Electronic Switching System Solved MCQ
Electronic Switching System Solved MCQ Electronic Switching System Solved MCQ contain set of 10 MCQ questions for Switching MCQ which will help you to clear beginner level quiz. Q.1. Direct inward dialling is used as a feature in (A) PSTN. (B) PBX. (C) EPABX. (D) VPN. Ans: (C) Q.2. …