🌐 Data Center Networking - DCCOR Practice Questions

Study Cisco Nexus platforms, VPC, FabricPath, VXLAN with EVPN, OTV, and data center network design patterns including spine-leaf architecture.

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DCCOR DC Networking Question Bank (17 Questions)

Browse all 17 practice questions covering Data Center Networking for the DCCOR certification exam. Answers are intentionally hidden on this page so you can self-test first before checking results in quiz mode.

  1. Question 1Networking

    Which routing protocol is most commonly used as the underlay in a VXLAN BGP EVPN data center fabric?

    ARIPv2
    BEIGRP
    COSPF or IS-IS
    DStatic routing

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  2. Question 2Networking

    What is the primary purpose of VXLAN in a data center fabric?

    ATo provide Layer 3 routing between VRFs
    BTo extend Layer 2 segments over a Layer 3 infrastructure using UDP encapsulation
    CTo compress data packets for WAN optimization
    DTo encrypt east-west traffic between servers

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  3. Question 3Networking

    What is Overlay Transport Virtualization (OTV) used for in data center networking?

    ATo extend Layer 2 connectivity between data center sites over a Layer 3 network
    BTo provide server virtualization
    CTo encrypt all inter-data-center traffic
    DTo load-balance server workloads

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  4. Question 4Networking

    What does a Cisco Nexus virtual port channel (vPC) provide?

    AEncryption between two Nexus switches
    BA port channel that spans two physical Nexus switches, appearing as one to downstream devices
    CVirtual routing instances on a single switch
    DA tunnel for inter-VLAN routing

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  5. Question 5Networking

    In a VXLAN BGP EVPN fabric, what does the EVPN control plane provide?

    AStatic VXLAN tunnel configuration
    BDynamic distribution of MAC and IP reachability information using BGP
    CSTP-based loop prevention
    DManual ARP table management

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  6. Question 6Networking

    What is the purpose of a spine-leaf architecture in data centers?

    AHierarchical three-tier design
    BA two-tier topology where every leaf connects to every spine, providing consistent latency and bandwidth for east-west traffic
    CStar topology
    DRing topology

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  7. Question 7Security

    Which AAA protocol is recommended for device administration on Cisco Nexus data center switches?

    ARADIUS
    BTACACS+
    CKerberos
    DLDAP

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  8. Question 8Networking

    Which multicast protocol is commonly used in data center fabrics for BUM traffic handling in VXLAN environments?

    APIM Sparse Mode with multicast underlay
    BDVMRP
    CMOSPF
    DPIM Dense Mode

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  9. Question 9Security

    What does MACsec provide between Cisco Nexus switches in a data center fabric?

    AApplication-layer encryption
    BHop-by-hop Layer 2 encryption, integrity, and replay protection on inter-switch links
    CSSL certificate management
    DVXLAN encapsulation

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  10. Question 10Networking

    What is the purpose of VXLAN in a data center network?

    AEncrypt east-west traffic
    BExtend Layer 2 networks over a Layer 3 infrastructure using UDP encapsulation
    CProvide DNS services
    DManage IP addresses

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  11. Question 11Security

    Which Cisco data center security feature provides micro-segmentation within a VXLAN fabric?

    AStandard ACLs
    BSGT (Security Group Tags) with Cisco TrustSec
    CPort security
    DDHCP snooping

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  12. Question 12Networking

    What is VXLAN and why is it used in data centers?

    AA VLAN extension
    BAn overlay network protocol that encapsulates L2 frames in UDP/IP, extending L2 segments over L3 infrastructure with 16M segment IDs
    CA VPN protocol
    DA QoS mechanism

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  13. Question 13Networking

    What is the benefit of a distributed anycast gateway in a VXLAN EVPN fabric?

    AIt requires only one leaf to handle all routing
    BEvery leaf switch acts as the default gateway for local hosts, enabling optimal east-west routing
    CIt eliminates the need for IP addresses
    DIt provides firewall functionality on each leaf

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  14. Question 14Networking

    Which technology provides first-hop gateway redundancy in a VXLAN EVPN fabric?

    AHSRP
    BVRRP
    CAnycast gateway (distributed gateway)
    DGLBP

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  15. Question 15Networking

    What is the role of MP-BGP EVPN in a VXLAN fabric?

    AUnderlay routing
    BOverlay control plane for distributing MAC/IP reachability information
    CDNS resolution
    DQoS marking

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  16. Question 16Networking

    What is a vPC (virtual PortChannel) on Nexus switches?

    AA virtual private cloud
    BA feature allowing two physical Nexus switches to appear as a single logical switch for downstream devices using port channels
    CA VPN connection
    DA virtual port

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  17. Question 17Networking

    What is EVPN in a VXLAN fabric?

    AEthernet VPN using traditional L2
    BA control plane protocol using MP-BGP to distribute MAC/IP and VNI-to-VTEP mappings, replacing flood-and-learn in VXLAN
    CAn encryption protocol
    DA monitoring tool

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Key DC Networking Concepts for DCCOR

nexusvpcvxlanevpnfabricpathotvspine-leafdata center

DCCOR DC Networking Exam Tips

Data Center Networking questions in DCCOR are typically scenario-based. Focus on service-level decision making aligned to official exam objectives. Priority concepts: nexus, vpc, vxlan, evpn, fabricpath, otv.

What DCCOR Expects

  • Anchor your answer in select the most practical, secure, and scalable answer for the stated scenario.
  • DC Networking scenarios for DCCOR are frequently mapped to Domain 1 (25%), so read the objective carefully before picking controls or architecture.
  • Expect multi-topic scenarios where DC Networking interacts with routing, switching, security, or automation patterns rather than appearing as an isolated question.
  • When two options are both technically valid, prefer the choice that best aligns with the exam's operational scope (Professional) and vendor best practices.

High-Value DC Networking Concepts

  • Know the core DC Networking building blocks cold: nexus, vpc, vxlan, evpn.
  • Review the edge-case features and limits for fabricpath, otv; these details are commonly used to differentiate answer choices.
  • Practice service-integration reasoning: how DC Networking pairs with DC Compute, DC Automation in real deployment patterns.
  • For DCCOR, explain why the chosen DC Networking design meets reliability, security, and cost expectations better than the alternatives.

Common DCCOR Traps

  • Watch for answers that partially solve the requirement but miss operational constraints.
  • Questions in Networking often include distractors that look correct for DC Networking but violate security policy, convergence, or redundancy 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 DC Networking implementation paths and justify which one best fits the scenario?
  • Can you map the chosen answer back to Networking (25%) outcomes for DCCOR?
  • Can you explain security and access boundaries for DC Networking without relying on default-open assumptions?
  • Can you describe how DC Networking integrates with DC Compute and DC Automation during failure, scaling, and monitoring events?

Exam Domains Covering DC Networking

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