In a Regressive Round Robin Scheduler, each process is assigned a time quantum and a priority. Initially the value of the time quantum is 50 milliseconds. Every time a process has been allocated the CPU and uses its entire time quantum, i. e., does not block for I/O, 10 milliseconds is added to the time quantum and its priority level is boosted. The time quantum can be increased to a maximum of 100 milliseconds. When a process blocks before using its entire time quantum, its time quantum is reduced by 5 milliseconds and the priority is left unchanged. What type of process, i. e., CPU bound or I/0 bound, does this regressive round robin scheduler favor? Explain your answer.

Explain how email technologies enable the exchange of messages between users. find out the typical parts of an email address and explain each part.

Write a program that displays the following menu: geometry calculator 1. calculate the area of a circle 2. calculate the area of a rectangle 3. calculate the area of a triangle 4. quit enter your choice (1-4): if the user enters 1, the program should ask for the radius of the circle and then display its area. use the following formula: area = ď€(the square of r) use 3.14159 for ď€ and the radius of the circle for r. if the user enters 2, the program should ask for the length and width of the rectangle and then display the rectangle’s area. use the following formula: area = length * width if the user enters 3, the program should ask for the length of the triangle’s base and its height, and then display its area. use the following formula: area = base * height * .5 if the user enters 4, the program should end. input validation: display an error message if the user enters a number outside the range of 1 through 4 when selecting an item from the menu. do not accept negative values for the circle’s radius, the rectangle’s length or width, or the triangle’s base or height. note: if the user enters an improper menu choice (1-4), the program prints "the valid choices are 1 through 4. run the program again and select one of those." if the user enters a negative radius, the program prints "the radius can not be less than zero." if the user enters a negative value for height or base, the program prints "only enter positive values for base and height."

The main benefit of encryption of a hard drive