Mark works as a Network Administrator for NetTech Inc. The network uses routers from multiple vendors. Mark wants to implement a routing protocol on the company's network that provides VLSM support…

Mark works as a Network Administrator for NetTech Inc. The network uses routers from multiple vendors. Mark wants to implement a routing protocol on the company's network that provides VLSM support, scalability and minimal overhead on the network. Which of the following protocols will Mark use to fulfill the requirements?