350-401 Architecture Practice Question
A network architect is designing a campus network that must support seamless mobility for wireless clients across Layer 3 boundaries. The design requires that clients retain their IP address when roaming between different subnets. Which Cisco technology should be implemented to achieve this?
⚠ Common exam trap
A common mix-up: candidates confuse data center overlay technologies like OTV or ACI with campus mobility solutions, when LISP is specifically designed for identity-location separation and mobility.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Cisco Locator/ID Separation Protocol (LISP) with mobility
LISP separates endpoint identity from location, enabling a wireless client to retain its IP address as it roams across Layer 3 boundaries. The client's endpoint identifier remains constant, while the mapping to its new routing locator is updated in the LISP mapping system. This makes LISP the appropriate technology for seamless mobility in a campus design.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cisco Application Centric Infrastructure (ACI) with endpoint groups
Why it's wrong here
Cisco ACI is a data center SDN solution that uses endpoint groups for policy, but it is not a campus wireless mobility solution. It does not provide the seamless roaming across Layer 3 boundaries that the scenario requires for wireless clients.
- ✗
Cisco Overlay Transport Virtualization (OTV) between campus buildings
Why it's wrong here
OTV is designed to extend Layer 2 domains across data centers over a Layer 3 infrastructure. It is not intended for wireless client mobility in a campus, and it does not provide the dynamic mapping required for clients to retain IP addresses across subnets.
- ✗
Cisco FabricPath with Layer 3 forwarding
Why it's wrong here
Cisco FabricPath is a data center technology for building Layer 2 multipath fabrics. It does not provide seamless mobility across Layer 3 boundaries for wireless clients, as it operates primarily at Layer 2 and is not designed for campus wireless roaming.
- ✓
Cisco Locator/ID Separation Protocol (LISP) with mobility
Why this is correct
LISP separates endpoint identity from location, allowing a client to keep its IP address while its location changes. In a campus design, LISP can be used to provide seamless mobility across Layer 3 boundaries by updating the mapping of the endpoint identifier to its new routing locator.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.