Which one of the following 2G standard is used in Japan?

Solution (By Examveda Team)

First, let's define 2G (Second Generation) wireless technology. 2G refers to the second generation of cellular network technology. It's a significant improvement over its predecessor (1G), offering improved digital voice quality, increased capacity, and data transmission capabilities, though at a relatively lower speed compared to later generations (3G, 4G, 5G).

Now, let's examine the options:

Option A: IS-136 - This is a TDMA (Time Division Multiple Access) based 2G standard, primarily used in North America.
Option B: GSM (Global System for Mobile Communications) - This is a widely adopted 2G standard, used globally, but not originally in Japan.
Option C: PDC (Personal Digital Cellular) - This is the correct answer. PDC is a TDMA-based 2G standard that was specifically developed and deployed in Japan.
Option D: AMPS (Advanced Mobile Phone Service) - This is an older 1G analog cellular technology, not a 2G standard.

Therefore, the correct answer is Option C: PDC because it was the dominant 2G cellular standard used in Japan before the widespread adoption of 3G and beyond. While GSM is a global standard, PDC held its own in the Japanese market for a considerable period.