Module 4 - Networking Flashcards
What is a networking service that you can use to establish boundaries around your AWS resources?
Amazin Virtual Private Cloud (Amazon VPC)
Within a virtual private cloud (VPC), what allows you to organize your resources into private or public _____?
Subnets - they are seperate areas that are used to group together resources.
To allow public traffic from the internet to access your VPC, you attach an ______ to the VPC. It is a connection between a VPC and the internet.
internet gateway
To access private resources in a VPC, you can use a ____
virtual private gateway
What is AWS Direct Connect?
It is a service that lets you to establish a dedicated private connection between your data center and a VPC.
_____ contain resources that need to be accessible by the public, such as an online store’s website.
Public subnets
____ contain resources that should be accessible only through your private network, such as a database that contains customers’ personal information and order histories.
Private subnets
When a customer requests data from an application hosted in the AWS Cloud, this request is sent as a _____. A ______ is a unit of data sent over the internet or a network.
(1 word)
packet
What is a virtual firewall that controls inbound and outbound traffic at the subnet level?
network access control list (ACL)
What is it called when Network ACLs remember nothing about packets that cross each way?
Stateless packet filtering
Security group?
It is a virtual firewall that controls inbound and outbound traffic for an Amazon EC2 instance.
Security groups perform ____ packet filtering. They remember previous decisions made for incoming packets.
Stateful
Which statement best describes an AWS account’s default network access control list?
A. It is stateless and denies all inbound and outbound traffic.
B. It is stateful and allows all inbound and outbound traffic.
C. It is stateless and allows all inbound and outbound traffic.
D. It is stateful and denies all inbound and outbound traffic.
C
What is Domain Name System (DNS)?
It takes a domain name such as google.com and translates it to an IP address.
Amazon Route 53?
It is a DNS web service. It gives developers and businesses a reliable way to route end users to internet applications hosted in AWS.
Amazon Route 53 connects user requests to infrastructure running in AWS (such as Amazon EC2 instances and load balancers). It can route users to infrastructure outside of AWS.
