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VMware 3V0-42.23 Exam Syllabus Topics:
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VMware NSX 4.x Advanced Design Sample Questions (Q90-Q95):
NEW QUESTION # 90
A Network Solutions Architect is tasked with designing an optimized and high-performing NSX solution, keeping in mind the need for DPU-based acceleration. The architect needs to consider the use of Geneve Offload, Receive Side Scaling (RSS), Geneve Rx Filters, SSL Offload, and the effects of Multi- TEP, MTU size, and NIC speed on throughput. Furthermore, the architect also needs to consider the key performance factors for compute nodes and NSX Edge nodes.
The company CTO is worried about potential network bottlenecks as they continue to grow.
Which strategy should the architect recommend to address the CTO's concern?
Answer: B
Explanation:
* Increase MTU & Multi-TEP (Correct Answer - B):
* Increasing theMTU size (Jumbo Frames 1600-9000 bytes)helpsreduce fragmentationand improve Geneve performance.
* Multi-TEP (Tunnel Endpoints)enablesload balancing of overlay trafficacross multipleNICs, enhancing throughput.
* High-speed NICs (25G/40G/100G)improvedata plane performanceby reducingpacket processing overhead.
* Incorrect Options:
* (A - MTU Increase But Single TEP):
* Asingle TEPcreates a bottleneck as all overlay traffic isrouted through one NIC.
* (C - Decrease MTU & Use Single TEP):
* Reducing MTUincreases fragmentation, negatively impacting performance.
* (D - Keep MTU & Reduce NIC Speed):
* Slower NIC speedsincrease latency and reduce throughput, which contradicts the goal.
VMware NSX 4.x Reference:
* NSX-T Performance Optimization Guide
* VMware NSX Best Practices for DPU-Based Acceleration
NEW QUESTION # 91
What do leading practices for NSX Edge cluster design aim to ensure?
Answer: C
NEW QUESTION # 92
A Solutions Architect is helping an organization with the Conceptual Design of an NSX solution.
This information was gathered by the architect during the Discover Task of the Engagement Lifecycle:
* There are applications which use IPv6 addressing.
* Network administrators are not familiar with NSX solutions.
* Hosts can only be configured with two physical NICs.
* There is an existing management cluster to deploy the NSX components.
* Dynamic routing should be configured between the physical and virtual network.
* There is a storage array available to deploy NSX components.
Which constraint was documented by the architect?
Answer: D
Explanation:
1. Understanding Constraints in NSX Design
* A constraint is a limiting factor in a design that cannot be changed and must be worked around.
* In this case, theorganization's hosts are restricted to only two physical NICs, which can impact:
* Overlay network design (Geneve traffic, TEPs allocation).
* Traffic segmentation between management, storage, and data plane traffic.
* High availability and redundancy configurations for NSX Edge and ESXi hosts.
2. Why "Hosts can only be configured with two physical NICs" is the Correct Answer (C)
* NIC limitations can impact NSX-T Transport Node Profiles, asbest practices recommend at least
4 NICs(2 for management and vSAN, 2 for overlay transport).
* With only two NICs, careful consideration must be given to:
* Uplink Profile design (Active/Active vs. Active/Standby).
* Physical redundancy using NIC teaming and VLAN segmentation.
* Possible impact on performance if multiple types of traffic share the same NIC.
3. Why Other Options are Incorrect
* (A - Dynamic Routing as a Constraint):
* Dynamic routing (e.g., BGP, OSPF) is a design choice, not a hard constraint.
* (B - CPU & Memory Availability in Management Cluster):
* Having resources available is an enabler, not a constraint.
* (D - IPv6 Applications):
* IPv6 support is an NSX capability, not a constraint.
4. NSX Design Considerations for NIC-Constrained Hosts
* Leverage VLAN-backed segments for underlay traffic.
* Configure NIC teaming to optimize failover strategies.
* Utilize Multi-TEP configurations to balance overlay traffic effectively.
* Ensure NSX Edge nodes use DPDK-enabled NICs for high performance.
VMware NSX 4.x Reference:
* NSX-T Transport Node Profile Design Guide
* VMware Best Practices for NIC Teaming and Traffic Segmentation
* NSX-T BGP and OSPF Routing Design Considerations
NEW QUESTION # 93
Enhanced Datapath modes are designed for? (Choose two)
Answer: A,D
NEW QUESTION # 94
A company is planning to deploy NSX to provide a multi-tenant environment for their customers. The solutions architect is responsible for designing the network services to ensure that each tenant's traffic is isolated and secure.
Which of the following NSX features should the solutions architect use to achieve this goal?
Answer: A
Explanation:
* Distributed Firewall for Multi-Tenant Security (Correct Answer - D):
* NSX Distributed Firewall (DFW)enablestenant isolationat thevirtual machinelevel.
* It enforcessecurity policies directly on vNICs, ensuringEast-West traffic controlwithout needing hardware firewalls.
* This ensuresmulti-tenancy compliance, preventingcross-tenant communicationunless explicitly allowed.
* Incorrect Options:
* (A - Load Balancing):
* NSX Load Balancerimprovesapplication availabilitybutdoes not provide traffic isolation.
* (B - VLAN):
* VLANs providebasic segmentationbutdo not offer granular controllikeDFW.
* (C - NAT):
* NAT providesIP address translationbutdoes not ensure tenant security.
VMware NSX 4.x Reference:
* NSX-T Data Center Multi-Tenancy Design Guide
* NSX-T Distributed Firewall Best Practices
NEW QUESTION # 95
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