312-49 · Question #478
SIM is a removable component that contains essential information about the subscriber. It has both volatile and non-volatile memory. The file system of a SIM resides in _____________ memory.
The correct answer is B. Non-volatile. A SIM card contains both volatile RAM (used for temporary processing) and non-volatile memory (EEPROM or Flash). The SIM's file system - which stores the subscriber's IMSI, contact phonebook, SMS messages, authentication keys (Ki), and network operator data - resides in…
Question
SIM is a removable component that contains essential information about the subscriber. It has both volatile and non-volatile memory. The file system of a SIM resides in _____________ memory.
Options
- AVolatile
- BNon-volatile
How the community answered
(42 responses)- A10% (4)
- B90% (38)
Explanation
A SIM card contains both volatile RAM (used for temporary processing) and non-volatile memory (EEPROM or Flash). The SIM's file system - which stores the subscriber's IMSI, contact phonebook, SMS messages, authentication keys (Ki), and network operator data - resides in non-volatile memory. This ensures the data persists when the SIM is removed from the device or loses power. Volatile memory on a SIM is used only for transient computations during operation.
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