Q. What’s new in the second generation of mobile communication 2G?
a) Analog voice call and data.
b) Digital voice call and SMS.
c) Video call.
d) IP based network.
Check 🔎
Correct answer: Letter b.
The key innovation of 2G (second generation) mobile networks was the introduction of digital voice and Short Message Service (SMS). This replaced the analog transmission used in 1G, enabling better quality, encryption, and text messaging.
Q. What’s new in the second generation of mobile communication 2G?
a) 
Analog voice call and data.
→ Incorrect. That was a feature of 1G, not 2G.
b) 
Digital voice call and SMS.
→ Correct. 2G introduced digital communication, improving call quality and enabling text messaging (SMS).
c) Video call.
→ Incorrect. Video calling came much later, especially with 3G and beyond.
d) IP based network.
→ Incorrect. IP-based networking was introduced in 4G, not 2G.