20+ practice questions focused on Architecture — one of the most tested topics on the Cisco SPCOR / CCNP Service Provider Core 350-501 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Architecture PracticeAn engineer needs to ensure that a core router can forward MPLS packets without checking the IP header. Which forwarding mechanism should be enabled?
Explanation: Cisco Express Forwarding (CEF) is the required switching mechanism for MPLS forwarding. When MPLS is enabled on a router, CEF uses the Label Forwarding Information Base (LFIB) to forward packets based solely on the top label, without inspecting the IP header. This allows core routers (P routers) to perform label switching without IP lookups. Penultimate Hop Popping (PHP) is an optimization that occurs at the penultimate router, but it is not the mechanism that enables label-based forwarding; it relies on CEF. Therefore, enabling CEF switching is necessary for a core router to forward MPLS packets without checking the IP header.
Which TWO of the following are benefits of using EVPN over traditional VPLS for L2VPN services?
Explanation: EVPN uses BGP for its control plane to advertise MAC addresses, whereas VPLS relies on data-plane flooding. Option C is correct: EVPN supports active-active multi-homing with load balancing, unlike VPLS which typically uses active/standby.
Which TWO of the following are disadvantages of using VPLS for L2VPN services compared to EVPN?
Explanation: VPLS disadvantages compared to EVPN include: D) MAC address learning via flooding across all PEs, which consumes bandwidth and is inefficient; E) Limited to active/standby multi-homing in most implementations, whereas EVPN supports active/active multi-homing for better load balancing and redundancy.
A service provider wants to deploy network slicing for 5G services. Which THREE of the following are typical requirements for network slicing?
Explanation: Network slicing for 5G requires end-to-end orchestration and lifecycle management (A) to coordinate across domains, dedicated core network functions per slice (C) such as UPF and SMF to provide customized services, and resource isolation (D) in compute, network, and storage to guarantee performance and security. Option B is incorrect because slices do not need separate BGP AS numbers; they can use VRFs or other mechanisms within a shared AS. Option E is incorrect because slices typically share physical infrastructure; dedicated fibers and routers per slice are not required and would be cost-prohibitive.
A service provider is designing a new MPLS L3VPN service. The customer requires that their VPN traffic be isolated from other customers and that the provider edge routers maintain separate routing tables for each VPN. Which architectural component is essential for this separation?
Explanation: VRF (Virtual Routing and Forwarding) is the essential architectural component that enables a provider edge router to maintain separate, isolated routing tables for each VPN customer. Each VRF instance contains its own routing table, CEF (Cisco Express Forwarding) table, and associated interfaces, ensuring that traffic from one customer is never forwarded using another customer's routing information. This per-VPN isolation is fundamental to MPLS L3VPN services as defined in RFC 4364.
+15 more Architecture questions available
Practice all Architecture questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Architecture. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Architecture questions on the 350-501 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Architecture is tested as part of the Cisco SPCOR / CCNP Service Provider Core 350-501 blueprint. Practicing with targeted Architecture questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free 350-501 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but Architecture is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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