Which of the following is not the main purpose of roaming?

Question

Options

• AAvoid packet loss or even service interruption caused by long authentication time during roaming
• BEnsure that user authorization information remains unchanged
• CEnsure that the user's IP address remains unchanged
• DEnsure that the user's network speed remains unchanged

• A
  8% (4)
• B
  17% (9)
• C
  4% (2)
• D
  71% (37)

Explanation

Ensuring network speed remains unchanged is not a goal of roaming because speed depends on the radio conditions, congestion, and capabilities of the visited network, which roaming protocols have no mechanism to control or guarantee. Options A, B, and C are all genuine objectives: roaming protocols minimize authentication delays to prevent packet loss or dropped sessions during handover, they carry authorization information (such as user profiles and service permissions) from the home network so access rights are preserved, and they support IP address continuity (for example via Mobile IP or session anchoring) so ongoing connections are not broken. In short, roaming is about maintaining connectivity and identity, not performance.

Memory tip: Think of roaming as a "seamless transfer" system -- it keeps you connected (A), keeps your credentials valid (B), and keeps your address the same (C), but it cannot promise you the same lane speed on a different road (D).

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