🔒 VPN Services - SPCOR Practice Questions

Learn MPLS L3VPN, MPLS L2VPN (VPLS, VPWS), EVPN, and how service providers deliver VPN services to enterprise customers.

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SPCOR SP VPN Services Question Bank (7 Questions)

Browse all 7 practice questions covering VPN Services for the SPCOR certification exam. Each question includes the full answer and a detailed explanation to help you understand the concepts.

  1. Question 1Services

    What advantage does EVPN provide over traditional VPLS for multipoint L2VPN services?

    AEVPN does not require MPLS
    BEVPN uses BGP for MAC learning, supports all-active multi-homing, and provides better scalability✓
    CEVPN only supports IPv6
    DEVPN eliminates the need for PE routers
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    EVPN uses MP-BGP for MAC/IP advertisement (control-plane learning instead of data-plane flooding), supports all-active multi-homing for redundancy, provides ARP suppression, and scales better than VPLS in large deployments.

  2. Question 2Services

    What is MPLS L2VPN (VPLS/VPWS)?

    ALayer 3 routing service
    BLayer 2 VPN services: VPWS provides point-to-point L2 circuits; VPLS provides multipoint L2 LAN service over MPLS✓
    CA monitoring service
    DA DNS service
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    VPWS (Virtual Private Wire Service) emulates point-to-point L2 connections. VPLS (Virtual Private LAN Service) emulates multipoint Ethernet LAN service — both over the MPLS infrastructure.

  3. Question 3Services

    In MPLS L3VPN, what determines which routes are imported into a VRF?

    ARoute Distinguisher
    BRoute Target (import RT)✓
    CBGP community
    DOSPF area ID
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    Route Targets (RTs) are extended BGP communities that control VPN route distribution. The import RT on a VRF determines which VPNv4/v6 routes from other PEs are installed into that VRF. Export RTs tag routes leaving the VRF.

  4. Question 4Services

    What is the difference between MPLS L3VPN and L2VPN?

    AL3VPN provides Layer 3 routing between sites; L2VPN extends Layer 2 connectivity✓
    BL2VPN is faster
    CL3VPN uses less bandwidth
    DThey are the same technology
    Show Answer & Explanation
    Correct Answer: A
    Explanation:

    L3VPN provides routed connectivity between customer sites using VRFs and MP-BGP VPNv4, while L2VPN (VPLS, VPWS) extends Layer 2 Ethernet connectivity transparently across the provider network.

  5. Question 5Services

    What is EVPN-VPWS used for in modern service provider networks?

    ADNS hosting
    BPoint-to-point L2VPN service using BGP EVPN control plane instead of LDP signaling✓
    CFirewall services
    DContent delivery
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    EVPN-VPWS replaces traditional LDP-signaled pseudowires with BGP EVPN signaling for point-to-point L2VPN, providing operational simplification and consistent multi-service architecture.

  6. Question 6VPN Services

    What is the difference between L2VPN and L3VPN?

    ANo difference
    BL2VPN extends Layer 2 domains across the provider network (VPLS, EVPN); L3VPN provides Layer 3 routing between customer sites (MPLS VPN with VRF)✓
    CL2VPN is faster
    DL3VPN is more secure
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    L2VPN: provider switches customer L2 frames (Ethernet), sites are in the same broadcast domain (VPLS/EVPN). L3VPN: provider routes customer L3 packets (IP), each site is a separate subnet connected via VRF.

  7. Question 7VPN Services

    What is EVPN and why is it replacing VPLS?

    AOlder VPN technology
    BEthernet VPN using BGP for MAC/IP advertisement with multi-homing, faster convergence, and reduced flooding compared to VPLS✓
    CSame as VPLS
    DA security feature
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    EVPN advertises MAC/IP via BGP (control plane learning vs. VPLS data plane flooding). Benefits: all-active multi-homing, ARP suppression, seamless integration with VXLAN overlay, and better scalability.

Key SP VPN Services Concepts for SPCOR

l3vpnl2vpnvplsvpwsevpnvrfrdrtpece

SPCOR SP VPN Services Exam Tips

VPN Services questions in SPCOR are typically scenario-based. Focus on service-level decision making aligned to official exam objectives. Priority concepts: l3vpn, l2vpn, vpls, vpws, evpn, vrf.

What SPCOR Expects

  • Anchor your answer in select the most practical, secure, and scalable answer for the stated scenario.
  • SP VPN Services scenarios for SPCOR are frequently mapped to Domain 3 (25%), so read the objective carefully before picking controls or architecture.
  • Expect multi-service scenarios where SP VPN Services interacts with IAM, networking, storage, or observability patterns rather than appearing as an isolated service question.
  • When two options are both technically valid, prefer the choice that best aligns with the exam's operational scope (Professional) and managed-service best practices.

High-Value SP VPN Services Concepts

  • Know the core SP VPN Services building blocks cold: l3vpn, l2vpn, vpls, vpws.
  • Review the edge-case features and limits for evpn, vrf; these details are commonly used to differentiate answer choices.
  • Practice service-integration reasoning: how SP VPN Services pairs with SP Networking, SP Automation in real deployment patterns.
  • For SPCOR, explain why the chosen SP VPN Services design meets reliability, security, and cost expectations better than the alternatives.

Common SPCOR Traps

  • Watch for answers that partially solve the requirement but miss operational constraints.
  • Questions in VPN Services often include distractors that look correct for SP VPN Services but violate least-privilege, durability, or availability requirements.
  • Avoid picking options purely by feature name; validate data path, failure handling, and governance impact before answering.
  • If the prompt hints at automation or repeatability, eliminate manual-only operational answers first.

Fast Review Checklist

  • Can you compare at least two SP VPN Services implementation paths and justify which one best fits the scenario?
  • Can you map the chosen answer back to VPN Services (25%) outcomes for SPCOR?
  • Can you explain security and access boundaries for SP VPN Services without relying on default-open assumptions?
  • Can you describe how SP VPN Services integrates with SP Networking and SP Automation during failure, scaling, and monitoring events?

Exam Domains Covering SP VPN Services

Domain 3VPN Services25%

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