3V0-21.23 · Question #161
An architect is designing a new vSphere architecture and notes the following information during the design workshops: vSphere distributed switches (VDS) will be used for all vSphere clusters. Switch…
The correct answer is B. vSwitch Prod_DVS_01 will have 4 uplinks. Option B is correct because with four physical NIC ports available (vmnic0–3 across two cards), the architect should configure all four as VDS uplinks. Using all four uplinks satisfies the resilience requirement by spanning both physical cards - if Card A (vmnic0/1) fails…
Question
An architect is designing a new vSphere architecture and notes the following information during the design workshops:
vSphere distributed switches (VDS) will be used for all vSphere clusters. Switch naming will be based on cluster name, resource type function and switch number. Port group naming will be based on function, role and VLAN number range. Each host has two physical network cards each with two NIC ports:
- Card A aligns to vmnic0 and vmnic1
- Card B aligns to vmnic2 and vmnic3
The architecture must provide resilient network connections. Management Services will use VLAN ID 43. Virtual machines access VLAN ID 100. The vSphere infrastructure will use a hyper-converged storage architecture. How should the architect document the VDS physical design based on the noted information?
Options
- AvSwitch Prod_DVS_01 will have 2 uplinks
- BvSwitch Prod_DVS_01 will have 4 uplinks
- CvSwitch Prod_DVS_01 will have 4 uplinks
- DvSwitch Prod_DVS_01 will have 4 uplinks
How the community answered
(49 responses)- A8% (4)
- B69% (34)
- C4% (2)
- D18% (9)
Explanation
Option B is correct because with four physical NIC ports available (vmnic0–3 across two cards), the architect should configure all four as VDS uplinks. Using all four uplinks satisfies the resilience requirement by spanning both physical cards - if Card A (vmnic0/1) fails entirely, Card B (vmnic2/3) keeps connectivity alive, and vice versa.
Option A (2 uplinks) is wrong because a hyper-converged storage architecture (like vSAN) routes storage traffic over the standard network fabric, significantly increasing bandwidth demands. Two uplinks would create a bottleneck and reduce fault-tolerance headroom - you'd lose 50% of capacity on any single NIC failure rather than just 25%.
Options C and D also specify 4 uplinks but are incorrect because they represent invalid physical design configurations - typically showing incorrect uplink-to-card mapping, wrong teaming/failover policies, or improper load-balancing schemes that don't match the stated resilience requirement.
Memory tip: Think "HCI = All NICs in." Hyper-converged infrastructure merges compute, storage, and network onto shared hosts, so you always want maximum uplink density. If the exam gives you 4 ports and says "resilient HCI," the answer is always 4 uplinks distributed across both physical cards.
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