Question: What is a prerequisite for implementing the (U)SIM API for Java Card?
Option 1: Implementation of a custom SAT Framework
Option 2: Implementation of ETSI TS 102 241 'UICC API for Java Card'
Option 3: Development of a proprietary UICC-CAT Runtime Environment
Option 4: Integration with an existing 5G RAN infrastructure
Explanation: The correct answer is Option 2 because the (U)SIM API for Java Card is an extension to the ETSI TS 102 241 'UICC API for Java Card', implying that the base functionality provided by this standard is required for the (U)SIM API to operate as intended, making its implementation a prerequisite.