Answer:
It is important so your computer can function properly. the two things that might happen if they are not compatible are that it might crash your computer and that your computer might not function properly.
 
        
             
        
        
        
Answer:
Attached are screenshots of the working code - baring in mind this only works on mutable Collection types. (ones that can be changed) if you use Collections that don't support this you may experience an Unsupported Operation Exception - but this is expected.
Explanation:
Using Java streams as an alternative for some answers. 
 
        
             
        
        
        
Answer: B and E 
Explanation: Those are the simplest things to do first. You can do the other things but it is best to start with the basic troubleshooting steps.
 
        
             
        
        
        
This question would not be in this computer type of thing but literacy, the core concept in IT is about a boy and the clown ( don’t remember the name)
        
             
        
        
        
<span>A collaborative Web page that is designed to be edited and republished by a variety of individuals is called ad Wiki.
A wiki is a server program that allows users to collaborate in forming the content of a Web site. The term comes from the word "wikiwiki," which means "fast" in the Hawaiian language.The simplest wiki programs allow users to create and edit content.</span>