Answer:
A real-time operating system is an operating system designed to support real-time applications that, usually without buffer delays, process data as it comes in. A real-time system is a time-bound system that has fixed, well defined time constraints.
 
        
             
        
        
        
Answer:
Explanation:
The following code is written in Java. Both functions traverse the linkedlist, until it reaches the desired index and either returns that value or deletes it. If no value is found the function terminates.
public int GetNth(int index)
        {
        Node current = head;
        int count = 0;
        while (current != null)
        {
        if (count == index)
        return current.data;
        count++;
        current = current.next;
        }
        assert (false);
        return 0;
        }
public int removeNth(int index)
        {
        Node current = head;
        int count = 0;
        while (current != null)
        {
        if (count == index)
        return current.remove;
        count++;
        current = current.next;
        }
        assert (false);
        return 0;
        }
 
        
             
        
        
        
Answer:
B.) Open Office Impress
Explanation:
The options are:
A.) Open Office Writer
B.) Open Office Impress
C.) an outline
D.) photographs
Out of the above, the Impress is used for doing complex presentation, and its one of the best tool for it like PowerPoint. Its quite the same as PowerPoint, and it supports both ppt format as well as odp or the open document presentation format. You can make very complex presentations with the help of the Open office Impress. 
 
        
                    
             
        
        
        
FB, I would guess. 
Sincerely, 
Xeno
        
             
        
        
        
It helps reveal the flow of execution of your program, including results of in-between evaluations. In other words, you can see what your program is doing, and why it takes the decisions it is taking.
If something unexpected happens, the trace will show you the sequence of events that lead to it.