The first connection established is for traffic control and the second is created for transfer of a file.
Please mark as brainlest answers
        
             
        
        
        
Answer:
you could send a email to your teacher to fix the problem
Explanation:
 
        
             
        
        
        
Answer:
Explanation: 
Gas Filling Station has pumps. Pumps have credit card readers. Driver can able to swipe their cards, pumps have Fuel. Pumps card readers communicate with Credit Company. Driver interacts with pump for fuel and credit card.
In this situation the following we need to treat as objects.
They are Pump, Card reader, Fuel tank, communication system, system controller and price table.
Design pattern for the following system is attached below
 
        
             
        
        
        
A formula is statement written by the user to be calculated. Formulas can be as simple or as complex as the user wants. A formula can contain values, references to cells, defined names, and functions.
All formulas must start with the equals sign. =1+2+3
A function is a piece of code designed to calculate specific values and are used inside formulas. Functions to sum values, calculate a trigonometric cosine, and to calculate the current time are built into excel. Additional functions can be defined using Visual Basic.
Functions are typed alongside parenthesizes, where in the arguments if any are listed in between. To use functions in a formula, for example
=COS(3.14) will return the calculated cosine. =NOW() returns the current time. =SUM(1+2+3) *2 will multiply the sum by 2Explanation hope it helps