Question

PSTN stands for ________

(a) Public switched telephone network

(b) Personal switched telephone network

(c) Personal switched telephone node

(d) Public switched telephone node

The question was asked in examination.

This interesting question is from Wireless and Fixed Telephone Networks topic in portion Wireless Networking of Wireless/Mobile

Answer 1

Right answer is (a) Public switched telephone network

To elaborate: PSTN stands for public switched telephone network. The PSTN forms the global telecommunication grid which connects conventional telephone centers with MSCs throughout the world.