Telecommunications,theInternet,andWirelessTechnolog.pptVIP

This slide continues the discussion of RFID technology. Although the cost of RFID tags used to be too costly for widespread implementation, today the cost is about 10 cents for a passive tag, so RFID is becoming more cost-effective. Ask students why special hardware and software is needed to use RFID. (To filter, aggregate, and prevent RFID data from overloading business networks and system applications.) Also, applications will need to be redesigned to accept massive volumes of frequently generated RFID data and to share those data with other applications. Major enterprise software vendors, including SAP and Oracle-PeopleSoft, now offer RFID-ready versions of their supply chain management applications. * This graphic illustrates how RFID works. Ask students if RFID potentially poses any ethical problems. For example, if your jeans have a built in RFID chip, it’s easy to track your movements. Likewise if your student ID card has an RFID chip. * This slide introduces a second wireless technology having a major impact on business, wireless sensor networks. Note that the wireless sensors are linked into an interconnected network that routes the data to a computer for analysis. * This graphic illustrates the lower level nodes and higher level nodes at work in a wireless sensor network. Note that the server that data from the sensors is sent to acts as a gateway to a network based on Internet technology. * This slide continues the discussion of the three main networking technologies today, looking at the second, packet switching. Note that circuit-switched networks were expensive and wasted available communications capacity—the circuit had to be maintained whether data was being sent or not. It is also important to note that packet switching enables packets to follow many different paths. What is the advantage of this capability? If one path is blocked due to an accident or power failure, the data will automatically be shifted by routers to open paths. However