Module 4: Networking

Question 1

Amazon Virtual Private Cloud (Amazon VPC)

Answer 1

Enables you to provision an isolated section of the AWS Cloud.

Question 2

Subnet

Answer 2

Section of a VPC that can contain resources such as Amazon EC2 instances.

Question 3

Internet Gateway

Answer 3

A connection between a VPC and the internet.

Question 4

Virtual Private Gateway

Answer 4

• The component that allows protected internet traffic to enter into the VPC.
• Enables you to establish a VPN connection between your VPC and a private network.

Question 5

AWS Direct Connect

Answer 5

A service that enables you to establish a dedicated private connection between your data center and a VPC.

Question 6

Public Subnets

Answer 6

Contain resources that need to be accessible by the public.

Question 7

Private Subnets

Answer 7

Contain resources that should be accessible only through your private network.

Question 8

Packet

Answer 8

A unit of data sent over the internet or a network.

Question 9

Network Access Control Lists (ACLs)

Answer 9

A virtual firewall that controls inbound and outbound traffic at the subnet level.

Question 10

Stateless Packet Filtering

Answer 10

Nothing is remembered and packets are checked at the subnet border whether inbound or outbound.

Question 11

Security Group

Answer 11

A virtual firewall that controls inbound and outbound traffic for an Amazon EC2 instance.

Question 12

Stateful Packet Filtering

Answer 12

Previous decisions made for incoming packets are remembered.

Question 13

Domain Name System (DNS) Resolution

Answer 13

• Involves a DNS server communicating with a web server.

- The process of translating a domain name to an IP address.

Question 14

Amazon Route 53

Answer 14

• A DNS web service that gives developers and business a reliable way to route end users to internet applications hosted in AWS.
• Connects user request to infrastructure running in AWS.
• Can manage the DNS records for domain name.