1.Explain what service is offered over an ISDN BRI circuit to the residential telephone subscriber.2.How many voice channels are available on one ISDN BRI circuit?3.Can an ISDN line carry data information along with voice information simultaneously? If yes at what bit per second rate is available for the data transmission?4.When commercial power is lost at the resident’s home the ISDN line continues to function. A. True B. False

Write a program that performs a simple n-body simulation, called "jumping leprechauns." this simulation involves n leprechauns, numberd 1 to n. it maintains a gold value g_i for each leprechaun i, which begins with each leprechaun starting out with a million dollars worth of gold, that is, g_i = 1000000 for each i = 1,. in addition, the simulation also maintains, for each leprachaun, i, a place on the horizon, which is represented as a double-precision floating point number, x_i. in each iteration of the simulation, the simulation processes the leprachauns in order. processing a leprachaun i during its iteration begins by computing a new place on the horizon for i, which is determined by the assignment: