Networking and Content Delivery

Question 1

VPC

Answer 1

Enables you to provision a logically isolated section of the AWS Cloud where you can launch AWS resources in a virtual network that you define​.

Enables you to customize the network configuration for your ___ and enable multiple layers of security.

Belong to a single AWS region and can span multiple Availability Zones.

Question 2

VPC Peering

Answer 2

You can connect VPCs in your own AWS account between AWS accounts, or between AWS regions.

Question 3

Subnet

Answer 3

Range of IP addreses that divide a VPC.

Belong to a single availability zone.

Classified as public or private.

Question 4

Elastic Network Interface

Answer 4

A Virtual Network Interface that you can:
Attach to an instance.
Detach from the instance, and attach to another instance to redirect network traffic.​

Question 5

Route Table

Answer 5

Contains a set of rules (or routes) that you can configure to direct network traffic from your subnet.​

Each route specifies a destination and a target. ​

By default, every route table contains a local route for communication within the VPC.​

Each subnet must be associated with one.​

Question 6

Security Groups

Answer 6

Have rules that control inbound and outbound instance traffic.

Default is to deny all inbound traffic and allow all outbound traffic.

Can only specify allow rules.

Tied to an instance.

Question 7

Network ACLs

Answer 7

Has separate inbound and outbound rules, and each rule can either allow or deny traffic.

Default network ACLs allow all inbound and outbound IPv4 traffic.​

Network ACLs are stateless.​

Tied to a subnet.

Question 8

Route 53

Answer 8

DNS web service.

Can be used to check your health of your resources, features traffic flow, and enables you to register domain names.

Can be used to configure backups and fail-over scenarios for your applications.

Question 9

Content delivery network (CDN)​

Answer 9

Is a globally distributed system of caching servers​ that caches copies of commonly requested files (static content)​.

Delivers a local copy of the requested content from a nearby cache edge or Point of Presence .

Question 10

CloudFront

Answer 10

Fast, global, and secure CDN service​.
Global network of edge locations and Regional edge caches​.
Self-service model.
Pay-as-you-go pricing.

Charged for volume of data transferred out from the edge location, and the number of HTTP(s) requests.

Question 11

Edge Locations

Answer 11

Network of data centers that CloudFront uses to serve popular content quickly to customers.

Question 12

Regional Edge Cache

Answer 12

CloudFront location that caches content that is not popular enough to stay at an edge location.

It is located between the origin server and the global edge location.