After reading this chapter and completing the exercises, you will be able to:
• Identify a variety of uses for WANs
• Explain different WAN topologies, including their advantages and disadvantages
• Compare the characteristics of WAN technologies, including their switching type, throughput, media, security, and reliability
• Describe several WAN transmission and connection methods, including PSTN, ISDN, T-carriers, DSL, broadband cable, broadband over powerline, ATM, and SONET
On the Job
I worked for a major global airline. We had centralized servers and a massive SQL Server database. The three distributed reservations centers were located in Orlando, Houston, and Denver. The database was highly fluid, with fares ...