Answer: Unified communication
Explanation: Unified communication is the communication technique in which merges various communication routines into a individual business.It works as the phone system which helps in increment of productivity in an organizational business.
The unifying of voice,data/information,video etc is done for optimizing and improving the business that also results in  faster communication rates, secure communication etc.
 
        
             
        
        
        
Answer: 
Explanation: 
As a user of GPL v3 software, you have lots of freedom: You can use GPL software for commercial purposes. You can modify the software and create derivative work. You can distribute the software and any derivative work you produce, without having to ask for permission or pay 
 
        
                    
             
        
        
        
Formatting<span> writes the file system structure to the disk.</span>
        
             
        
        
        
Answer:
The answer is "Option D".
Explanation:
Binary search is also an efficient mechanism for only a sorted item list. It separates the element into one half of the checklist repeatedly, till you have narrowed it down to the only single place. 
In this search, the number of comparisons is much more efficient than in the series to use the binary search approach, the items also should be shown, that's why the last choice is correct.
 
        
                    
             
        
        
        
<span>a distributed application structure that partitions tasks or workloads between the providers of a resource or service, called servers, and service requester, called clients</span>