Networking and Telecommunications

          Describe the OSI Model Describe the TCP/IP (Internet Model) How do you determine the cost of a system? What are some of the application areas where a LAN can be an effective tool? What are some of the features offered by Windows 2003/2008? What are the advantages and disadvantages of ATM? What are the advantages of frame relay? What are the functions performed by a network operating system? What are the SDLC phases?