VPC

Question 1

VPC SF

Answer 1

Virtual Private Cloud

Question 2

What is VPC?

Answer 2

A provisioning of an isolated section of AWS Services.

Question 3

One subnet can only go to how many availability zones?

Answer 3

A SINGLE availability zone

Question 4

How many internet gateways per VPC?

Answer 4

one

Question 5

Default VPC basic settings

Answer 5

Default is user friendly for immediately deploying instances. All subnets have a route out to the internet.
Each EC2 has a public and private IP

Question 6

VPC Peering function

Answer 6

Allows to connect one VPC to another

Question 7

VPCs consist of

Answer 7

Internet Gateways, Route Tables, Network access control lists, subnets, security groups

Question 8

Can you attach multiple internet gateways to a VPC to make it faster?

Answer 8

No because only 1 per VPC

Question 9

Public vs Private subnet

Answer 9

Public can access internet, private cannot

Question 10

ACLS SF

Answer 10

Subnet Network Access Control Lists

Question 11

Default VPC default settings info

Answer 11

Have a route to the internet
Each EC2 has a public and private IP address
If deleted the only way to recover it is get AWS to reactivate it

Question 12

VPC Peering

Answer 12

Allows you to connect one VPC with another through private IP Addresses as if in the same network
Done in Star Configuration, NO TRANSITIVE PEERING

Question 13

Star configuartion

Answer 13

VPC 1 connects to 2-5, 2-5 connect to each other through VPC 1

Question 14

Transitive Peering

Answer 14

VPC peering config where they all talk to each other. CANNOT be done on AWS. All must communicate through parent.

Question 15

Creating a new VPC will generate

Answer 15

Routetable, Network ACL and Security Group

Question 16

Generally how many IP addresses are reserved per subnet?

Answer 16

251

Question 17

How do you add an internet link to a VPC

Answer 17

Link an internet gateway to the VPC with a public route

Question 18

Route destination for an internet gateway for internet is

Answer 18

0.0.0.0

Question 19

Most important things when to note when creating a NAT instance

Answer 19

Disable source/destination check
Must be in a public subnet
Must be a route out of the private subnet to the instance
Must have public IP
Bottlenecked by size of instance