Answer:
Operating system is the software that is used to control different hardware of computers and handle scheduled tasks.
It also handles the interrupts from some external devices, or from some software. The interrupts are handled through Interrupt service routine. When some external event occurs the following steps has been taken by OS to perform the operation
- In first step, an external event has been occurred, and request to the cpu to perform operation.
 - This request invoke ISR (Interrupt service routine), to perform the operation.
 - The interrupts are stored in stack on the priority basis.
 - The CPU performs the operation on Interrupt as per request of ISR.
 - After Completing operation, CPU return to its initial task.  
 
 
        
             
        
        
        
The best possible fit would be a person with a creative mind and flexible mind. 
The technical stuff can be taught and learnt. But to evolve and keep up with the pace of how technology improves day to day, you'd need some with flexibility to cope up with this and creativeness to make innovations.
        
                    
             
        
        
        
The synonym for term port is seaport
        
             
        
        
        
False because it might damage it more but if it was recommended by lots of people i mean the software then its true