Subnets are one of the key resources in Amazon VPC. They are subdivisions of IP address ranges within a VPC and provide a way to segment and isolate resources within your virtual network.
Internet gateways are another important resource in Amazon VPC. They serve as the entry and exit points for traffic between your VPC and the internet. They enable communication between your VPC resources and external networks, such as the public internet.
Correct answer : B
A. Objects; access control lists (ACLs): While access control lists (ACLs) are used in VPCs for controlling network traffic, "objects" are more relevant to Amazon S3 (Simple Storage Service), not VPC.
C. Access policies; buckets: Access policies are related to AWS Identity and Access Management (IAM) and Amazon S3. "Buckets" are also part of Amazon S3, not VPC.
D. Groups; roles: Groups and roles are IAM resources, not specific to Amazon VPC. Groups are collections of IAM users, and roles are IAM identities that allow access to AWS services.
[Components of Amazon VPC]
https://varunmanik1.medium.com/how-to-create-aws-vpc-in-10-steps-less-than-5-min-a49ac12064aa
- A Virtual Private Cloud: A logically isolated virtual network in the AWS cloud. You define a VPC’s IP address space from the ranges you select.
- Subnet: A segment of a VPC’s IP address range where you can place groups of isolated resources.
- Internet Gateway: The Amazon VPC side of a connection to the public Internet.
- NAT Gateway: A highly available, managed Network Address Translation (NAT) service for your resources in a private subnet to access the Internet.
- Route Table: A route table contains a set of rules, called routes, that are used to determine where network traffic from your subnet or gateway is directed.
- DNS Hostname: The Amazon DNS server resolves a public DNS hostname to the public IPv4 address of the instance outside the network of the instance.
- CIDR: Classless Inter-Domain Routing
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