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AWS > Cloud Practioner > Flashcards

Cloud Practioner Flashcards

(63 cards)

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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
S3 security
IAM policy, S3 bucket policy, S3 encryption
26
S3 websites
Host a static website on Amazon S3
27
S3 versioning
Multiple versions for files, prevents accidental deletes
28
S3 access logs
Log requests made within S3 buckets
29
S3 storage classes
``` Standard Infrequent access One zone infrequent access Intelligent Glacier Deep archive ```
30
S3 replication
Same region or across region, must enable versioning
31
S3 lifecycle rules
Transition objects between classes
32
Snowball/snowmobile
Import data onto S3 through a physical device
33
Storage gateway
Hybrid solution to extend on-premises data or systems to S3
34
RDS and Aurora (SQL)
Relational DB
35
Elasticache
In-memory DB
36
DynamoDB
Key/Value DB | Serverless
37
Redshift (SQL)
Warehouse DB
38
EMR
Hadoop cluster (data)
39
Athena
Query data on Amazon S3 (serverless & SQL)
40
Glue
Managed ETL (extract transfer load) and data catalog
41
Docker
Container technology to run apps
42
ECS
Runs docker containers on EC2 instances
43
Fargate
Runs socket containers without provisioning the infrastructure Serverless offering (no EC2)
44
ECR
Private docker image respiratory
45
Batch
Run batch jobs at AWS across managed EC2 instances
46
Lightsail
Predictable & low pricing for simple apps and DB stacks
47
Lambda
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
CloudFormation (AWS ONLY)
AWS ONLY infrastructure as code, works for almost all AWS services- repeat across regions & accounts
49
Beanstalk (AWS ONLY)
Platform as a service (PaaS) Limited to detain programming languages or docker Deploy code consistently with a known architecture
50
CodeDeploy (Hybrid)
Deploy & update any app onto servers
51
Systems manager (Hybrid)
Patch, configure, and deploy commands at scale
52
OpsWork (Hybrid)
Managed chef and puppet in AWS
53
Route53
Global DNS (domain name system) Great to route users to the closest deployment with least latency Great for disaster recovery
54
CloudFront
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
S3 transfer acceleration
Accelerate global uploads & downloads into S3
56
AWS global accelerator
Improve global application availability and performance using AWE global network
57
SQS
Queue service in AWS. Multiple producers and messages are kept for 14 days Used to decouple apps
58
SNS
Notification service. | Subscribers: email, lambda, HTTP, mobile subscribers, sends message to all
59
CloudWatch
- 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
CloudTrail
Audit API calls made within your AWS account
61
X-Ray
Trace requests made through distributed applications
62
Service health dashboard
Status of all AWS services across all regions
63
Personal health dashboard
AWS events that impact your infrastructure

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