📊 Network Assurance & Monitoring - ENCOR Practice Questions

Learn SNMP, IP SLA, NetFlow, Cisco DNA Center Assurance, SPAN/RSPAN/ERSPAN for traffic monitoring, and how to use telemetry for proactive network management.

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ENCOR Network Assurance Question Bank (6 Questions)

Browse all 6 practice questions covering Network Assurance & Monitoring for the ENCOR certification exam. Each question includes the full answer and a detailed explanation to help you understand the concepts.

  1. Question 1Network Assurance

    What does ERSPAN add beyond RSPAN?

    AEncryption of mirrored traffic
    BGRE encapsulation to mirror traffic across Layer 3 boundaries✓
    CCompression of mirrored packets
    DFiltering based on ACLs
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    ERSPAN (Encapsulated RSPAN) encapsulates mirrored traffic in GRE, allowing it to traverse Layer 3 boundaries. RSPAN requires a dedicated VLAN across Layer 2 only.

  2. Question 2Network Assurance

    What is the difference between SPAN, RSPAN, and ERSPAN?

    AThey are all identical
    BSPAN mirrors traffic locally; RSPAN extends across switches using a VLAN; ERSPAN encapsulates in GRE for monitoring across routed networks✓
    CERSPAN only works on routers
    DRSPAN requires MPLS
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    SPAN: mirror source port(s) to local destination port (same switch). RSPAN: carry mirrored traffic across trunks using a dedicated RSPAN VLAN to a remote switch. ERSPAN: encapsulate mirrored traffic in GRE, transport across L3 networks — most flexible, supports remote monitoring across subnets.

  3. Question 3Architecture

    What does Cisco DNA Center Assurance provide?

    AAutomated device provisioning only
    BProactive network health monitoring, issue detection, and guided remediation✓
    CFirewall policy management
    DEnd-user identity management
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    DNA Center Assurance uses AI/ML analytics to monitor network health, detect issues proactively, and provide guided remediation steps for client, network, and application problems.

  4. Question 4Network Assurance

    What does DNA Center Assurance provide for network operations?

    AOnly device inventory
    BAI/ML-driven network analytics: health scores, issue correlation, root cause analysis, path trace, client experience monitoring, and proactive insights✓
    COnly configuration backup
    DOnly software updates
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    DNA Center Assurance: health dashboards (network, client, application scores), AI-driven issue detection and root cause analysis, network time travel (historical state), path trace (visualize traffic path), client 360 view (connectivity timeline), and proactive recommendations. Reduces MTTR significantly.

  5. Question 5Network Assurance

    How does model-driven telemetry differ from SNMP polling?

    AIt uses pull-based data collection only
    BIt pushes data from devices at defined intervals or on change✓
    CIt requires more CPU on the network device
    DIt only supports YANG models from Cisco
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    Model-driven telemetry pushes structured data (using YANG models) from devices to collectors, providing near-real-time monitoring without the overhead of SNMP polling.

  6. Question 6Automation

    What is model-driven telemetry and how does it differ from SNMP polling?

    AIt's the same as SNMP
    BDevices push structured data (YANG models) in real-time to collectors — more efficient, granular, and faster than SNMP's pull-based polling approach✓
    CIt only works with CLI scraping
    DIt requires manual data collection
    Show Answer & Explanation
    Correct Answer: B
    Explanation:

    Model-driven telemetry: devices stream structured data (based on YANG models) at configured intervals — push-based, near-real-time. Transport: gRPC, TCP, UDP. Encoding: GPB (compact), JSON. Advantages over SNMP: no polling overhead, sub-second intervals, structured data, scales better with many devices.

Key Network Assurance Concepts for ENCOR

snmpip slanetflowspanrspanerspandna centerassurancetelemetrysyslog

ENCOR Network Assurance Exam Tips

Network Assurance & Monitoring questions in ENCOR are typically scenario-based. Focus on service-level decision making aligned to official exam objectives. Priority concepts: snmp, ip sla, netflow, span, rspan, erspan.

What ENCOR Expects

  • Anchor your answer in select the most practical, secure, and scalable answer for the stated scenario.
  • Network Assurance scenarios for ENCOR are frequently mapped to Domain 4 (10%), so read the objective carefully before picking controls or architecture.
  • Expect multi-service scenarios where Network Assurance 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 Network Assurance Concepts

  • Know the core Network Assurance building blocks cold: snmp, ip sla, netflow, span.
  • Review the edge-case features and limits for rspan, erspan; these details are commonly used to differentiate answer choices.
  • Practice service-integration reasoning: how Network Assurance pairs with Automation, Infrastructure, Architecture in real deployment patterns.
  • For ENCOR, explain why the chosen Network Assurance design meets reliability, security, and cost expectations better than the alternatives.

Common ENCOR Traps

  • Watch for answers that partially solve the requirement but miss operational constraints.
  • Questions in Network Assurance often include distractors that look correct for Network Assurance 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 Network Assurance implementation paths and justify which one best fits the scenario?
  • Can you map the chosen answer back to Network Assurance (10%) outcomes for ENCOR?
  • Can you explain security and access boundaries for Network Assurance without relying on default-open assumptions?
  • Can you describe how Network Assurance integrates with Automation and Infrastructure during failure, scaling, and monitoring events?

Exam Domains Covering Network Assurance

Domain 4Network Assurance10%

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