Suppose users share a 1-gbps link. also, suppose each user requires 200 mbps when transmitting, but each user only transmits 30 percent of the time.

a. (5 pts.) when circuit switching is used, how many users can be supported?

b. (5 pts.) for the remainder of this problem, suppose packet switching is used. what is the maximum number of users that can be supported if the required blocking probability is strictly less than 0.05 and what is the blocking probability with the determined maximum number of users?

Part d: float check string has a method s.isdigit() that returns true if string s contains only digits and false otherwise, i.e. s is a string that represents an integer. write a function named float_check that takes one parameter that is a string and returns true if the string represents a float and false otherwise. for the purpose of this function we define a float to be a string of digits that has at most one decimal point. note that under this definition an integer argument will return true. remember “edge cases” such as “45.” or “.45”; both should return true. for example: float_check('1234') returns true float_check('123.45') returns true float_check('123.45.67') returns false float_check('34e46') returns false float_check('.45') returns true float_check('45.') returns true float_check('45..') returns false