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Chapter 11, Problem 11RQ
Program Plan Intro

Wide Area Network (WAN):

  • WAN is a collection of several LANs (Local Area Network).
  • LAN and other types of network can be connected together using WAN.
  • Using WAN, a computer in one location can share its data with a computer that is hundred miles away.
  • Information such as images, files, audio, or video can be sent quickly because of large network coverage.
  • WAN can connect multiple computers to internet.
  • WAN is not limited to a single location.

Public Switched Telephone Network (PSTN):

  • PSTN is a collection of interconnected voice-oriented telephone networks.
  • It consists of cellular networks, microwave transmission links, undersea telephone cables, fiber optic cables, communication satellites, and telephone lines all of which are interconnected by switching centers, therefore allowing many telephones to communicate with each other.

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