Question

1. Select the correct statement(s) regarding frequency modulation (FM) and bandwidth.

   A. Increasing Kvco will increase frequency bandwidth

   B. the higher the FM index ?, the wider the modulated signal bandwidth

   C. As baseband signal, m(t) amplitude increase, so does modulated signal bandwidth

   D. All are correct statements

2. Identify the way(s) baseband signals, m(t), can modulate a carrier wave.

a) By changing the carrier amplitude to reflect m(t)

b) By changing the carrier frequency to reflect m(t)

c) By changing the carrier phase angle to reflect m(t)

d) All of the above ways.

3. Is a line coding method in which a string of logical 0's are replaced by either a 000+0-0=,

A.NRZ

B. Bipolar AMI

C. Manchester

D. B8ZS

4. Select the correct statement regarding guided mediums.

A. All guided mediums suffer from crosstalk

B. Delay skew is an issue with UTP when multiple wire pairs are used in a parallel to transmit/receive data   

C. Modal dispersion is only an issue with SMF Cables

D. Conductive guided mediums suffer from multiple fading  

5. Select the correct statement regarding optical fiber communications

A. MMF cables have the ability to transmit multiple modes of light through a fiber optic core, thus enabling it to communicate

B. the core and cladding of fiber optic cables must have the same refractive indices in order for TIR to work properly  

C. Modal dispersion occurs when multiple light paths exist within the core of MMFcable, thus causing signal distortion

D. Both SMF and MMF cable can be constructed with a step or graded index cores

6. Select the correct statement(s) regarding line coding

A. line coding involves the coding of logical data (1s and 0s) into electrical signal changes

B. line coding produces a digital baseband signal   

C. line coding methods differ in efficiency, ability to maintain receiver timing, and bandwidth

D. All statements are correct     

in need of these 6 answers ASAP thanks!!!!

Answer 1