(a). Suppose you are going to transmit a packet over OSI Network Model. Explain the working of Router, Gateway and Switch. Which device will be used if you face an issue of weak signals during transmission? Also, Mention on which level of OSI model these devices will work efficiently. (b). Attenuation, Distortion and Noise are the causes of Transmission impairment. What would be the solution or how these causes can be improved.

The program below has been generalized to read a user's input value for hourlywage. run the program. notice the user's input value of 10 is used. modify that input value, and run again. generalize the program to get user input values for workhoursperweek and workweeksperyear (change those variables' initializations to 0). run the program. monthsperyear will never change, so define that variable as final. use the standard for naming final variables. ex: final int max_length