1. How many satellite are used in GPS, and how accurate is a GPS system? 2. In addition to position, what does GPS provide? 3. If a television set provides a wired extension for a remote infrared...

1. How many satellite are used in GPS, and how accurate is a GPS system?

2. In addition to position, what does GPS provide?

3. If a television set provides a wired extension for a remote infrared sensor, what technology is likely used?

4. When an optical fiber is used to extend a connection to a LAN, what additional devices are needed?