VPC

Question 1

What is VPC?

Answer 1

Virtual Private Cloud

There is one default VPC in each region

Question 2

What are subnets?

Answer 2

Subnets are a network partition of the VPC

Subnets are tied to an availability zone

Question 3

What is an Internet Gateway?

Answer 3

at the VPC level, it provides Internet Access

Question 4

What are NAT Gateway /Instances?

Answer 4

They give internet access to PRIVATE subnets

Question 5

What are NACLS?

Answer 5

Stateless, subnet rules for inbound and outbound traffic

Question 6

What are Security Groups?

Answer 6

Stateful (deny all inbound and allow all outbound)

operate at the EC2 instance level or ENI

Question 7

What is VPC Peering?

Answer 7

Connect two or more VPCs with non overlapping IP ranges

They are non-transitive

Question 8

What are VPC Endpoints?

Answer 8

VPC endpoint provide PRIVATE access to AWS Services within the VPC

Question 9

What are VPC Flow Logs?

Answer 9

network traffic logs

Question 10

What is Site to Site VPN?

Answer 10

VPN over public internet between on-premises Direct Connect (DC) and AWS

Question 11

What is Direct Connect?

Answer 11

direct private connection to AWS

Question 12

You would like to provide internet access to your instances in private subnets with IPv4, while making sure this solution requires the least amount of administration and scales seamlessly. What should you use?

Answer 12

NAT Gateway

Question 13

Your EC2 instance in a private subnet must access the AWS APIs privately. You must keep all traffic within the AWS network. What do you recommend?

Answer 13

VPC Endpoints