Question: What is the minimum speed enhancement requirement for a SIM implementing speed enhancement in PPS procedures, according to 3GPP specifications for the SIM-ME interface?
Option 1: F=256 and D=4
Option 2: F=512 and D=4
Option 3: F=1024 and D=16
Option 4: F=512 and D=8
Explanation: In the context of PPS (Protocol and Parameter Selection) procedures for the SIM-ME interface, if a SIM chooses to implement speed enhancement, it must support at least a specific minimum configuration to ensure interoperability and efficient communication. According to the specifications, this minimum requirement is set at F=512 (which relates to the clock rate divisor, indicating how the clock frequency is divided down to derive the baud rate) and D=8 (related to the data rate adjustment factor). This ensures that even with speed enhancement, the communication remains reliable and compatible across different devices. Thus, the correct answer reflects this minimum mandatory setting for optional speed enhancement in SIMs.