Wi-Fi is designed for medium range transfers up to 900 feet out doors. ANSWER: 900 feet
        
             
        
        
        
Answer:
(a). as the combination of IP address and port number to allow an application within a computer to set up a connection with another application in another computer without ambiguity.
Explanation:
The explanation is in the answer.
 
        
             
        
        
        
C
D is the old way.
A they have not done yet
B not even a thing