Question: In a GPRS network, what type of compression is supported in Iu mode to optimize radio path capacity?
Option 1: Both IP header and SDU (PDP PDU) compression
Option 2: Only SDU (PDP PDU) compression
Option 3: No compression for all PDP contexts by default
Option 4: Only IP header compression
Explanation: In Iu mode, to efficiently utilize the radio path capacity while preserving data integrity, the network employs a specific form of compression. The focus is on minimizing transmission overhead without compromising the Service Data Unit (SDU) or exterior PDP PDU. Compressing only IP headers reduces unnecessary data transmission over the radio interface without affecting core data, ensuring optimized network resource utilization.