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2026 Statistics

Key Facts: NCM-MCI Exam

180 min

Time Limit

Nutanix

16-20

Live-Lab Scenarios

Nutanix Blueprint

3000/6000

Passing Score

Nutanix

$300

Exam Fee

Nutanix 2026

5

Blueprint Sections

Nutanix NCM-MCI Blueprint

NCP

Required Prerequisite

Nutanix

The NCM-MCI exam is a 180-minute live-lab performance test with approximately 16-20 weighted scenarios scored 1000-6000 (3000 to pass). Five blueprint sections cover Storage Performance Analysis, Network Performance Analysis, Advanced Configuration & Troubleshooting, VM Performance Analysis, and Business Continuity. Candidates must hold an active NCP- or NCM-level certification.

Sample NCM-MCI Practice Questions

Try these sample questions to test your NCM-MCI exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1An architect must justify the storage tier mix for a new AOS cluster running an OLTP database. Which Stargate behavior most directly drives the recommendation to keep the SSD tier above 20% of total capacity?
A.Stargate writes all OpLog data to HDD by default and only promotes to SSD after Curator scans
B.Stargate uses the SSD tier for OpLog (random write) and the unified cache, so insufficient SSD increases write latency and read miss penalty
C.Stargate can only mirror metadata across HDDs when SSD utilization is below 20%
D.Stargate disables compression when the SSD tier exceeds 20% utilization
Explanation: OpLog (the persistent random-write coalescer) and the Unified Cache live on SSD. When SSD capacity is too small, OpLog draining and cache hit ratios degrade, raising both write and read latency. Sizing guidance keeps the SSD tier large enough to absorb working set + OpLog churn.
2A workload shows high read latency on a container with EC-X enabled. Curator scans run normally and the working set fits the SSD tier. Which design tradeoff best explains the latency?
A.EC-X stripes data across nodes, so reads of cold strips can incur additional network and rebuild compute compared to RF2 mirrored extents
B.EC-X disables the unified cache for any container that uses erasure coding
C.EC-X requires synchronous reads from all RF copies, doubling the network traffic
D.EC-X stores the parity strip on the same node as the data, eliminating data locality
Explanation: Erasure Coding (EC-X) replaces the second mirror copy with a parity strip across nodes. Cold/random reads of EC-X-encoded extents may need to fetch strips across the network, and any rebuild path is more expensive than reading a local mirror. EC-X is therefore best for cold/cool data, not latency-sensitive working sets.
3Which AOS service is responsible for cluster configuration, leadership election, and lock service for distributed components?
A.Cassandra
B.Zookeeper
C.Curator
D.Genesis
Explanation: Zookeeper provides cluster-wide configuration data, leader election, and distributed locking for Nutanix services. Three or five Zookeeper instances run on dedicated CVMs.
4An architect must reclaim space on a dense 12-node AHV cluster used for cool archives. The workload is mostly sequential, write-once. Which combination of storage container settings best matches the goal of minimum capacity overhead while preserving acceptable read performance?
A.Inline compression off, post-process compression on, deduplication on, EC-X on
B.Inline compression on, post-process compression off, deduplication off, EC-X on
C.Inline compression off, post-process compression off, deduplication on, EC-X off
D.Inline compression on, post-process compression on, deduplication on, EC-X off
Explanation: Sequential write-once data benefits from inline compression (no post-process double work), gains little from dedup (write-once means few duplicates), and is a good EC-X candidate (cold, infrequent reads). Disabling dedup avoids fingerprint metadata cost.
5A cluster shows persistent Curator full-scan delays. Which symptom is the strongest indicator that Curator capacity is the bottleneck rather than Stargate?
A.I/O latency at the VM level rises during peak hours
B.Background tasks such as EC-X encoding, dedup post-process, and tier rebalancing fall behind the configured target lag
C.OpLog flush rate increases linearly with workload
D.vDisk creation operations time out in Prism
Explanation: Curator orchestrates background MapReduce tasks (EC-X, dedup post-process, ILM tier movement, garbage collection). When Curator is overloaded, those background tasks lag — visible as growing space reclamation backlog and EC-X/dedup tasks not completing on schedule.
6A latency-sensitive VM exhibits noisy-neighbor symptoms. Prism shows the VM's reads frequently traverse the network despite the working set being small. What is the most likely cause and remediation?
A.Data locality has been disrupted by recent ADS migrations; investigate ADS thresholds and consider VM affinity rules tied to the host that holds the working set
B.EC-X is enabled and forces cross-node reads; disable EC-X cluster-wide
C.The CVM on the host is undersized; rebuild the cluster with larger CVMs
D.RF2 has been changed to RF3, which always doubles network reads
Explanation: Stargate maintains data locality so reads are served from the local CVM when possible. Frequent ADS migrations or affinity violations can disrupt locality, causing reads to traverse the network. Tuning ADS or using VM-host affinity preserves locality for sensitive workloads.
7Which Nutanix component stores the metadata mapping between vDisks and physical extents, replicated across CVMs for fault tolerance?
A.Stargate
B.Cassandra
C.Pithos
D.Medusa
Explanation: Cassandra is the distributed metadata store on each CVM that holds vDisk metadata, dedup fingerprints, and other per-extent data. It replicates with quorum-based writes for fault tolerance.
8An NDB-managed Oracle workload on AHV needs predictable I/O during NDB time machine operations. Which storage container setting most directly limits noisy-neighbor impact from snapshot churn?
A.Enable inline deduplication on the container
B.Place the database vDisks on a dedicated storage container with appropriate compression and reserved capacity rather than sharing with general workloads
C.Disable EC-X on the cluster
D.Set RF1 on the container to reduce write amplification
Explanation: Storage container isolation lets the architect set distinct compression/dedup/EC-X policies and reserve capacity, preventing snapshot/clone churn from mixing with other workloads. RF1 is not supported as a production resiliency level for primary data.
9Which statement about the Extent Store is correct?
A.It only contains data on HDDs and never on SSDs
B.It is the persistent storage tier where extent groups land after they leave OpLog, spread across SSD and HDD per ILM policy
C.It stores Cassandra metadata only
D.It is replaced by Cassandra in AOS 6.x
Explanation: The Extent Store is the persistent data store on each CVM. Data is drained from OpLog into the Extent Store (SSD), then ILM (Information Lifecycle Management) moves cold data down to HDD when needed.
10An architect is sizing a 4-node AHV cluster with FT1/RF2 to host workloads requiring 100 TiB of usable capacity. Which design factor must be added on top of raw drive capacity to size the nodes correctly?
A.Subtract only RF2 overhead (50%)
B.Subtract RF2 overhead, reserve N+1 node failure capacity, account for compression/dedup savings as a planning estimate, and reserve approximately 5% Curator/garbage headroom
C.Add 25% capacity to compensate for OpLog
D.Multiply usable by 3 because Cassandra metadata triples the requirement
Explanation: Sizing methodology: start with raw, halve for RF2, reserve N+1 node failure capacity, plan for data reduction conservatively (do not bake it in as guarantee), and leave headroom for Curator background tasks and garbage. Sizer tools encode this approach.

