Module 4: Networking

Question 1

What does Amazon Virtual Private Cloud enable?

Answer 1

Amazon VPC enables you to provision an isolated section of the AWS Cloud. In this isolated section, you can launch resources in a virtual network that you define.

Question 2

What is a subnet?

Answer 2

A subnet is a section of a VPC that can contain

resources such as Amazon EC2 instances.

Question 3

What is the difference between Public Subnets and Private Subnets?

Answer 3

Public subnets contain resources that need to be accessible by the public, such as an online store’s website, whereas Private subnets contain resources that should be accessible only through your private network, such as a database that contains customers’ personal information and order histories.

Question 4

What is an Internet Gateway?

Answer 4

An internet gateway is a connection between a VPC and the internet.

Question 5

What does a Virtual Private Gateway enable?

Answer 5

A virtual private gateway enables you to establish a virtual private network (VPN) connection between your VPC and a private network, such as an on-premises data center or internal corporate network. A virtual private gateway allows traffic into the VPC only if it is coming from an approved network

Question 6

What is AWS Direct Connect?

Answer 6

AWS Direct Connect is a service that enables you to establish a dedicated private connection between your data center and VPC.

Question 7

What is a packet?

Answer 7

A packet is a unit of data sent over the internet or a

network

Question 8

What is a Network Access Control List and what type of Packet filtering does it perform?

Answer 8

A network access control list (ACL) is a virtual firewall that controls inbound and outbound traffic at the subnet level. They perform Stateless Packet Filtering

Question 9

What is the difference between Stateless Packet Filtering and Stateful Packet Filtering?

Answer 9

Stateless firewalls filter packets are based on the individual packets themselves, whereas Stateful firewalls filter packets consider the full context of a given network connection.

Question 10

What is a Security Group and what type of Packet filtering does it perform?

Answer 10

A security group is a virtual firewall that controls inbound and outbound traffic for an Amazon EC2 instance. They perform Stateful Packet Filtering

Question 11

What is Amazon Route 53?

Answer 11

Amazon Route 53 is a DNS web service which gives developers and businesses a reliable way to route end users to internet applications hosted in AWS