350-401 Question #762: Real Exam Question with Answer & Explanation

Question

Which function does a Cisco SD-Access extended node perform?

Options

• Aprovides fabric extension to nonfabric devices through remote registration and configuration
• Bperforms tunneling between fabric and nonfabric devices to route traffic over unknown networks
• Cused to extend the fabric connecting to downstream nonfabric enabled Layer 2 switches
• Din charge of establishing Layer 3 adjacencies with nonfabric unmanaged node

Explanation

A Cisco SD-Access extended node functions to extend the fabric's capabilities by integrating traditional, non-fabric-enabled Layer 2 switches and their connected devices into the SD-Access domain.

Common mistakes.

• A. While extended nodes connect non-fabric devices, their role is more about extending fabric services to traditional access layers rather than 'remote registration and configuration' as a primary function.
• B. While the fabric uses tunneling, describing the extended node's role as performing 'tunneling between fabric and nonfabric devices to route traffic over unknown networks' is too vague and doesn't capture its specific function of integrating traditional L2 switches.
• D. An extended node connects to downstream Layer 2 switches; its role is not to establish Layer 3 adjacencies with unmanaged nodes, but rather to manage policies for end devices via the fabric.

Concept tested. Cisco SD-Access extended node role

Reference. https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/sda_design_guide/cpt_sda_design_guide_chapter.html

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