Answer:
B. 
Explanation:
A. is not the correct answer because that is called a LAN cable (ethernet)
C. is not correct because it has nothing to do with text messages or printing
D. is called a Bus, and isn't the right answer either 
 
        
                    
             
        
        
        
Answer:
here ya go
Explanation:
A computer is a powerful tool because it is able to perform the information processing cycle operations (input, process, output, and storage) with amazing speed, reliability, and accuracy; store huge amounts of data and information; and communicate with other computers.
 
        
             
        
        
        
Answer:
Windows key,capslock key for verify connectivity
Explanation:
Sandy's can verify whether her keyboard is working or not by pressing the windows key. Caps Lock and Num lock key will turn on the light on keyboard and she shall see whether her keyboard is functioning or not. This method is being used everywhere to verify the keyboard connectivity.The light function can also be checked by using Caps Lock or Num lock key as well. Some keyboard offers the in built light, which can be turned on by pressing Alt+Space bar. 
 
        
             
        
        
        
The combination of two or more networks is internet work!! 
Hope this helps
        
             
        
        
        
Answer:
f/11 is the answer I think