Point-to-Point Protocol, or PPP, is a data link protocol commonly used to establish a direct connection between two networking nodes. It can provide connection authentication and can also provide transmission encryption privacy and compression.

Definition:-

Pointers are variables and contains the address of (i.e. ``points to'') other variable.All variable has their unique address in memory and if we want to get address of that memory or want to directly work with memory then pointer variables are used.