Subnets, Gateways, Routes Flashcards
How many availability Zones are in an AWS region
At least 2
How many subnets can a VPC have
One or more
What IP restrictions does a subnet have in a VPC?
The IP range must be within the VPC range and should not collide with any other subnet in the VPC
What controls inbound and outbound VPC traffic
An Internet Gateway
What is the default route table entry for a VPC?
The VPC’s CIDR block
A Public Route Table contains what routes
The default route table, routes for granting external access through the IGW
A private route table contains what routes
The default route table… at least
What does a Bastion Provide?
A public host that allows an administrator to log in. They can SSH over to whatever computer needs maintenance and do their thing.
How can a computer on the private subnet access external resources.
Use of a NAT device in the VPC for internet access.
What settings must be set for the NAT external access strategy to work?
Source/Destination Checking
What Gateway can allow a private data center access to the VPC
A Virtual Private Gateway.
