DNS Name resolution and Primary/Secondary DNS servers | CompTIA Network+ N10-008

The topic I will talk about today is Domain name resolution and about Primary and Secondary DNS servers. Before I talk about name resolution and primary and secondary DNS servers, I request my viewers to check out the part 1 of Domain name system as well as some other videos of mine for which I have attached the link below. Last of all don’t forget to subscribe.

Domain Name system (DNS hierarchy and namespaces): https://youtu.be/C2FI4wlMKJk
Distance vector routing: https://youtu.be/KPE3ON4ez2A
TCP Applications: https://youtu.be/XD6yqNlrQwk

Let’s first talk about primary/secondary DNS servers. A single domain can use more than one DNS server like google.com which needs lots of name servers to support all its incoming DNS queries. Due to this reason
a large scale network will have both a primary and secondary DNS servers. However with having many DNS servers, communication between each of them needs to done so that the records are updated frequently. This is possible by a process called zone transfer which is explained in the video.

Next topic that was discussed is DNS name resolution. The entire step by step process of how a website when typed into a web browser returns back to the client its IP address. The process how a resolver resolves names to IP addresses with the help of root server, Top level domain server and the authoritative name server giving back the IP address to the client.

#dns, #nameresolution, #primarydns

source

by Scitechboy

windows server dns forwarder