Which statement about a Cisco APIC controller versus a more traditional SDN controller is true?

Question

Options

• AAPIC uses a policy agent to translate policies into instructions.
• BAPIC supports OpFlex as a Northbound protocol.
• CAPIC does support a Southbound REST API
• DAPIC uses an imperative model

• A
  91% (30)
• C
  3% (1)
• D
  6% (2)

Explanation

Explanation

Cisco APIC uses a declarative (policy-based) model, where administrators define what the network should do, and a policy agent (running on each switch/node) translates those high-level policies into device-specific configuration instructions - this is the key architectural difference from traditional SDN controllers that push instructions directly. Option B is incorrect because OpFlex is actually a Southbound protocol used by APIC to communicate policies down to network elements, not a Northbound protocol. Option C is wrong because APIC uses a Northbound REST API (not Southbound) to allow applications and orchestration tools to interact with it. Option D is incorrect because APIC uses a declarative model (defining desired state), not an imperative model (step-by-step instructions), which is more characteristic of traditional SDN controllers.

Memory Tip: Think of APIC as a "Policy Publisher" - it declares policies from the top (Northbound REST API) and uses OpFlex southbound to deliver them, with policy agents doing the local translation. If you remember "OpFlex = Southbound," you can immediately eliminate B and C together.

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