Which three are SGSN GPRS Mobility Management procedures? (Choose three.)

Question

Options

• AGPRS Attach
• BAuthentication
• CPDP Context Activation
• DRouting Area Update
• EQoS Control
• FPDP Context Deactivation

• A
  77% (30)
• C
  8% (3)
• E
  13% (5)
• F
  3% (1)

Explanation

GPRS Mobility Management (GMM) is specifically concerned with subscriber identity and location within the GPRS network. GPRS Attach (A) registers the subscriber with the SGSN, Authentication (B) verifies the subscriber's identity (triggered during attach and location updates), and Routing Area Update (D) tracks the subscriber's location as they move between routing areas - all three are core GMM functions handled by the SGSN.

Why the distractors are wrong:

• C (PDP Context Activation) and F (PDP Context Deactivation) are Session Management (SM) procedures, not Mobility Management - they govern data bearer setup/teardown, a separate functional layer.
• E (QoS Control) is a bearer/session-layer concern tied to PDP context negotiation, not a GMM procedure.

Memory tip: GMM = "Who you are and where you are" - Authentication proves who you are, Attach registers you exist, Routing Area Update tracks where you are. Anything involving a PDP context (activation, deactivation) belongs to Session Management, not Mobility Management.

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