How to change the DNS server settings in your system or Laptop

 In this we are going to see how to change the DNS settings in the your system.

Normally you don't need to change this settings,suppose if you have any issues in DNS name resolution you can use the google DNS servers 8.8.8.8.

Go to Control Panel\Network and Internet\Network Connections and then go to Ethernet properties

and change the DNS setting as per the below screenshot.

What is Scavenging?

Scavenging is a feature that allows the cleanup and removal of stale resource records in DNS zones.

DNS port number

DNS port number - 53

List of DNS record types

List of DNS record types

A  -Address record  
Returns a 32-bit IPv4 address, most commonly used to map hostnames to an IP address of the host,

MX - Mail exchange record Maps a domain name to a list of message transfer agents for that domain

PTR -  Pointer record-
Pointer to a canonical name. Unlike a CNAME, DNS processing stops and just the name is returned. The most common use is for implementing reverse DNS lookups, but other uses include such things as DNS-SD.

SOA - Start of [a zone of] authority record -
Specifies authoritative information about a DNS zone, including the primary name server, the email of the domain administrator, the domain serial number, and several timers relating to refreshing the zone.
SRV - Service locator
Generalized service location record, used for newer protocols instead of creating protocol-specific records such as MX.

What is DNS

DNS

DNS Stands for Domain Naming System