| a. Location updates, Equipment validation |
| b. Subscriber authentication, Ciphering initiation |
| c. SMS delivery, Assigning a TCH for call or data |
| d. All the above |
| Answer: All the above |
| a. Location updates, Equipment validation |
| b. Subscriber authentication, Ciphering initiation |
| c. SMS delivery, Assigning a TCH for call or data |
| d. All the above |
| Answer: All the above |