Nope not necessary ...
8.8.8.8 is google's official DNS server.
yup ISP does provide DNS addresses but it not 100% necessary to use them but yes they may help when having troubles .
Yup they will provide better pings but they can be changed as per convenience till the time ISP does not block them ...
8.8.8.8 is google's official DNS server.
yup ISP does provide DNS addresses but it not 100% necessary to use them but yes they may help when having troubles .
Yup they will provide better pings but they can be changed as per convenience till the time ISP does not block them ...