Route53/DNS

Question 1

Top Level Domain

Answer 1

Last portion of the Web Address. ie .com, .net, .org

Question 2

Reigstrars

Answer 2

Authority that can assign domain names under one or more top level domains.

Question 3

NS Records

Answer 3

Name Server records are used by top level Domain Servers to direct traffic to the Content DNS Server

Question 4

Route53

Answer 4

AWS Resource that can create NS Records that you can take too Domain Registrars Like GoDaddy.

Question 5

A Record

Answer 5

Most Fundamental DNS Record. Resolves Name to IP Address.

Question 6

Elastic LB (Load Balancer)

Answer 6

Does not contain IPv4 address. Contains only the DNS Name. Used to route traffic to AWS Resources.

Question 7

TTL (Time To Live)

Answer 7

cache that is equal to the value of time to live in seconds.

Question 8

CName (Canonical Name)

Answer 8

Resolves a domain to another. m.Facebook to Mobile.Facebook

Question 9

Alias

Answer 9

Maps your domain to your AWS Resource. Typically your maps domain to ELB.

Question 10

Alias vs CNAME

Answer 10

• FREE
• Can be created for the zone apex
• Points to AWS Resource

Question 11

Route53 Routing Policies

Answer 11

• Simple: Default RoundRobin type routing.
• Weighted
• Latencey
• Fail Over
• Geolocation