UP Board Solutions for Class 10 Commerce Chapter 7 Communication System
UP Board Solutions for Class 10 Commerce Chapter 7 Communication System UP Board Solutions for Class 10 Commerce Chapter 7 Communication System Communication System Objective Type Questions (1 Mark) Question 1. S. T. D. stands for: (a) Subscribers Trunk Dialing (b) Subscribers Telephone Dialing (c) Subscribers Trunk Dialer (d) None of these Answer: (a) Subscribers… Read More »