The IAD is deployed at the () layer of the eSpace IFF system.

Question

Options

• AService
• BControl
• CAccess and Terminal
• DManagement

• A
  14% (3)
• B
  5% (1)
• C
  77% (17)
• D
  5% (1)

Explanation

Option C is correct because the IAD (Integrated Access Device) is an access-side piece of hardware that connects analog terminals - such as traditional phones and fax machines - to the IP network, placing it squarely at the Access and Terminal layer, where end-user devices interface with the system.

Why the distractors are wrong:

• A (Service): The Service layer hosts value-added applications and features (e.g., voicemail, conferencing), not the physical access hardware.
• B (Control): The Control layer manages call signaling and routing logic (handled by components like soft switches or call controllers), not device connectivity.
• D (Management): The Management layer provides network administration, monitoring, and configuration oversight - it has no role in connecting terminals.

Memory tip: The word "Access" is literally in the IAD's name - an Integrated Access Device lives at the Access and Terminal layer. If you see "access device," think "Access layer."

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