VCDX-DCV Sample Questions & Answers
Developing the solution architecture itself carries the most weight, next to gathering availability and manageability requirements, writing engineering specs for compute and VM resources, implementation plans, risk management, and a live design exercise.
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- Question 1Advanced
Customer Requirements · Performance Requirements
A Service Provider requires a multi-tenant design where tenants must have dedicated compute resources that cannot be shared with others, yet the provider wants to manage a single large cluster to maximize operational efficiency. Which vSphere feature best addresses this specific requirement?
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Correct answer: C
Resource Pools with Reservations allow the provider to logically partition a single cluster. By setting a reservation, the provider guarantees physical RAM/CPU resources to a tenant, effectively dedicating those resources within a shared management construct.
- Question 2Intermediate
Customer Requirements · Availability Requirements
In a design interview, a stakeholder mentions, 'We need the system to be up 99.99% of the time.' The architect calculates the allowable downtime per year to validate this SLA. What is the approximate allowable downtime for 99.99% availability?
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Correct answer: B
99.99% availability (Four Nines) allows for approximately 52.56 minutes of downtime per year. (365 days * 24 hours * 60 minutes = 525,600 minutes. 0.01% of that is ~52.56 minutes).
- Question 3Advanced
Solution Architecture · Complete Solution Design and Documentation
Analyze the following Conceptual Design diagram showing a proposed multi-site architecture. Based on the VCDX methodology, which critical element is missing that is required to map this concept to a Logical Design?
graph LR Users((Users)) --> LB[Load Balancer] LB --> Web[Web Tier] Web --> App[App Tier] App --> DB[(Database)] subgraph Site A Web App DB end subgraph Site B DR_Web[Web Tier] DR_App[App Tier] DR_DB[(Database)] end DB -.->|Replication?| DR_DBShow answer & explanation
Correct answer: D
A conceptual design maps requirements to high-level components. To progress to a Logical design (which defines how components interact), the replication relationship (the dotted line) must be defined by requirements (RPO/RTO) and selected technology (async vs sync). Without defining the replication method/SLA, the logical design cannot be constructed.
- Question 4IntermediateSelect 2
Customer Requirements · Requirements Gathering and Stakeholder Engagement
Which TWO of the following statements correctly distinguish a Constraint from a Requirement in a VCDX design scenario? (Select TWO)
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Correct answers: A, D
Correct. Requirements are functional or non-functional needs (e.g., 'must support 1000 users'). Constraints are limitations (e.g., 'must use existing Dell servers').
Correct. Constraints restrict design choices (e.g., regulatory compliance, specific vendor contracts).
- Question 5Beginner
Customer Requirements · Requirements Gathering and Stakeholder Engagement
True or False: In a VCDX design, an 'Assumption' is a design decision that has been validated by the customer.
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Correct answer: B
False. An assumption is a premise believed to be true but NOT yet validated. Once validated, it becomes a fact or requirement. If it remains an assumption during implementation, it constitutes a Risk.
- Question 6Advanced
Solution Architecture · Performance Architecture Design
An architect is designing a vSAN 8.0 cluster using the Express Storage Architecture (ESA). The customer requires maximum storage efficiency for their database logs which are highly compressible. Which RAID policy should be selected to maximize usable capacity while maintaining FTT=2?
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Correct answer: A
vSAN ESA provides optimized RAID-6 erasure coding that delivers space efficiency comparable to RAID-5 in OSA but with FTT=2 protection. Combined with ESA's native compression (which is enabled by default and highly efficient), this offers the best usable capacity for compressible data while meeting the FTT=2 availability requirement.
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