56.Digital signals can be sent over a telephone line designed for analog transmission.

True

False

55.IEEE 802.11 is the dominant wired LAN standard at the physical network level.

True

54.Which of the following is false about RFID?

a.Walmart has installed RFID readers at store receiving docks to record the arrival of pallets and cases of goods shipped with RFID tags.

b.RFID systems provide a powerful technology for tracking the movement of goods throughout the supply chain.

c.RFID uses low-powered radio transmitters to read data stored in a tag at distances ranging from 1 inch to 100 feet.

d.RFID systems are networks of interconnected wireless devices that are embedded in the physical environment to provide measurements of many points over large spaces.

False

51.Most home wireless routers are capable of performing the same functions that network switches do.

True

False