Answer: 
 GOF refers to the gang of four pattern that are generally consider the basic for all the other patterns. Design pattern are basically provide the solution to the software design to resolve all problems that are associated with the development of real world applications. 
GOF Design pattern implemented the parts of the re-usable object oriented software applications. The main aim of design pattern is to pass all the structural design pattern. Design pattern is the most powerful and helpful tool for the software developer and architecture.  
 
        
             
        
        
        
This type of freedom is called dreaming
        
             
        
        
        
Answer:
I would propose Comodo Firewall to my schoolmate. It is very easy to understand and have an appealing graphical UI. It gives the most significant level of security from dangers. It checks all the traffic going to the framework and leaving the framework. It quickly cautions you when there is any sort of suspicious action. There are no mind boggling design issues. It learns the conduct of the client to convey customized protection. It gives you the usefulness of Spyware filtering and infection checking in a single tick. There are a lot more functionalities that the firewall gives to its clients.
Explanation:
Choose a firewall that is currently on the market and write a technical "sales pitch" to your classmates on why they should choose the firewall you are selling.
I would propose Comodo Firewall to my schoolmate. It is very easy to understand and have an appealing graphical UI. It gives the most significant level of security from dangers. It checks all the traffic going to the framework and leaving the framework. It quickly cautions you when there is any sort of suspicious action. There are no mind boggling design issues. It learns the conduct of the client to convey customized protection. It gives you the usefulness of Spyware filtering and infection checking in a single tick. There are a lot more functionalities that the firewall gives to its clients.