The four categories of noise are: thermal noise, intermodulation, ...

[tth]

The four categories of noise are: thermal noise, intermodulation, impulse noise, and __________.
 
  Fill in the blanks with correct word

Question 2

Which of the following is a true statement regarding SMTP processing of
   messages?
 
  A. messages typically are sent through multiple SMTP systems while going
   from the sender to the recipient
 
   B. the SMTP sender remains responsible for a message until it has been
   delivered to the recipient
 
   C. SMTP does not guarantee that all messages are delivered
 
   D. SMTP attempts to send messages until the recipients become available

[ms_sulzle]

Answer to Question 1

crosstalk

Answer to Question 2

C