Question: In the context of initial access to Evolved Packet System (EPS) via High Rate Packet Data (HRPD), what is the primary purpose of the Extensible Authentication Protocol-Authentication and Key Agreement' (EAP-AKA') process?
Option 1: To generate a single key, MSK, for security contexts in the HRPD access network.
Option 2: Solely to authenticate the User Equipment (UE) without generating any keys.
Option 3: To establish a secure tunnel for data transmission without involving key generation.
Option 4: To generate two keys, MSK and EMSK, for authentication and security context establishment.
Explanation: EAP-AKA' indeed generates keys (MSK and EMSK), but its primary purpose in this context is more accurately reflected by focusing on the generation of MSK for HRPD security contexts, as it directly ties into the establishment of secure access.