Cis 505 Final Exam

Strayer University (Arlington Campus) CIS 505 Final Exam Student Name: _________________ June 10, 2003 1. What ar the transmission Impairments for Guided Media and Unguided (Wireless) Media?

|-Attenuation |- Free-Space Loss | | dismissal of call attention fortissimo over aloofness |Signals disperse with dista nce | |-Attenuation aberration |- atmospheric Absorption | | contrary losses at different requencies | pee vapor and oxygen contribute to signal loss | |- thwart Distortion |- Multipath | |different speeds for different frequencies |Obstacles reflect signal creating quadruplicate copies | |- ruffle |- Refraction | |distortions of signal c! aused by stoppage |- Noise | 2. Briefly define the Term Bandwidth - Width of the spectrum of frequencies that lowlife be transmitted if spectrum=300 to 3400Hz, bandwidth=3100Hz - Greater bandwidth leads to greater cost - Limited bandwidth leads to distortion 3. What are the pattern Factors for transmittance Media ? - Bandwidth: in all other factors remaining constant, the greater the band-width of a signal, the higher the entropy rate that can be achieved. - Transmission impairments. Limit the distance a signal can travel. - interference: Competing signals in...If you want to sterilise a full essay, order it on our website: OrderCustomPaper.com

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