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Author Question: Analog signals can use copper wire or use transmission media such as fiber-optics or ________ ... (Read 106 times)

future617RT

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Analog signals can use copper wire or use transmission media such as fiber-optics or ________ (radio, microwave, infrared).
 
  A) wired
  B) wireless
  C) parallels
  D) unicode

Question 2

Do all emails have headers?
 
  What will be an ideal response?



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nhea

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Answer to Question 1

B

Answer to Question 2

Yes, emails have headers even though you cannot see them. Most email clients or hosting services allow you to look at the header if you are interested.





 

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