Question: What is the maximum Data field size for TMD, UMD, and AMD PDUs in the RLC protocol, assuming the upper layer is not BAP or SRAP?
Option 1: The maximum size of an IP packet
Option 2: The maximum size of a PDCP PDU
Option 3: The total bandwidth allocated to the UE: User Equipment
Option 4: The buffer size of the RLC entity at the transmitter
Explanation: According to the RLC protocol specification, for TMD, UMD, and AMD PDUs, the maximum Data field size is defined as the maximum size of a PDCP (Packet Data Convergence Protocol) PDU, unless the upper layer is specifically BAP or SRAP, which is not the case in this question. This ensures alignment between RLC and PDCP layers for efficient data transmission over the radio link.