Question: Where is the DHCP Client located for interworking with the IP network?
Option 1: In the UE
Option 2: In the PDN
Option 3: In the P-GW
Option 4: In the external DHCP server
Explanation: The DHCP client is located in the P-GW for interworking with the IP network, as it is responsible for allocating IP addresses to the UE and configuring associated parameters via external DHCP servers in PDN(s).