VPC Primer

Question 1

What is VPC?

Answer 1

Virtual Private Cloud, private network to deploy your resources

Question 2

What are Subnets?

Answer 2

Allow you to partition your network inside your VPC, AZ resource

Question 3

Whats the diff between public and private subnets?

Answer 3

Public subnet is accessible from the internet.

Question 4

How to define access to internet in VPC?

Answer 4

With Route Tables

Question 5

What are Internet Gateways?

Answer 5

Helps your VPC to connect to internet.

Question 6

What are Nat Gateways/Nat Instances?

Answer 6

Helps your private subnets to access internet while remaining private.

Question 7

What are NACL?

Answer 7

Subnet level firewall. Can ALLOR or DENY rules. Rules address only IP addresses.

Question 8

What are VPC Flow Logs?

Answer 8

Capture information about IP traffic goinf into your interfaces. It can go to S3, CW, Kinesis Data Firehose

Question 9

What is VPC Peering?

Answer 9

Connects VPCs privately. NOT TRANSITIVE: A-B, A-C !=> B-C, Must not have overlapping CIDR

Question 10

What are VPC Endpoints?

Answer 10

Allow you to connect to AWS services using private network.
* VPC Endpoint Gateway: S3 & DynamoDB
* VPC Endpoint Interface: the rest

Only used within your VPC.

Question 11

What is Site to Site VPN?

Answer 11

Connect to an on-premises VPN to AWS.
Automatically encrypted.
Goes over public internet.