Quick Answer
The answer is simplified routing, scalability, and support for multiple services like multicast and QoS. These are the three key benefits of MPLS Layer 3 VPNs over traditional VPNs because the service provider handles all customer routing at the provider edge, eliminating the need for a customer IGP and complex route redistribution. On the Cisco SPCOR 350-501 exam, this question tests your understanding of the architectural advantages of MPLS L3VPNs, often appearing as a multiple-select item where cost reduction and security claims are common traps—remember, MPLS L3VPNs do not inherently reduce cost or security compared to traditional VPNs. A useful memory tip is to think of the acronym SSR: Simplified routing, Scalability, and Rich services (multicast, QoS).
This 350-501 practice question tests your understanding of architecture. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which three are benefits of using MPLS Layer 3 VPNs over traditional VPNs? (Choose three.)
Scalability
MPLS L3VPNs can scale to thousands of VPNs.
Support for multiple services
MPLS L3VPN supports multicast, QoS, etc.
Lower cost
Why wrong: Cost depends on infrastructure; not inherently lower.
Reduced security
Why wrong: Security is not reduced; VPNs provide isolation.
Simplified routing
Customer sites do not need to run a routing protocol with each other.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Scalability
MPLS L3VPNs offer scalability, simplified customer routing (no customer IGP), and support for multiple services (multicast, QoS). Cost is not necessarily lower, and security is not reduced.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Scalability
Why this is correct
MPLS L3VPNs can scale to thousands of VPNs.
Related concept
Read the scenario before looking for a memorised answer.
Support for multiple services
Why this is correct
MPLS L3VPN supports multicast, QoS, etc.
Related concept
Read the scenario before looking for a memorised answer.
Lower cost
Why it's wrong here
Cost depends on infrastructure; not inherently lower.
Reduced security
Why it's wrong here
Security is not reduced; VPNs provide isolation.
Simplified routing
Why this is correct
Customer sites do not need to run a routing protocol with each other.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 350-501 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which 350-501 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Architecture — This question tests Architecture — Read the scenario before looking for a memorised answer..
The correct answer is: Scalability — MPLS L3VPNs offer scalability, simplified customer routing (no customer IGP), and support for multiple services (multicast, QoS). Cost is not necessarily lower, and security is not reduced.
Identify which 350-501 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This 350-501 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 350-501 exam.
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