AWS Route 53

What is AWS Route 53
https://aws.amazon.com/route53/

Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. It is designed to give developers and businesses an extremely reliable and cost effective way to route end users to Internet applications by translating names like www.example.com into the numeric IP addresses like 192.0.2.1 that computers use to connect to each other. Amazon Route 53 is fully compliant with IPv6 as well.

Amazon Route 53 effectively connects user requests to infrastructure running in AWS – such as Amazon EC2 instances, Elastic Load Balancing load balancers, or Amazon S3 buckets – and can also be used to route users to infrastructure outside of AWS. 

You can use Amazon Route 53 to configure DNS health checks to route traffic to healthy endpoints or to independently monitor the health of your application and its endpoints.

manage traffic globally through a variety of routing types

• Latency Based Routing
•  Geo DNS
• Geoproximity
• Weighted Round Robin

all of which can be combined with DNS Failover in order to enable a variety of low-latency, fault-tolerant architectures

easily manage how your end-users are routed to your application’s endpoints—whether in a single AWS region or distributed around the globe.

offers Domain Name Registration – you can purchase and manage domain names such as example.com and Amazon Route 53 will automatically configure DNS settings for your domains.

1.In a highly available and fault tolerant architecture, with multiple EC2 instances hosting a website, what is the purpose of Route 53?

To populate external DNS servers with domain/IP address information for the ELB, so that inbound traffic can be load balanced by the ELB between the EC2 instances.
Route 53 automatically sends your DNS record information to DNS servers and it is also where you decide where traffic requests for that domain/IP address are routed to.

2.Which of the following are Amazon Route 53 DNS record types?
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/ResourceRecordTypes.html

1. A (address record)
2. AAAA (IPv6 address record)
3. CNAME (canonical name record)
4. CAA (certification authority authorization)
5. MX (mail exchange record)
6. NAPTR (name authority pointer record)
7. NS (name server record)
8. PTR (pointer record)
9. SOA (start of authority record)
10. SPF (sender policy framework)
11. SRV (service locator)
12. TXT (text record)
13. Amazon Route 53 also offers alias records, which are an Amazon Route 53-specific extension to DNS. You can create alias records to route traffic to selected AWS resources, including Amazon Elastic Load Balancing load balancers, Amazon CloudFront distributions, AWS Elastic Beanstalk environments, API Gateways, VPC interface endpoints, and Amazon S3 buckets that are configured as websites. Alias record typically have a type of A or AAAA, but they work like a CNAME record. Using an alias record, you can map your record name (example.com) to the DNS name for an AWS resource(elb1234.elb.amazonaws.com). Resolvers see the A or AAAA record and the IP address of the AWS resource.

3.When using CloudFront, what are the locations where the content is cached called?

Edge locations

4.Which of the following does Amazon Route 53 effectively connect user requests to? Choose all that apply.
ELB
S3
EC2

5.When you type a domain name (linuxacademy.com) into a web browser, what best describes the process that occurs to deliver the website content back to your browser?
The browser sends a request to a DNS server asking for the IP address associated with the domain name.

6.What AWS services could you use Route 53 with? Choose all that apply.
EC2
S3

7.What best describes Route 53?
A service to register domains and configure DNS records
Route 53 is the AWS service for managing domain names and DNS record sets.

8.What is the name of the AWS service that provides a Content Delivery Network?
CloudFront

9.What does DNS stand for?
Domain Name System