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aws > VPC and Networking > Flashcards

VPC and Networking Flashcards

1
Q

ElasticIP

A

It costs even if its not attached to an EC2 instance or EC2 instance is stopped

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2
Q

VPC

A

VPC is linked to a region
Withing VPC we have subnets

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3
Q

Subnet

A

Subnet is linked to an AZ
Used to partition your VPC
Define public and private subnets

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4
Q

Route Table

A

Define access to internet and between subnets

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5
Q

CIDR Range

A

Range of IP addresses allowed in the VPC

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6
Q

Internet Gateway

A

Helps to connect VPC to internet
Public subnet routes to internet gateway which connect to internet

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7
Q

NAT Gateway & NAT Instances

A

NAT Gateway (AWS managed)
NAT Instances (Self Managed)
Allows instances in private subnet to access internet but still remain private

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8
Q

Network ACL

A

Firewall that controls traffic from and to a subnet
Define Allow & Deny rules and rules include only IP addresses

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9
Q

Security Groups

A

Firewall that controls traffic from and to a ENI/EC2 instance
Define Allow rules only and rules include IP addresses or other SGs

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10
Q

VPC Flow Logs

A

Capture information about IP traffic going into your interfaces
The VPC flow log data can go to S3, CloudWatch Logs and Kinesis Data Firehose

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11
Q

VPC Peering

A

To connect two VPC privately using the network from AWS
IP addresses range should not overlap

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12
Q

VPC Endpoints

A

To access AWS services by a private subnet in a private network
VPC Endpoint Gateway - Connect to S3 or DynamoDB
VPN Endpoint Interface - Connect to all other AWS services

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13
Q

AWS PrivateLink

A

Allows services running in your VPC in AWS to other VPCs privately
Add Network Load Balances on premise
Add Elastic Network Interface on AWS VPC

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14
Q

Site to Site VPN

A

Connect on premise DC with VPC on AWS over public internet but enctypted
Add a Customer Gateway on premise
Add Virtual Private Gateway at VPC
Connect both using site to site VPN

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15
Q

Direct Connect (DX)

A

Connect on premise DC with VPC on AWS over private network using physical connection

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16
Q

Client VPN

A

Connect your computer to private subnet in VPC on AWS
Add AWS client VPN (OpenVPN) on the computer

17
Q

Transit Gateway

A

To connect different VPCs, client, On premise with one solution

18
Q

Gateways

A

Internet - Connect public subnet to internet
NAT/Instance - Connect private subnet to internet
Customer - For site to site VPN at on premise
Virtual Private - For site to site VPN at AWS VPC

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