Question 2: Complete the following sentences

1. 1) The frequency range of Twisted-Pair Links is approximately 0 to .......... MHz.

2. 2) The bandwidth of coaxial cables is approximately ............... MHz.

3. 3) Optical fiber is superior to coaxial cables mainly because of their ................

   bandwidths, .................. weights, ................ signal attenuation, and

   ................ impact by external interferences.

4. 4) The average transmitted power in natural NRZ is .................

   and creates an average DC voltage = ......................

5. 5) In Manchester encoding method the frequency bandwidth is ............. ... that

   of NRZ methods.

6. 6) The shift in the frequency of the transmitted signal caused by the relative

   velocity is called ......................

7. 7) A great feature of the ................ line encoding is that it is self-clocking.

8. 8) In ............... fading the received signal power fluctuates rapidly with time and

   slightly with distances.

9. 9) Thevariationofthereceivedsignalpowerduetoobstructionsiscalled.............

   fading.

10) ............... is a coupling action between two active links. Coupling can be

electrical, or electromagnetic 11) ...................is a timing irregularity that shows up at the rises and falls of

a signal, causing errors.

12. 12) Bit attenuation can be eliminated with the use of ...............

13. 13) In shadow fading the received signal power fluctuates........... .... with

distance. 14) The variation in the received signal power because of shadow fading follows

a ............... distribution.

15) ............... noise is continuous and is dependent on the temperature of themedium.

16) A MAC address is as wide as ............. bytes and is permanently stored in.........................