About the NCM-MCI Exam

NCM-MCI is the top-tier Nutanix Master certification for multicloud infrastructure architects. Unlike the multiple-choice NCP-MCI Professional exam, NCM-MCI is delivered as a live-lab performance exam in a real Nutanix multi-cluster environment, validating deep design, sizing, performance analysis, advanced troubleshooting, and BCDR architecture skills.

Questions

17 scored questions

Time Limit

180 minutes

Passing Score

3000 of 6000 (scaled)

Exam Fee

$300 (Nutanix University)

NCM-MCI Exam Content Outline

Section 1

Storage Performance Analysis

Analyze and optimize storage settings, evaluate competing workload requirements, and outline storage internals (Stargate, OpLog, Extent Store, EC-X, dedup, compression, ILM).

Section 2

Network Performance Analysis

Analyze and optimize overlay networking, evaluate physical/virtual networks, implement advanced AHV bond configurations, and tune Flow Network Security policies.

Section 3

Advanced Configuration & Troubleshooting

Execute API/CLI operations, configure third-party integrations (KMS, SAML, backup), harden AOS security posture, translate business requirements into design, and troubleshoot Nutanix services.

Section 4

VM Performance Analysis

Manipulate VM configuration for resource utilization and interpret VM, node, and cluster metrics through Prism Central analysis.

Section 5

Business Continuity

Analyze BCDR plans for compliance with business objectives and evaluate them for specific workloads (Async DR, NearSync, Metro Availability, Nutanix DR).

How to Pass the NCM-MCI Exam

What You Need to Know

  • Passing score: 3000 of 6000 (scaled)
  • Exam length: 17 questions
  • Time limit: 180 minutes
  • Exam fee: $300

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

NCM-MCI Study Tips from Top Performers

1Build a multi-cluster home lab (or use Nutanix Test Drive / community labs) and rehearse storage container, Volume Group, Files, and DR configurations end-to-end
2Master Stargate, OpLog, Extent Store, Curator, Cassandra, and Zookeeper roles so you can diagnose performance from first principles
3Practice all four AHV bond modes (active-backup, balance-slb, balance-tcp/LACP, no-bond) and Flow policy lifecycles (Monitor to Apply)
4Work through Async DR, NearSync, and Metro Availability with planned and unplanned failover, including Recovery Plan stages and IP customization
5Time yourself: 180 minutes across 16-20 weighted scenarios is tight, so build muscle memory for common tasks via API/CLI, not just Prism clicks

Frequently Asked Questions

What is the NCM-MCI exam format?

NCM-MCI is a live-lab performance exam, not a multiple-choice test. Candidates work in a real Nutanix multi-cluster environment to complete approximately 16-20 weighted scenarios in 180 minutes. Scoring is scaled from 1000-6000 with a passing score of 3000.

How is NCM-MCI different from NCP-MCI?

NCP-MCI is the Professional tier and uses ~75 multiple-choice and multiple-response questions. NCM-MCI is the Master tier and uses live-lab scenarios that test deep design, sizing, performance analysis, advanced troubleshooting, and BCDR architecture. NCM-MCI also requires an active NCP- or NCM-level certification as a prerequisite.

How much does the NCM-MCI exam cost?

The NCM-MCI exam fee is $300 USD per attempt. Promotional discount codes (50% or 100% off) are sometimes available through Nutanix events, .NEXT, and Nutanix University communications.

What are the prerequisites for NCM-MCI?

Candidates must hold an active, non-expired Nutanix NCP- or NCM-level certification (NCP-MCI is the typical pathway). Nutanix also recommends 5+ years of IT infrastructure experience and 3+ years working with Nutanix solutions.

What topics are covered in the NCM-MCI blueprint?

Five sections: Storage Performance Analysis, Network Performance Analysis, Advanced Configuration & Troubleshooting, VM Performance Analysis, and Business Continuity. Scenarios test architecture decisions, sizing methodology, performance tuning, advanced configuration (API, CLI, security), and BCDR design (Async, NearSync, Metro, Nutanix DR).

How should I prepare for the NCM-MCI live-lab exam?

Take the Advanced Administration & Performance Management (AAPM) course, get hands-on time with a multi-cluster lab (or NCN/community labs), master nCLI/acli/Prism Central v3 and v4 APIs, and practice timed scenario completion. Treat each blueprint topic as a potential live-lab task you must demonstrate, not just describe.