Question: What is the primary purpose of the 'Execute USAT Command' byte code in a Universal Subscriber Identity Module (USIM) Application Toolkit (USAT) interpreter?
Option 1: To decode Simple TLVs received from the network
Option 2: To execute a USAT proactive command using provided arguments
Option 3: To handle errors related to USAT command execution
Option 4: To encode Simple TLVs for transmission to the network
Explanation: The correct answer is Option 2 because the 'Execute USAT Command' byte code is designed to execute an USAT command using provided arguments, aligning with typical telecom application toolkit functionality. Options 1 and 4 are incorrect as they relate to encoding/decoding, not execution. Option 3 is also incorrect since error handling isn't stated as the primary purpose.