Route 53

Question 1

Route53 how did this name comes from

Answer 1

I66 was the first interstate. DNS is on port 53

Question 2

top level domain

Answer 2

The last word in the domain name separate by dot

Question 3

second level domain name

Answer 3

second word in the domain name

Question 4

IANA

Answer 4

top level domain name are controlled by IANA, which is a database of all top level domains

Question 5

A registrar

Answer 5

A registrar is an authority who can assign names directly under one or more top level domains.

Question 6

InterNIC a service of ICANN

Answer 6

These domains are registered with interNIC a service of ICANN, ICANN enforces uniqueness of domain name across internet.

Question 7

whois db

Answer 7

Each domain name gets registered in a central DB known as whois db

Question 8

SOA record(Start of Authority)

Answer 8

Name of server who supplied the data for the zone,
administrator for the zone
current version of the data file
TTL

Question 9

Name Server record

Answer 9

Used by top level DNS server to direct traffic to content level DNS server. Name sever gives us SOA. Inside SOA will have all the DNS records

Question 10

A -record(Address)

Answer 10

converts domain name to ip address

Question 11

DNS name can take

Answer 11

48 hours

Question 12

CName standars for Canonical name

Answer 12

Resolve one domain name to another name

Question 13

Alias records

Answer 13

map resource records in your hosted zone to ELB, Cloud front, S3 buckets

Question 14

Difference Alias and CName

Answer 14

Cname cant be used to for naked domain names(zone apex record)

Question 15

ELB

Answer 15

ELBs do not have a predefined IPV4 address. You resolve to them using a DNS name

Question 16

Common DNS types

Answer 16

SOA records
NS records
A records
CNAMES
MX erecords
PTR records

Question 17

ELBs do not have predefined IPV4 addresses

Answer 17

You resolve to them using a DNS name

Question 18

Routing policies

Answer 18

Simple Routing
Weighted Routing
Latency based routing
Failover routing
Geolocation routing
Geoproximity Routing(Traffic flow only)
Multivalue answer routing

Question 19

You are hosting a website and would like visitors from United Kingdom to see a different site than those in Australia. Which Routing Policy would help you to accomplish this

Answer 19

Geolocation

Question 20

True or False: There is a limit to the number of domain names that you can manage using Route 53

Answer 20

True and False. With Route 53, there is a default limit of 50 domain names. However, this limit can be increased by contacting AWS support.

Question 21

Multivalue

Answer 21

Multivalue answer routing lets you configure Amazon Route 53 to return multiple values, such as IP addresses for your web servers, in response to DNS queries. Route 53 responds to DNS queries with up to eight healthy records and gives different answers to different DNS resolvers. The choice of which to use is left to the requesting service effectively creating a form or randomisation.