In this chapter, you will learn how to
• Explain how telecommunications networks are evolving with the advent of the Internet
• Describe key data networking concepts
• Describe the functions a data network performs using the OSI model of communications
• Describe how data flows in a wired or wireless network
• Describe HL7 and its use in transmitting healthcare data
This chapter is a brief tour through the topic of data networks and their use in healthcare. The topic of data networks is broad, deep, and constantly evolving. Many books have been written about data networks, so the best that a single chapter on the topic can do is give you an appreciation of key concepts, ...