VCP-VVF IT Architectures Technologies Standards Practice Question
An infrastructure designer is evaluating storage protocols for a high-performance vSphere Foundation 9.0 database cluster. Which architectural characteristic distinguishes NVMe-oF over RDMA (RoCEv2) from traditional NVMe-oF TCP?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
RDMA utilizes direct memory-to-memory transfers between storage and host memory, bypassing the CPU network stack for lower latency.
RoCEv2 (RDMA over Converged Ethernet) bypasses the host operating system network stack entirely using hardware offload, whereas NVMe-oF TCP processes packets through the standard TCP/IP stack.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
RDMA restricts maximum block transfer sizes to 4KB, whereas TCP supports unlimited block sizes.
Why it's wrong here
Block transfer sizes are dictated by filesystem and controller settings, not this restriction.
- ✗
TCP encrypts all storage payloads by default, whereas RDMA requires an external IPsec gateway.
Why it's wrong here
Neither protocol provides encryption natively by default without explicit configuration.
- ✓
RDMA utilizes direct memory-to-memory transfers between storage and host memory, bypassing the CPU network stack for lower latency.
Why this is correct
Correct. RDMA avoids CPU stack processing overhead, resulting in ultra-low latency.
- ✗
NVMe-oF TCP requires dedicated Fibre Channel switches, whereas RDMA runs on standard unmanaged Ethernet switches.
Why it's wrong here
NVMe-oF TCP runs on standard IP networks, while RoCEv2 requires specially tuned lossless Ethernet switches.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official VMware exam blueprint
This VCP-VVF practice question is part of Courseiva's free VMware certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the VCP-VVF exam.