Question

Which of the following memory device stores information such as subscriber’s identification number in GSM?

(a) Register

(b) Flip flop

(c) SIM

(d) SMS

This question was posed to me in an interview for internship.

This is a very interesting question from Global System for Mobile (GSM) topic in portion Wireless Systems and Standards of Wireless/Mobile

Answer 1

The correct option is (c) SIM

Easiest explanation: SIM (subscriber identity module) is a memory device that stores information such as the subscriber’s identification number, the networks and countries where the subscriber is entitled to service, privacy keys, and other user specific information.