Exam 3V0-12.26 Topic 1 Question 27 Discussion
Actual exam question for VMware's 3V0-12.26 exam
Question #: 27
Topic #: 1
Question #: 27
Topic #: 1
An architect is responsible for designing a VMware Cloud Foundation (VCF) solution for a customer. The customer has provided the following requirements:
* There should be no single points of failure within the solution.
* The solution should survive the loss of any switch or networking interface card (NIC) with no downtime.
* The solution should survive the loss of any single host with minimal downtime.
* The solution should survive the loss of any rack with minimal downtime.
When documenting this design decision, which two consideration(s) should the architect make? (Choose two.)
* There should be no single points of failure within the solution.
* The solution should survive the loss of any switch or networking interface card (NIC) with no downtime.
* The solution should survive the loss of any single host with minimal downtime.
* The solution should survive the loss of any rack with minimal downtime.
When documenting this design decision, which two consideration(s) should the architect make? (Choose two.)
Suggested Answer: B,E Vote an answer
B and E provide the required physical-network redundancy without introducing common single points of failure.
B is essential because NIC teaming should use uplinks located on different physical NIC cards . If both teamed ports reside on the same adapter, failure of that adapter, PCIe device, or associated hardware path can remove both uplinks simultaneously. Using separate physical adapters preserves connectivity when one NIC card fails. vSphere NIC teaming provides passive failover when one network adapter or network path becomes unavailable.
E is correct because each rack should contain redundant Top-of-Rack switches , with every ESX host connected to both switches. Loss or maintenance of one ToR therefore leaves the host connected through the surviving uplink and switch. Broadcom ' s operational guidance specifically validates redundant ToR designs by requiring each ESX host to have active uplinks to both ToR switches and confirming that traffic continues when either uplink is disabled.
C retains a NIC-card-level single point of failure. D creates a rack-level network failure domain. A requires cross-rack host cabling and is not the standard ToR redundancy pattern; rack resilience is achieved by distributing cluster hosts across racks while providing redundant ToRs within each rack.
Study Guide References/Topics: VCF Physical Network Design; NIC-Level Redundancy; NIC Teaming; Dual ToR Design; Rack Fault Domains; vSphere HA; Elimination of Single Points of Failure.
B is essential because NIC teaming should use uplinks located on different physical NIC cards . If both teamed ports reside on the same adapter, failure of that adapter, PCIe device, or associated hardware path can remove both uplinks simultaneously. Using separate physical adapters preserves connectivity when one NIC card fails. vSphere NIC teaming provides passive failover when one network adapter or network path becomes unavailable.
E is correct because each rack should contain redundant Top-of-Rack switches , with every ESX host connected to both switches. Loss or maintenance of one ToR therefore leaves the host connected through the surviving uplink and switch. Broadcom ' s operational guidance specifically validates redundant ToR designs by requiring each ESX host to have active uplinks to both ToR switches and confirming that traffic continues when either uplink is disabled.
C retains a NIC-card-level single point of failure. D creates a rack-level network failure domain. A requires cross-rack host cabling and is not the standard ToR redundancy pattern; rack resilience is achieved by distributing cluster hosts across racks while providing redundant ToRs within each rack.
Study Guide References/Topics: VCF Physical Network Design; NIC-Level Redundancy; NIC Teaming; Dual ToR Design; Rack Fault Domains; vSphere HA; Elimination of Single Points of Failure.
by Les at Nov 08, 2026, 11:55 PM
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