different AWS services that you have combined together and when you combined them together this whole system is known as a Stack.
when you deploy the application using OpsWorks and want to make changes to all the services, you can use OPSWorks to make the changes.

Question 26

What is Trused Advisor?

Answer 26

Trusted Advisor is like a personal assistant to you in the AWS Infrastrcture. It advises you on your monthly expenditure. It advises you on the best practices
and IAM policies.

Question 27

What is KMS?

Answer 27

This is a Key Management Service. Whenever user creates an instance, AWS creates 2 keys:
Private key and Public key. Private key is looked up against Public key to see if it matches.
KMS manages these 2 keys.

Question 28

What is SES?

Answer 28

This is a Simple Email Service. It is used to send emails to the large user base. It can also process response automatically.

Question 29

What is SQS?

Answer 29

This is a Simple Queue Service. It acts as a buffer. It has a list of tasks to be performed. Let’s say you have an application that needs 5 tasks to be performed. First 2 are done by the first server and the rest by the 2nd server. 2nd Server needs to know if the tasks by the 1st server are done. This is kept in SQS.

Question 30

What is SNS?

Answer 30

This is a Simple Notification Service. It is based on triggers.