cable modem,DSl connection

[sarahr202]

Hi every body

Let say i have a computer at home needs to be connected to internet.

Case 1:

i opted for cable ISP.

pc---ethernet-----Cable modem------------Cable isp.

my question what data link layer protocol is used between cable modem and cable Isp?  I understand  ethernet is being used between cable modem and computer one side of the cable modem.But i don't know what datalink protocol is used between cable modem and cable ISP ?

Case: I opted for DSL connection this time

PC----ethernet-------DSL modem-----------------Telco

Same question, what data llink layer  protocol is  being used between DSL modem and telco ?

Thanks and have a prosperous ,happy new year.

[Latchum Naidu · Accepted solution]

Hi Sara,

It is the point-to-point protocol is a data-link-layer protocol commonly used between DSL modem and ISP.

And it commonly used on dial-up modem connections also.

Please rate if this helps you...

Regards,

Naidu.