Network management: Layers of network management; infrastructure for network management; the key areas of network management (accounting, security, configuration, performance, and fault tolerance); the Internet management framework and protocols (SNMP, MlBs, and so on); practical limitations and case studies; and so on. Network security: Principles of cryptography; principles of information security; authentication; access control; integrity; attacks and countermeasures; secure network protocols (551., IPscc, and so on); practical limitations and case studies; and so on. Mobile and wireless data communications: Satellite communications; cellular wireless networks; mobile IP; wireless LAN technologies (802.11, Bluetooth, and so on); the Wireless Application Protocol (WAP); the Wireless Markup Language; and so on. Multimedia networking: Multimedia networking applications; multimedia information representation; streaming stored audio and video; video and audio conferencing; voice over IP; real-time communication protocols; RSVP; differentiated services; and so on.