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AWS Certified Cloud Practitioner > Intro > Flashcards

Intro Flashcards

1
Q

What is the AWS key concept?

A

You only pay for what you use

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2
Q

What is the AWS key value

A

Pay for what you need

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3
Q

What kind of model does AWS use?

A

Client-server model

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4
Q

What is the client-server model?

A

Client: web browser/desktop application used to make a request to the server

Server: Amazon Elastic Compute Cloud (Amazon EC2)- a virtual server

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5
Q

What is cloud computing?

A

The on-demand delivery of IT resources over the internet with pay-as-you-go pricing.

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6
Q

What are the different cloud computing deployment models?

A

Cloud-based, On-premises, and Hybrid

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7
Q

What is cloud-based computing?

A

Run all parts of the application in the cloud

Migrate existing applications to the cloud

Design and build new applications in the cloud

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8
Q

What is on-premises computing?

A

Deploy resources by using virtualization and resource management tools.

Increase resource utilization by using application management and virtualization technologies.

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9
Q

What is hybrid computing

A

Connect cloud-based resources to on-premises infrastructure

Integrate cloud-based resources with legacy IT applications.

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10
Q

What are some benefits of cloud computing? (7)

A

Trade upfront expense for variable expense

Stop spending money to run and maintain data centers

Stop guessing capacity

Benefit from massive economies of scale

Increase speed and agility

Go global in minutes

Agility, elasticity, cost savings, deploy globally in minutes

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11
Q

What are different types of cloud computing? (3)

A

Infrastructure as a service (Iaas)

Platform as a service (PaaS)

Software as a service (SaaS)

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12
Q

What is Iaas?

A

Infrastructure as a Service

The basic building block for cloud IT

Highest level of flexibility and management control over your IT resources

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13
Q

What is Paas?

A

Platform as a Service

Removes the need for organizations to manage the underlying infrastructure and allow you to focus on the deployment and management of applications.

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14
Q

What is SaaS?

A

Software as a Service

The completed product that is run and managed by the service provider.

End-user applications

Ex: web-based email

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15
Q

What is Amazon EC2?

A

Amazon Elastic Compute Cloud: It provides secure, resizable compute capacity in the cloud as Amazon EC2 instances.

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16
Q

What are the benefits of Amazon EC2?

A

Highly flexible

Cost-effective (pay for what you use)

Quick

Multitenancy: sharing underlying hardware between virtual machines

17
Q

Each instance type is grouped under an instance family. What are the different families? (5)

A

General purpose, compute optimized, memory optimized, accelerated computing, storage optimized

18
Q

What is general purpose?

A

Balanced resources and diverse workloads

19
Q

What is compute optimized?

A

Compute intensive tasks

20
Q

What is memory optimized?

A

Memory intensive tasks

21
Q

What is accelerated computing?

A

Floating point number calculations

Graphics processing

Data pattern matching

Utilize hardware accelerators

22
Q

What is storage optimized?

A

High performance for locally stored data

23
Q

What are the 4 core service offerings and which AWS services are used for them?

A

Compute: EC2 Virtual Machines

Networking: VPC Private Cloud Network

Storage: EBS Virtual Hard Drives

Databases: RDS SQL Databases

24
Q

What are the 5 pricing options?

A

On-Demand, Savings Plans, Reserved Instances, Spot Instances, Dedicated Hosts

25
Q

What is on-demand pricing?

A

Only pay for duration instance runs for. Not recommended for workloads that last a year or longer.

26
Q

What is the savings plan pricing?

A

Low prices in exchange for commitment to usage (1 or 3 year term)

27
Q

What is the reserved instances pricing?

A

predictable usage (up to 75% discount) (1 or 3 year term)

28
Q

What are spot instances?

A

Timed instances with a 2 minute warning (up to 90% discount)

29
Q

What are dedicated hosts?

A

Meets compliancy requirements. No one will share tenancy of that host.

30
Q

What is scalability?

A

Beginning with only the resources you need and designing your architecture to automatically respond to changing demand by scaling out or in.

31
Q

What amazon service is used for scalability?

A

Amazon EC2 Auto Scaling

32
Q

What are some feautres. ofAmazon EC2 Auto Scaling?

A

Dynamic scaling responds to changing demand.

Predictive scaling automatically schedules the right number of Amazon EC2 instances based on predicted demand.

Scaling up: adding more power to the machines that are running

Scaling out: adding more instances

Minimum capacity: minimum EC2 instances

Desired capacity

Maximum capacity

33
Q

What is Elastic Load Balancing?

A

The AWS service that automatically distributes incoming application traffic across multiple resources, such as Amazon EC2 instances.

34
Q

What does a load balancer act like?

A

A host directing to which EC2 instance to use.

35
Q

What kind of architecture is Elastic Load Balancing?

A

Decoupled architecture

AWS Certified Cloud Practitioner (1 decks)

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