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AWS > Cloud Practioner > Flashcards

Cloud Practioner Flashcards

1
Q

Users

A

Mapped to physical user, has a password for AWS console

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2
Q

Groups

A

Contains users only

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3
Q

Policies

A

JSON document that outlines permissions for users and groups

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4
Q

Roles

A

For EC2 instances or AWS services

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5
Q

Security

A

MFA + password policy

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6
Q

Access key

A

Access CLI or SDK

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7
Q

Audit

A

IAM credentials reports and IAM Access Advisor

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8
Q

EC2 instance (Elastic Cloud Compute)

A

AMI (OS) + instance size (CPU + RAM) + storage + security groups + EC2 user data

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9
Q

Security groups

A

Firewall attached to the EC2 instances

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10
Q

EC2 user data

A

Script launched at the first start of an instance

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11
Q

SSH

A

Start a terminal into our EC2 instance (port 22)

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12
Q

EC2 instance role

A

Linked to IAM roles

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13
Q

Purchasing options

A
  • On-demand
  • Spot
  • Reserved (standard, convertible, and scheduled)
  • Dedicated host
  • Dedicated instance
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14
Q

EBS Volumes

A
  • Network drives attached to one EC2 instance at a time
  • Mapped to availability zones
  • Can use EBS snapshots for backup/transferring EBS volumes across AZs
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15
Q

AMI (Amazon Machine Image)

A

Create ready to use EC2 instances with our customizations

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16
Q

EC2 instance store

A

High performance hardware disk attached to our EC2 instance

Lost if our instance is stopped or terminated

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17
Q

EFS (Elastic File System)

A

Network filing system, can be attached to 100s of instances in a region

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18
Q

High availability

A

Running your app or system in at least 2 availability zones

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19
Q

Scalability

A

An application or system can handle greater loads by adapting

  1. Vertical scaling: increasing the size of an instance
  2. Horizontal scaling: increasing the number of instances or systems for your app
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20
Q

Elasticity

A

There is some auto scaling so the system can scale based on the load

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21
Q

Agility

A

New IT resources is only one click away

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22
Q

ELB (Elastic Load Balancer)

A

Distributes traffic across backend EC2 instances and Supports health checks

3 types:

  • application LB: HTTP L7
  • network LB: TCP L4
  • classic: outdated
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23
Q

ASG (Auto Scaling Groups)

A

Implemented elasticity for your apps across multiple AZs.

Scale EC2 instances based on the demand and replaces unhealthy instances

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24
Q

Buckets VS objects

A

Globally unique name, tied to a region

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25
Q

S3 security

A

IAM policy, S3 bucket policy, S3 encryption

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26
Q

S3 websites

A

Host a static website on Amazon S3

27
Q

S3 versioning

A

Multiple versions for files, prevents accidental deletes

28
Q

S3 access logs

A

Log requests made within S3 buckets

29
Q

S3 storage classes

A 
Standard
Infrequent access 
One zone infrequent access
Intelligent 
Glacier 
Deep archive
30
Q

S3 replication

A

Same region or across region, must enable versioning

31
Q

S3 lifecycle rules

A

Transition objects between classes

32
Q

Snowball/snowmobile

A

Import data onto S3 through a physical device

33
Q

Storage gateway

A

Hybrid solution to extend on-premises data or systems to S3

34
Q

RDS and Aurora (SQL)

A

Relational DB

35
Q

Elasticache

A

In-memory DB

36
Q

DynamoDB

A

Key/Value DB

Serverless

37
Q

Redshift (SQL)

A

Warehouse DB

38
Q

EMR

A

Hadoop cluster (data)

39
Q

Athena

A

Query data on Amazon S3 (serverless & SQL)

40
Q

Glue

A

Managed ETL (extract transfer load) and data catalog

41
Q

Docker

A

Container technology to run apps

42
Q

ECS

A

Runs docker containers on EC2 instances

43
Q

Fargate

A

Runs socket containers without provisioning the infrastructure

Serverless offering (no EC2)

44
Q

ECR

A

Private docker image respiratory

45
Q

Batch

A

Run batch jobs at AWS across managed EC2 instances

46
Q

Lightsail

A

Predictable & low pricing for simple apps and DB stacks

47
Q

Lambda

A

Serverless, function as a service, seamless scaling, and reactive

Billing: run time X the RAM provisioned

Language: many languages except docker

Use cases: create thumbnail images uploaded onto S3

48
Q

CloudFormation (AWS ONLY)

A

AWS ONLY

infrastructure as code, works for almost all AWS services- repeat across regions & accounts

49
Q

Beanstalk (AWS ONLY)

A

Platform as a service (PaaS)
Limited to detain programming languages or docker

Deploy code consistently with a known architecture

50
Q

CodeDeploy (Hybrid)

A

Deploy & update any app onto servers

51
Q

Systems manager (Hybrid)

A

Patch, configure, and deploy commands at scale

52
Q

OpsWork (Hybrid)

A

Managed chef and puppet in AWS

53
Q

Route53

A

Global DNS (domain name system)

Great to route users to the closest deployment with least latency

Great for disaster recovery

54
Q

CloudFront

A

Global content delivery network (CDN)

Replicate part of your app to AWS edge locations- decrease latency

Cache common requests to improve user experience and decrease latency

55
Q

S3 transfer acceleration

A

Accelerate global uploads & downloads into S3

56
Q

AWS global accelerator

A

Improve global application availability and performance using AWE global network

57
Q

SQS

A

Queue service in AWS. Multiple producers and messages are kept for 14 days

Used to decouple apps

58
Q

SNS

A

Notification service.

Subscribers: email, lambda, HTTP, mobile subscribers, sends message to all

59
Q

CloudWatch

A
  • Metrics: monitors performance of AWS services and billing services
  • Alarms: automate notifications, perform EC2 action, notify SNS based on metric
  • Logs: collect log files from EC2 instances, servers, lambda functions
  • Events: react to events in AWS, or trigger a rule on schedule
60
Q

CloudTrail

A

Audit API calls made within your AWS account

61
Q

X-Ray

A

Trace requests made through distributed applications

62
Q

Service health dashboard

A

Status of all AWS services across all regions

63
Q

Personal health dashboard

A

AWS events that impact your infrastructure

AWS (1 decks)

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