The first part of this module deals with mobility and wireless technology. It introduces the development of the mobile IP protocol, and addresses the practical application of mobile IP in real-world networking environments. It looks at advanced mobile IP features, including NAT traversal, integration with IPSec, and network mobility. In the second part, the module deals with computer and multimedia networks, and applications associated with multimedia networking. Characteristics of real-time and multimedia traffic and concepts of QoS for multimedia data transmission are discussed. It also deals with transmission of multimedia traffic over various networks, related protocols, services, and applications.