20+ practice questions focused on Security and Services — 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 Security and Services PracticeA service provider is configuring Control Plane Policing (CoPP) on IOS XR routers to protect the control plane. The engineer wants to rate-limit ICMP traffic destined to the router to 1 Mbps, while allowing BGP and OSPF traffic with higher limits. Which type of CoPP classification should be used for the ICMP traffic?
Explanation: In IOS XR CoPP, traffic is classified into priority classes: Critical (routing protocols like BGP/OSPF), Normal (management protocols like ICMP, SSH, SNMP), and Management (for out-of-band management). ICMP destined to the router is considered normal priority traffic, not critical or management. Therefore, the Normal priority class is appropriate for rate-limiting ICMP to 1 Mbps.
A service provider is implementing BGP security measures to prevent route hijacking. Which TWO mechanisms directly validate the origin AS of BGP prefixes? (Choose two.)
Explanation: RPKI Origin Validation uses ROAs to verify that the origin AS is authorized to advertise a prefix. BGPSec cryptographically validates the entire AS path, including the origin AS. Both directly validate the origin AS. Prefix lists and route-maps filter based on attributes but do not validate origin. Community filtering manipulates communities but does not validate origin.
A service provider wants to protect its routers from CPU overload caused by excessive traffic to the control plane. Which mechanism should be configured on IOS XR routers to classify and rate-limit management traffic?
Explanation: CoPP (Control Plane Protection) on IOS XR uses class maps and policy maps to classify and rate-limit traffic destined to the control plane, protecting the router from CPU overload.
An engineer is configuring management plane hardening on an IOS XR router. The requirement is to authenticate users against a central server and provide granular command authorization. Which protocol and feature should be used?
Explanation: TACACS+ provides separate authentication, authorization, and accounting, and is commonly used with AAA for centralized management. Role-based access is achieved via task groups in IOS XR.
A service provider is deploying uRPF on customer-facing interfaces to prevent IP spoofing. The network has asymmetric routing due to multiple upstream connections. Which uRPF mode should be used?
Explanation: Strict mode requires the source address to be reachable via the incoming interface, which fails with asymmetric routing. Loose mode only checks that the source address exists in the routing table, making it suitable for asymmetric paths.
+15 more Security and Services questions available
Practice all Security and Services questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Security and Services. 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
Security and Services 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. Security and Services is tested as part of the Cisco SPCOR / CCNP Service Provider Core 350-501 blueprint. Practicing with targeted Security and Services 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 Security and Services 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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