Linear optimization models, their algebraic and geometric representations, simplex method, sensitivity and duality. Network models, transportation problem, assignment model, duality in transportation problem, simplex technique for transportation. Shortest route in general network, shortest and longest routes for acyclic network. Dynamic programming in optimization of networks, CPM, PERT. Waiting line models. Single-server and multiple-server model with Poisson input and exponential service other queuing models.