Cisco 1 in class 103106          Module 4

Name :                                   Period :



_______________ is literally and physically the backbone of a network.


Networking media requires _________________to ensure that it meets strict
specifications.


What is another term for signal deterioration as it relates to networking media ?




How is frequency measured ?  ______________________________________________



Describe two ways that waves are measured ___________________________________




What is the unit of measure for the amplitude of an electrical signal ? ________________


The distance of the earth from the sun; the tides of a body of water; these things can
be represented graphically by _______________________________________________


Name four sources of noise _________________________________________________





How are digital signals represented graphically ? ________________________________


What are the two basic types of copper cable ? __________________________________



How is digital data represented when using fiber optic cable ?   _____________________




Optical signals are unaffected by _____________________________________________


_____________________________cause attenuation because a portion of the transmitted

signal is ____________________________ and does not reach the receiver.


Describe the term “jitter” ___________________________________________________





Define and describe crosstalk _______________________________________________





A NIC transmits on ____________________ and receives on ______________________


What is propagation delay ? _________________________________________________




Undesirable signals in a communications system are called noise.  Name three sources of

Noise. __________________________________________________________________


What is analog bandwidth ? _________________________________________________