Suggested Answer:AD🗳️
ג€Each subnet must reside entirely within one Availability Zone and cannot span zones.ג€ ג€Every subnet that you create is automatically associated with the main route table for the VPC.ג€ Reference: http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Subnets.html
A. Each subnet maps to a single Availability Zone: When you create a subnet, you must specify an Availability Zone (AZ) where the subnet resides. Subnets are limited to a single AZ.
D. By default, all subnets can route between each other, whether they are private or public: By default, all subnets within a VPC can route traffic to other subnets within the same VPC, regardless of whether they are private or public subnets.
A|D are the answers
Each subnets maps to a single AZ and all subnets can route between each other no matter if they are public or private.
The smallest cidr block in a vpc is /28 and the largest is /16, so (B) is wrong.
Instances in a private subnet can communicate with the internet using a NAT gateway, so (C) is wrong
And a subnet only reside within ONE AZ, so (E) is wrong
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