Question: What happens when a UICC (Universal Integrated Circuit Card) cannot access the EFARR (Access Rule Reference) file, and a file under the DFTELECOM directory has its security attribute tag '8B' indicating a reference to EFARR?
Option 1: The UICC will automatically create a default access rule to grant access to the file.
Option 2: Any attempt to access the file with access rules indicated in this EFARR shall not be granted.
Option 3: The UICC will bypass the access rules and allow read-only access to the file.
Option 4: The security attribute tag '8B' will be ignored, and access will be determined by other security measures.
Explanation: This is because, as stated, if the card cannot access EFARR, any attempt to access a file with access rules indicated in this EFARR shall not be granted, ensuring security protocols are maintained even in cases of inaccessible rule references. This highlights the importance of access control and security in telecom networks, particularly at the UICC level, where sensitive user and network information is stored.