Leveraging the AWS Global Infrastructure

Question 1

Which Route 53 Routing Policies would you use to route traffic to multiple resources in proportions that you specify?

a) Simple Routing Policy
b) Weighted Routing Policy
c) Latency Routing Policy
d) Failover Routing Policy

Answer 1

b) Weighted Routing Policy

Weighted Routing Policy is used to route traffic to multiple resources in proportions that you specify.

Question 2

You need to enable fast, easy, and secure transfers of files over long distances on S3. Which service would you use?

a) AWS Global Accelerator
b) S3 Transfer Acceleration
c) S3 Cross-Region Replication

Answer 2

b) S3 Transfer Acceleration

Amazon S3 Transfer Acceleration enables fast, easy, and secure transfers of files over long distances between your client and an S3 bucket. Transfer Acceleration takes advantage of Amazon CloudFront’s globally distributed edge locations. As the data arrives at an edge location, data is routed to Amazon S3 over an optimized network path.

Question 3

What does AWS CloudFront use to improve read performance?

a) DDoS Protection
b) S3 Buckets Fast-Read
c) Caching Content in Edge Locations
d) Caching Content in Edge Regions

Answer 3

c) Caching Content in Edge Locations

CloudFront uses Edge Location to cache content, and therefore bring more of your content closer to your viewers to improve read performance.

Question 4

Which of the following statements is NOT a reason for a global application?

a) Decreased Latency
b) Disaster Recovery
c) Scale elasticity on demand
d) Attack Protection

Answer 4

c) Scale elasticity on demand

A global application is not specifically used to scale elastically on demand. You can use Auto Scaling Groups for example if you want to elastically scale based on demand.

Question 5

Which features are available with Route 53?

a) Health Checks, Auto Scaling, Routing Policy, DNS
b) Load Balancing, DNS, Domain Registration, Monitoring
c) Domain Registration, DNS, Health Checks, DDoS Protection
d) Domain Registration, DNS, Health Checks, Routing Policy

Answer 5

d) Domain Registration, DNS, Health Checks, Routing Policy

Route 53 features are (non-exhaustive list): Domain Registration, DNS, Health Checks, Routing Policy

Question 6

With which services does CloudFront integrate to protect against web attacks?

a) WAF and Shield
b) WAF and IAM
c) IAM and Shield
d) Security Groups and WAF

Answer 6

a) WAF and Shield

You can use AWS WAF web access control lists (web ACLs) to help minimize the effects of a distributed denial of service (DDoS) attack. For additional protection against DDoS attacks, AWS also provides AWS Shield Standard and AWS Shield Advanced..

Question 7

Route 53 is a Managed DNS
A DNS is a collection of rules and records that allow to understand how to reach a server through URL

In AWS what are the most common records?

Answer 7

hostname to IPv4 == “A” record
hostname to IPv6 == “AAAA” record
hostname to hostname == CNAME record
hostname to AWS Resource == Alias record

Question 8

What are the Route 53 available Routing Policies?

Answer 8

• Simple routing policy
• Weighted routing policy
• Latency routing policy
• Failover routing policy

Question 9

Which Route 53 Routing Policy would you use as a simple routing policy with no health checks?

a) Simple Routing Policy
b) Weighted Routing Policy
c) Latency Routing Policy
d) Failover Routing Policy

Answer 9

a) Simple Routing Policy

Question 10

If you have a global application deployed in different regions, Which Route 53 Routing Policy would you use for fast response to the users?

a) Simple Routing Policy
b) Weighted Routing Policy
c) Latency Routing Policy
d) Failover Routing Policy

Answer 10

c) Latency Routing Policy

Route 53 uses this policy to reduce the latency, responding to users by using the server which is closer to them.

Question 11

Which Route 53 Routing Policy would you use to support disaster recovery?

a) Simple Routing Policy
b) Weighted Routing Policy
c) Latency Routing Policy
d) Failover Routing Policy

Answer 11

d) Failover Routing Policy

Route 53 for failover knows which instance to connect based on the health of the instance.

Question 12

What are the differences between CloudFront and S3 Cross Region Replication?

Answer 12

CloudFront:

• Is a CDN (Content Delivery Network)
• Uses the Global Edge Network (about 216 Points of Presence)
• Files are cached whith a TTL (maybe a day)
• Great for static content that must be available everywhere

S3 Cross Region Replication

• Must be setup for each region you want replication to happen
• Files are updated in near real-time (no caching)
• Only for read only
• Great for dynamic content that needs to be available at low-latency in few regions.

Question 13

What are the differences between CloudFront and AWS Global Accelerator?

Answer 13

CloudFront:

• Is a CDN (Content Delivery Network)
• Improves performance for cacheable content
• Content is served at the edge

Global Accelerator:

• No caching, proxying packages at the edge to applications running in one or more AWS Regions
• Improves performance for a wide range of applications over TCP or UDP
• Good for HTTP use cases that requires static IP addresses
• Good for HTTP use cases that require deterministic, fast regional failover

Question 14

This service is great for:

• Routing users to the closest deployment with least latency
• Disaster recovery strategies

Answer 14

Global DNS: Route 53

Question 15

Mention the service that:

• Replicate part of your application to AWS Edge Locations - decrase latency
• Cache common requests - improved user experience and decreased latency

Answer 15

Global CDN: CloudFront

Question 16

Service that accelerates uploads and downloads into Amazon S3

Answer 16

S3 Transfer Acceleration

Question 17

Service that improves global application availability and performance using the AWS global network

Answer 17

AWS Global Accelerator