16. The Carrier Sense Multiple Access (CSMA) , If the station senses the medium beforetrying to use it then the chance of collision can be ___________________
a) Increased
b) Reduced
b) Highlighted
d) Decreased

17. Code Division Multiple Access (CDMA) differs from Time Division Multiple Access  (TDMA) because there is no ___________________
a) Bandwidth
b) Link
c) Carrier
d) Time Sharing

18. The Protocol that is used to Transmit data without any schedule time is _____________
a) Random access
b) Controlled Access
c) Channelization
d) None of the above

19. Frequency Division Multiple Access (FDMA) specifies a predetermined Frequencyband for the entire period of ___________
a) Connection
b) Station
c) Communication
d) Channelization

20. The term that refers to a Physical layer techniques is called ______________________
a) CDMA
b) FDMA
c) TDMA
d) TDM