Questions 1. Subnet the given network address 192.168.90.0 for a small office consist of two departments IT and SALES to calculate the following: (60 points) a. Network Address of both IT and SALES departments (10 points) b. Starting IP address of SALES Department (10 points) C. Ending IP address of SALES Department (10 points) d. Starting IP address of IT department (10 points) e. Ending IP address of IT department (10 points) f. Broadcast address of both IT and SALES departments (10 points)