AWS - mód 3 - EC2/ EBS/ S3 e RDS

Question 1

What is Amazon Elastic Compute Cloud (EC2)?

Answer 1

Amazon Elastic Compute Cloud (Amazon EC2) allows you to provision Virtual Machines and Bare Metal Hosts in Amazon Web Services (AWS) data centers. Using Amazon EC2 eliminates the need to invest in purchasing hardware, so you can develop and deploy applications faster

Question 2

Pricing on EC2 - On Demand

Answer 2

• Fixed value per hour/minute/second
• Without contract

Question 3

Pricing on EC2 - Reserved

Answer 3

• Provides discount when there is capacity reservation.
• 1 or 3 year contracts

Question 4

Pricing on EC2 - Spot

Answer 4

• Allows you to auction the amount you want to pay.
• Great option for cost reduction.

Question 5

Dedicated Hosts

Answer 5

• Dedicated physical servers.
• Useful for companies that do not allow multi-tenant workloads.
• More expensive option due to exclusivity.

Question 6

Amazon EC2 Instance Types

Answer 6

Amazon EC2 offers a wide selection of instance types optimized to meet different use cases. Instance types consist of various combinations of CPU, memory, storage, and networking capacity and give you the flexibility to choose the right resource composition for your applications.
Each instance type includes a number of instance sizes, allowing you to scale your resources according to the requirements of the workload being run.

Question 7

Amazon EC2 Instance Types - General use.

Answer 7

They provide a balance of compute, memory, and network resources and can be used for a variety of workloads. These instances are ideal for applications that use these resources in equal proportions, such as Web servers and code repositories.

Question 8

Amazon EC2 Instance Types - Optimized for computing

Answer 8

Compute-optimized instances are ideal for compute-bound applications that benefit from high-performance processors. Instances belonging to this family are suitable for batch processing workloads, media transcoding, high-performance web servers, high-performance computing (HPC), scientific modeling, dedicated game servers, and ad server engines ,machine learning inference and other compute-intensive applications.

Question 9

Amazon EC2 Instance Types - Memory optimized

Answer 9

Memory-optimized instances are designed to provide fast performance for workloads that process large sets of data in memory

Question 10

Amazon EC2 Instance Types - Accelerated computing

Answer 10

Accelerated compute instances use accelerators
hardware, or coprocessors, to perform functions such as floating point number calculations, graphics processing, or data pattern matching more efficiently than is possible in software running on CPUs.

Question 11

Amazon EC2 Instance Types - Optimized for storage.

Answer 11

Storage-optimized instances are designed for workloads that require high sequential read-write access to very large data sets on local storage. They are optimized to provide tens of thousands of low-latency random I/O operations per second (IOPS) for applications.

Question 12

Amazon Elastic Block Store (EBS)

Answer 12

Amazon Elastic Block Store (Amazon EBS) is an easy-to-use, high-performance block storage service designed for use with Amazon Elastic ComputeCloud (EC2) for processing-intensive workloads and transactions at any scale.

Question 13

EBS Classifications SSD-Based Volumes

Answer 13

are optimized for transaction workloads involving frequent read/write operations with small I/O size, where the dominant performance attribute is IOPS.

Question 14

EBS Classifications HDD-Based Volumes

Answer 14

optimized for large streaming workloads where throughput (measured in MiB/s) is a better performance measure than IOPS

Question 15

Amazon Simple Storage Service (S3)

Answer 15

Amazon Simple Storage Service (Amazon S3) is an object storage service. AWSS3 allows customers of all sizes and industries to use it to store and protect any amount of data for a variety of use cases, such as websites, mobile apps, backup and restore, archives, enterprise applications, IoT devices, and big data analytics.

Question 16

S3 features

Answer 16

• Allows file upload.
• Unlimited Storage.
• Files are stored in Buckets.
• Files can be from 0 to 5TB.
• S3 has universal namespace (unique like email).
• returns http 200 when an upload is successful.

Question 17

Storage Classes - S3 Standard

Answer 17

Provides object storage with high levels of resiliency, availability, and performance for frequently accessed data. Because it provides low latency and high throughput, S3 Standard is suitable for a wide variety of use cases, such as cloud applications, dynamic websites, content distribution, mobile apps, and games and big data analytics.

Question 18

Storage Classes - S3 Standard-IA

Answer 18

indicated for data that is accessed less frequently, but requires rapid deletion when necessary. The S3Standard–IA category offers the high levels of resilience and throughput and low latency of the S3Standard category, with reduced rates per GB of storage and GB of recovery.

Question 19

Storage Classes - S3 One Zone-IA

Answer 19

Suitable for data that is accessed less frequently but requires quick access when needed. Ideal for customers who want a lower cost option for data accessed infrequently but do not need the availability and resilience of S3Standard or S3Standard-IA.

Question 20

Storage Classes - Intelligent-Tiering

Answer 20

designed to optimize costs by automatically moving data to the most economical access tier, without impacting performance or operational overhead. It works by storing objects in two access levels: one tier is optimized for frequent access and the other lower cost tier, which is optimized for infrequent access.

Question 21

Storage Classes - S3 Glacier

Answer 21

secure, durable, low-cost storage class for data archiving. You can reliably store any volume of data at a cost that is competitive or lower than the cost of on-premises solutions

Question 22

Storage Classes - S3 Glacier Deep Archive

Answer 22

AmazonS3’s cheapest storage class and supports long-term digital retention and preservation for data that may be accessed once or twice a year. This class is designed for customers who maintain data sets for 7 to 10 years or more to meet regulatory compliance requirements, especially in highly regulated industries such as financial services, healthcare, and public sectors.

Question 23

S3 Costs

Answer 23

• Requests
• Storage
• Data Transfer
• Cross Region Replication
• Transfer acceleration

Question 24

Amazon S3 Transfer Acceleration

Answer 24

optimizes file transfers over long distances between your client and your Bucket S3. To achieve this, Transfer Acceleration uses Amazon CloudFront Edge Locations, which are distributed globally.

Question 25

Amazon S3 Cross-Region Replication (CRR)

Answer 25

You can replicate objects (and their respective metadata and object tags) in other AWS Regions to reduce latency, compliance, security, disaster recovery, and other use cases. OS3CRR is configured to a source S3 bucket and replicates objects to a target bucket in another AWS Region.

Question 26

Amazon Relational Database Service (RDS).

Answer 26

Is a web service that facilitates configuration,
operating and scaling a relational database in the AWS Cloud. It provides scalable economic capacity while automating common administration tasks such as hardware provisioning, database configuration, patching, and backups.

Question 27

Databases Players on RDS

Answer 27

• Oracle
• MySQL
• Postgre SQL
• Amazon Aurora
• Microsoft SQL Server
• Maria DB

Question 28

Amazon DynamoDB (NoSQL)

Answer 28

key-value and document database that delivers single-digit millisecond performance at any scale. It is a durable, multi-region, multi-master, fully securely managed database with integrated backup and restore and in-memory caching for internet-scale applications. DynamoDB can process more than 10 trillion requests per day and handle spikes of more than 20 million requests per second.

Question 29

Amazon Redshift (OLAP)

Answer 29

fully managed petabyte-scale data storage service in the cloud. You can start with just a few hundred gigabytes of data and scale to a petabyte or more. This allows you to use your data to gain new insights for your business and customers.

Question 30

Why does migration have to be treated as a Project?

Answer 30

Contains steps that need to be completed.

Question 31

Migration project stages

Answer 31

• Planning (Sizing and Prerequisites)
• Execution (Provisioning and best practices)
• Go Live (Validation migration - Dry Run / Final migration - CutOver)
• Post Go Live (Stabilization / Continued Support)

Question 32

A company is looking for a scalable data warehouse solution. Which of the following AWS solutions would meet the company’s needs?

Answer 32

Amazon Redshift
https://aws.amazon.com/redshift/

Question 33

A company is considering using AWS for a self-hosted relational database that requires a nightly shutdown for maintenance and cost-saving purposes. Which service should the company use?

Answer 33

Amazon EC2 with Amazon Elastic Block Store (Amazon EBS)

Question 34

Which storage service can be used as a low-cost option for hosting static websites?

Answer 34

Amazon Simple Storage Service (Amazon S3)
https://aws.amazon.com/getting-started/projects/host-static-website/

Question 35

Which AWS service can host a Microsoft SQL Server database?

Answer 35

Amazon Relational Database Service (Amazon RDS)
https://aws.amazon.com/sql/

Question 36

Which of the following is a fast and reliable NoSQL database service?

Answer 36

Amazon DynamoDB
https://aws.amazon.com/dynamodb/