300-420 · Question #222
300-420 Question #222: Real Exam Question with Answer & Explanation
The correct answer is C: Reduce subnets and simplify DHCP management. {"question_number": 4, "question": "Cisco SD-Access overlay network design considerations (choose two)", "correct_answer": "C, E", "explanation": "For the SD-Access overlay, two critical design considerations are: (C) Reduce subnets and simplify DHCP management - SD-Access uses V
Question
Which two overlay network design considerations must be made for a Cisco SD-Access network? (Choose two.)
Options
- ALAN automation for deployment
- BLayer 3 to the access design
- CReduce subnets and simplify DHCP management
- DDedicated IGP process for the fabric
- EAvoid overlapping IP subnets
Explanation
{"question_number": 4, "question": "Cisco SD-Access overlay network design considerations (choose two)", "correct_answer": "C, E", "explanation": "For the SD-Access overlay, two critical design considerations are: (C) Reduce subnets and simplify DHCP management - SD-Access uses Virtual Networks (VNs) and macro-segmentation, allowing organizations to consolidate subnets and manage IP addressing more efficiently with larger supernets, reducing DHCP scope complexity. (E) Avoid overlapping IP subnets - since SD-Access carries traffic from multiple VNs over a shared fabric underlay using VXLAN encapsulation, overlapping IP spaces within or across VNs would cause routing ambiguity and traffic black-holing in the overlay. The other options are incorrect for overlay design: LAN automation (A) and automated underlay (D, implied) pertain to underlay provisioning, not the overlay design. Layer 3 to the access (B) is a traditional campus design approach that SD-Access replaces rather than incorporates.", "generated_by": "claude-sonnet", "llm_judge_score": 3}
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