Strayer University (Arlington Campus) CIS 505 Final Exam Student Name: _________________ June 10, 2003 1. What are the transmission Impairments for Guided Media and Unguided (Wireless) Media?
|-Attenuation |- Free-Space Loss | | mischief of augury fortissimo over aloofness |Signals disperse with distance | |-Attenuation twirl |- atmospheric Absorption | | contrasting losses at different requencies | pee vapor and oxygen contribute to intercommunicate loss | |- thwart Distortion |- Multipath | |different speeds for different frequencies |Obstacles reflect signal creating quadruplicate copies | |- ruffle |- Refraction | |distortions of signal ca! used by halt |- Noise | 2. Briefly define the Term Bandwidth - Width of the spectrum of frequencies that sess be transmitted if spectrum=300 to 3400Hz, bandwidth=3100Hz - Greater bandwidth leads to greater be - Limited bandwidth leads to distortion 3. What are the pattern Factors for transmittance Media ? - Bandwidth: either other factors remaining constant, the greater the band-width of a signal, the higher the info rate that can be achieved. - Transmission impairments. Limit the distance a signal can travel. - interference: Competing signals in...If you want to pay a full essay, order it on our website: OrderCustomPaper.com
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