AWS Certified Solutions Architect Associate (SAA-C03) - DNS

This video tutorial introduces the Domain Name System (DNS), explaining its significance in modern networks. It covers the basic concepts of DNS, including domain names and IP addresses, and details the DNS resolution process. The tutorial also discusses the implementation of DNS servers, highlighting their hosting and resolution functions, and explores various DNS record types and their purposes.

Explain the purpose of the Domain Name System.

What does DNS stand for?

What is a fully qualified domain name (FQDN)?

Describe the process of resolving a host name to an IP address.

What are the roles of root DNS servers in the resolution process?

How does caching improve DNS resolution?

Explain the concept of aliasing in DNS.

What is the difference between a forward lookup and a reverse lookup in DNS?

What is the significance of DNS records in the DNS system?

What is the difference between an A record and a quad A record?