🌐 Data Center Networking Basics - CCTDC Practice Questions

Learn basic data center networking: Nexus NX-OS, VLANs, port channels, VPC, and SAN concepts (FC, FCoE, zoning).

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CCTDC DC Networking Question Bank (12 Questions)

Browse all 12 practice questions covering Data Center Networking Basics for the CCTDC certification exam. Answers are intentionally hidden on this page so you can self-test first before checking results in quiz mode.

  1. Question 1Cisco Data Center Administration

    What does Virtual Port Channel (VPC) provide on Nexus switches?

    AVLAN tagging
    BAllows a device to form a port-channel across two Nexus switches, eliminating spanning tree blocking and providing active-active paths
    CVirtual machine management
    DStorage encryption

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  2. Question 2Cisco Data Center Administration

    What is zoning in a Fibre Channel SAN?

    APhysical rack placement
    BAccess control that defines which initiators (servers) can communicate with which targets (storage) on the SAN fabric
    CVLAN assignment for data traffic
    DPower zone management

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  3. Question 3Data Center Software and Configuration

    What is a vPC (virtual Port Channel) on Nexus switches?

    AA virtual VLAN
    BA technology allowing two Nexus switches to appear as a single logical switch to downstream devices, providing active-active redundancy
    CA virtual router
    DA VPN connection

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  4. Question 4Cisco Data Center Troubleshooting

    What is the first thing to check when a Virtual Port Channel (VPC) is not coming up?

    ADNS resolution
    BVPC peer link status, VPC domain configuration consistency, and peer keepalive connectivity between switches
    CDHCP configuration
    DNTP synchronization

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  5. Question 5Cisco Data Center Troubleshooting

    What is a common cause of FCoE (Fibre Channel over Ethernet) connectivity problems?

    AIP address conflicts
    BMissing or incorrect DCB (Data Center Bridging) configuration including PFC (Priority Flow Control) and ETS settings
    CDNS misconfiguration
    DNTP drift

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  6. Question 6Cisco Data Center Troubleshooting

    Why might a port-channel on a Nexus switch show individual links as suspended?

    AThe switch is out of memory
    BLACP parameter mismatch, speed/duplex mismatch, or incompatible port-channel mode (static vs active/passive) between the two ends
    CThe cable is too long
    DThe power supply is failing

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  7. Question 7Cisco Data Center Administration

    How are VLANs created on a Cisco Nexus switch?

    AThey are automatically created
    BUsing 'vlan <id>' in global config, then assigning a name, and assigning access or trunk ports
    CUsing the web interface only
    DVLANs are not supported on Nexus

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  8. Question 8Cisco Data Center Administration

    What is a Virtual Port Channel (vPC) in Cisco NX-OS?

    AA VLAN trunking protocol
    BA technology allowing links from two switches to appear as one port-channel to a downstream device
    CA virtual routing instance
    DA storage virtualization feature

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  9. Question 9Cisco Data Center Administration

    Which NX-OS command displays the vPC status and peer-link health between two Nexus switches?

    Ashow spanning-tree
    Bshow vpc
    Cshow port-channel summary
    Dshow vlan

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  10. Question 10Cisco Data Center Troubleshooting

    A vPC peer-link between two Nexus switches is down. What is the MOST critical impact?

    AAll vPC member ports go down on the secondary switch
    BOSPF adjacencies fail
    CAll VLANs are deleted
    DNTP synchronization stops

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  11. Question 11Cisco Data Center Troubleshooting

    A server connected to a Nexus switch via vPC is experiencing intermittent connectivity. Which log should be checked first?

    Ashow logging | include vpc
    Bshow tech-support
    Cshow environment
    Dshow ntp status

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  12. Question 12Cisco Data Center Troubleshooting

    A Nexus vPC keeps flapping. What is a common cause?

    AIncorrect hostname
    BvPC peer-link misconfiguration, inconsistent vPC parameters, or physical link issues between peers
    CWrong DNS server
    DIncorrect time zone

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Key DC Networking Concepts for CCTDC

nexusnxosvlanport channelvpcfibre channelfcoezoning

CCTDC DC Networking Exam Tips

Data Center Networking Basics questions in CCTDC are typically scenario-based. Focus on service-level decision making aligned to official exam objectives. Priority concepts: nexus, nxos, vlan, port channel, vpc, fibre channel.

What CCTDC Expects

  • Anchor your answer in select the most practical, secure, and scalable answer for the stated scenario.
  • DC Networking scenarios for CCTDC are frequently mapped to Domain 2 (30%), 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 (Entry) and vendor best practices.

High-Value DC Networking Concepts

  • Know the core DC Networking building blocks cold: nexus, nxos, vlan, port channel.
  • Review the edge-case features and limits for vpc, fibre channel; these details are commonly used to differentiate answer choices.
  • Practice service-integration reasoning: how DC Networking pairs with DC Hardware, DC Troubleshooting in real deployment patterns.
  • For CCTDC, explain why the chosen DC Networking design meets reliability, security, and cost expectations better than the alternatives.

Common CCTDC Traps

  • Watch for answers that partially solve the requirement but miss operational constraints.
  • Questions in Data Center Networking and Software 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 Data Center Networking and Software (30%) outcomes for CCTDC?
  • 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 Hardware and DC Troubleshooting during failure, scaling, and monitoring events?

Exam Domains Covering DC Networking

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