Question: What is the Command-Code field value for a STA command, as defined in IETF RFC 6733 (DIAMETER BASE), and what is the state of the 'R' bit in the Command Flags field?
Option 1: The Command-Code field is set to 275 and the 'R' bit is cleared.
Option 2: The Command-Code field is set to 276 and the 'R' bit is set.
Option 3: The Command-Code field is set to 274 and the 'R' bit is cleared.
Option 4: The Command-Code field is set to 275 and the 'R' bit is set.
Explanation: According to the IETF RFC 6733 (DIAMETER BASE) specification, the STA command has a Command-Code field value of 275 and the 'R' bit in the Command Flags field is cleared. This is used for the Gmb interface and is sent in response to an STR command, such as during a de-registration procedure.