NCS-CORE practice question 35 of 35

A customer has engaged a Nutanix consultant to deploy a cluster consisting of two NX-3460-G6 blocks. The consultant arrives at the customer site and fines the following: * One rack with a total of 5U available * Two ToR switches with 14 total available ports * Dual PDUs with six available sockets What will prevent the consultant from successfully installing the cluster?

Full set: 302 questions
Answer options
A: Insufficient sockets for power allocation. Rack space may not be continuous.
B: Insufficient rack space for block installation. Insufficient sockets for power allocation.
C: Insufficient network ports for communication. Insufficient sockets for power allocation.
D: Insufficient network ports for communication. Insufficient sockets for power allocation.
E: Insufficient network ports for communication. Rack space may not be continuous. Correct answer
Correct Answer:
E. Insufficient network ports for communication. Rack space may not be continuous.
Explanation

An NX-3460-G6 is a 2U, 4-node block. Two blocks require 8 nodes. For basic redundant connectivity, each node requires two data ports (e.g., 10/25 GbE) and one IPMI port. This totals 3 ports per node, or 24 ports for the 8-node cluster (8 nodes 3 ports/node). With only 14 ports available, there is a significant shortfall that will prevent a successful installation. Additionally, while the total 5U of rack space is technically sufficient for two 2U blocks (4U total), if the space is not contiguous (e.g., 3U in one location, 2U in another), it would also prevent the installation of a 2U block.

Why Incorrect

A. Power is sufficient (4 PSUs need 4 sockets; 6 are available). The rack space continuity is a potential issue, but the network port deficit is a definite blocker.
B. Rack space is sufficient (4U needed, 5U available). Power sockets are also sufficient. This option incorrectly identifies both constraints.
C. This option correctly identifies the network port issue but incorrectly states there are insufficient power sockets.
D. This option is identical to C, correctly identifying the network port issue but incorrectly stating there are insufficient power sockets.

References

1. Nutanix Hardware Platform Documentation, NX-3460-G6 Specifications. (Confirms 2U chassis and 4 nodes per block).

2. Nutanix Physical Networking Best Practices Guide, "Port Requirements" section. (Details the requirement for redundant data ports and a dedicated IPMI port per node).

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