🌐 SP Core Networking - SPCOR Practice Questions

Master IS-IS, OSPF, BGP, and MPLS in service provider environments including LDP, RSVP-TE, and segment routing.

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SPCOR SP Networking Question Bank (10 Questions)

Browse all 10 practice questions covering SP Core Networking for the SPCOR certification exam. Each question includes the full answer and a detailed explanation to help you understand the concepts.

  1. Question 1MPLS and Segment Routing

    What is the key advantage of Segment Routing over traditional MPLS with LDP/RSVP-TE?

    ASegment Routing requires dedicated hardware
    BIt simplifies the control plane by encoding forwarding instructions in the packet header using segments, eliminating the need for LDP or RSVP✓
    CIt supports only IPv4
    DIt eliminates the need for an IGP
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    Segment Routing (SR) encodes the forwarding path as a list of segments (instructions) in the packet header. This eliminates the need for LDP/RSVP-TE signaling protocols, simplifying the control plane while supporting traffic engineering.

  2. Question 2MPLS and Segment Routing

    What does RSVP-TE provide in an MPLS network that LDP does not?

    ABasic label distribution for shortest-path forwarding
    BExplicit traffic engineering with bandwidth reservation along specific paths✓
    CMulticast tree building
    DAuthentication of BGP peers
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    RSVP-TE extends RSVP for traffic engineering in MPLS. It allows establishing explicit LSPs along specific paths with bandwidth reservations, enabling traffic optimization and constraint-based routing that LDP cannot provide.

  3. Question 3MPLS and Segment Routing

    What advantage does Segment Routing (SR) have over traditional MPLS LDP?

    AHigher bandwidth
    BEliminates the need for LDP by encoding paths in the packet header using segment IDs✓
    CBetter encryption
    DLower cost hardware
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    Segment Routing eliminates LDP by using segment IDs (labels) derived from the IGP, simplifying the control plane while providing traffic engineering capabilities without RSVP-TE.

  4. Question 4MPLS and Segment Routing

    What is the role of Label Distribution Protocol (LDP) in an MPLS network?

    ATo establish IPsec tunnels between routers
    BTo distribute label-to-prefix bindings between MPLS routers for building LSPs✓
    CTo assign IP addresses to interfaces
    DTo discover network topology
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    LDP distributes label bindings between MPLS Label Switch Routers (LSRs), allowing them to build Label Switched Paths (LSPs). Each router assigns a local label to a prefix and advertises this binding to its LDP neighbors.

  5. Question 5MPLS and Segment Routing

    In MPLS L3VPN, which BGP address family carries VPNv4 routes between PE routers?

    AIPv4 unicast
    BVPNv4 (AFI 1, SAFI 128)✓
    CIPv6 multicast
    DFlowSpec
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    VPNv4 routes (customer IPv4 prefixes with Route Distinguishers) are exchanged between PE routers using MP-BGP with the VPNv4 address family (AFI 1, SAFI 128). Route Targets control route import/export between VRFs.

  6. Question 6MPLS and Segment Routing

    What is the purpose of RSVP-TE in an MPLS network?

    ADistribute IGP routes
    BSignal traffic-engineered LSPs with explicit path control and bandwidth reservation✓
    CProvide DNS services
    DManage firewall rules
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    RSVP-TE signals MPLS LSPs with explicit path control, enabling traffic engineering with bandwidth reservations, fast reroute, and constraint-based routing in service provider networks.

  7. Question 7Transport Technologies

    What is the purpose of RSVP-TE in MPLS networks?

    ADNS resolution
    BSignal explicit MPLS TE tunnels with bandwidth reservation, enabling traffic engineering with guaranteed resources along specific paths✓
    CVLAN assignment
    DMAC learning
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    RSVP-TE signals MPLS TE LSPs: establishes explicit paths (ERO), reserves bandwidth (admission control), provides fast reroute (FRR) for sub-50ms failover, and enables constraint-based routing.

  8. Question 8Services

    Which Inter-AS MPLS VPN option uses eBGP to exchange VPNv4 routes with next-hop-self at ASBR routers?

    AOption A (back-to-back VRF)
    BOption B (eBGP redistribution of VPNv4)✓
    COption C (multihop eBGP between RRs)
    DOption D (static tunnels)
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    Inter-AS Option B exchanges VPNv4 routes between ASBR routers via eBGP with next-hop-self. ASBRs maintain the full VPNv4 table and swap labels. It's more scalable than Option A but less scalable than Option C.

  9. Question 9Networking

    Which BGP address family supports MPLS VPN route distribution between PE routers?

    AIPv4 unicast
    BVPNv4✓
    CIPv6 multicast
    DFlowSpec
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    The VPNv4 address family (AFI 1, SAFI 128) carries VPN-IPv4 routes with Route Distinguishers between PE routers via MP-BGP, enabling MPLS L3VPN service.

  10. Question 10MPLS and Segment Routing

    Which protocol distributes MPLS labels for LDP-based label-switched paths in a service provider core?

    ABGP
    BLDP (Label Distribution Protocol)✓
    CRSVP-TE
    DOSPF
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    LDP distributes labels between adjacent MPLS routers by mapping FEC-to-label bindings, creating label-switched paths that follow the IGP shortest path through the core.

Key SP Networking Concepts for SPCOR

isisospfbgpmplsldprsvp-tesegment routinglabel switching

SPCOR SP Networking Exam Tips

SP Core Networking questions in SPCOR are typically scenario-based. Focus on service-level decision making aligned to official exam objectives. Priority concepts: isis, ospf, bgp, mpls, ldp, rsvp-te.

What SPCOR Expects

  • Anchor your answer in select the most practical, secure, and scalable answer for the stated scenario.
  • SP Networking scenarios for SPCOR are frequently mapped to Domain 2 (30%), so read the objective carefully before picking controls or architecture.
  • Expect multi-service scenarios where SP Networking 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 Networking Concepts

  • Know the core SP Networking building blocks cold: isis, ospf, bgp, mpls.
  • Review the edge-case features and limits for ldp, rsvp-te; these details are commonly used to differentiate answer choices.
  • Practice service-integration reasoning: how SP Networking pairs with SP Architecture, SP VPN Services in real deployment patterns.
  • For SPCOR, explain why the chosen SP Networking 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 Networking often include distractors that look correct for SP Networking 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 Networking implementation paths and justify which one best fits the scenario?
  • Can you map the chosen answer back to Networking (30%) outcomes for SPCOR?
  • Can you explain security and access boundaries for SP Networking without relying on default-open assumptions?
  • Can you describe how SP Networking integrates with SP Architecture and SP VPN Services during failure, scaling, and monitoring events?

Exam Domains Covering SP Networking

Domain 2Networking30%

Related Resources

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