Question: In a USIM application, when requesting the Administrator root public key for MexE (Service n°41), what action does the Mobile Equipment (ME) take if the EFARPK (MexE ST service n°2) data is not fully available in the initial response?
Option 1: The ME skips assembling the certificate instance and proceeds with an incomplete dataset.
Option 2: The ME performs READ BINARY commands on additional files to assemble the complete certificate instance data.
Option 3: The ME aborts the procedure and reports an error due to insufficient data in EFARPK.
Option 4: The ME caches the partial data for future use but does not attempt to complete the certificate instance.
Explanation: According to the USIM application’s specifications for handling Administrator root public key requests via MexE, if the initial data from EFARPK is incomplete, the ME is designed to take proactive steps to gather all necessary information. This involves executing READ BINARY commands on relevant files to ensure the complete assembly of the certificate instance data, facilitating successful authentication or verification processes in telecom networks.