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DNS (Start of Authority (SOA) (Name of server, Administrator, Data file…
DNS
Start of Authority (SOA)
Name of server
Administrator
Data file version
Name server update interval
IPv4
32-bit
IPv6
128-bit
Top-level
IANA
Name Server (NS)
Traffic Direction
Address (A) records
URL -> IP
Canonical Names (CNAMES)
URL -> URL
Alias Record (AWS)
Resource -> ELBs, Cloudfront, S3 website
Route53
Policies
Routing
Simple
Not intelligence
Weighted
A/B testing
Latency
Lowest latency
Failover
DR
Geolocation
location