DNS
What is DNS? What is it used for?
How DNS works?
Explain the resolution sequence of: www.site.com
What types of DNS records are there?
What is a A record?
What is a AAAA record?
What is a PTR record?
What is a MX record?
Is DNS using TCP or UDP?
True or False? DNS can be used for load balancing
Which techniques a DNS can use for load balancing?
What is DNS Record TTL? Why do we need it?
What is a zone? What types of zones are there?
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