AWS SA DNS

Question 1

Does a Load Balancer Has an IP address associated with it

Answer 1

No, AWS handle the DNS of LB for you.

Question 2

Different between an Alias Record and a CNAME

Answer 2

CNAME is not able to be associated with the zone apex name (nake domain name)

Question 3

List the routing policies and use cases for Route53

Answer 3

Simple : singe server
Weighted : balance traffic according to the weigh set for each resource set.
Latency : route the traffic to resource set with the lowest latency
Failover : DR scenario
Geolocation : route the traffic according to geographical classification.

Question 4

Does Route53 has a limit for the number of domain names that can be managed

Answer 4

Yes, 50 is limit that you can always contact AWS to increase to a higher one.

Question 5

Route53 support MX record？

Answer 5

Yes