Network Control protocols ( NCP)
The first ARPANET networking protocols was named simply the network control protocols in 1970,and was created by created by network group . NVP was designed to establish and maintain a communication link between two host computers.
In other world NCP is methods of establishing and configuring different network layer protocols. NCP is designed to allow the simultaneous use of multiple network layer protocols. Some example of protocols are IPCP ( Internet work protocols control Protocol ) and IPXCP ( Internetwork packet exchange control packet).