< All CompTIA Network+ Notes

MendChrist | CompTIA Network+ | Module 1.7

By: Raul Pop | Related Course: CompTIA Network+ | Published: September 6, 2017 | Modified: September 6, 2017
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What is DNS

-Domain Name Service

-RESOLVE FQDN-> IP(Fully Qualified Domain Name)

-Computers speak numbers

-Humans remember names

-Client Sends request->Servers Answers request

-A root domain is something (.com,.gov,ro)


NotepadDNS Records

A-Address Record(forward lookups)


AAAA-IPv6 Address Record

sales.microsoft.local=IPv6 Address

CNAME-Canonical Name

sales.microsoft.local(and fake sales.microsoftt.local)

MX-Mail Exchange

Mail server for the domain.

PTR-Pointer -> sales.microsoft.local(reverse lookups)

NotepadDNS Servers

DNS Server performs:

-Resolution FQDN->IP(Forward)


-Top level Domain

-right to left


-Dynamic DNS

  Auto-update records

  Monitors Changes

  May not give everyone permission

< All CompTIA Network+ Notes
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