Fundamentals Of Telephony MCQs – Chapter 1 DAE 5 min Score: 0 Attempted: 0/5 Subscribe 1. DTMF stands for: (A) Digital Telephony Multiple Frequency (B) Dial Tone Master Frequency (C) Digital Trunk Master Frequency (D) Dual-Tone Multi FrequencyShow All Answers 2. PSTN stands for: (A) Primary Service Telephone Numbers (B) Private Switched Telephone Network (C) Primary Service Telephone Network (D) Public Switched Telephone NetworkShow All Answers 3. POTS stands for: (A) Plain Old Telephone Service (B) Primary Office Telephone Service (C) Primary Operational Test System (D) Private Office Telephone SystemShow All Answers 4. Central offices are connected by: (A) Local loops (B) Trunk lines (C) Both a and b (D) None of the aboveShow All Answers 5. DC current flows through a telephone: (A) When it is on hook (B) As long as it is attached to a local loop (C) When it is off hook (D) Only when it is ringingShow All Answers
