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Certification 3V0-21.23 Exam - Hot 3V0-21.23 Spot Questions

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VMware 3V0-21.23 Exam Syllabus Topics:

Topic
Details

Topic 1

IT Architectures, Technologies, Standards: This section of the exam measures the skills of IT Architects and covers differentiating between business and technical requirements, as well as conceptual, logical, and physical design. A key skill measured is "Designing System Availability."

Topic 2

Plan and Design the VMware Solution: This part targets Solution Designers, evaluating their ability to gather business objectives, create conceptual models based on these objectives, develop logical designs, and translate them into physical designs that meet specific requirements like manageability or security.

Topic 3

VMware Products and Solutions: Targeting VMware Engineers, this section describes VMware Cloud Foundation architecture, its components like vSphere and NSX, benefits such as automation and scalability, and use cases like hybrid cloud environments. It assesses understanding of VMware Validated Solutions.

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VMware vSphere 8.x Advanced Design Sample Questions (Q30-Q35):

NEW QUESTION # 30
An architect is designing a new vSphere environment with the following resources:
- 600 vCPU
- 5,760 GB RAM
Average resource usage is:
- 60 vCPU
- 1,152 GB RAM
The design must meet the following requirements:
- The environment has the ability to burst by 25%.
- Each host can schedule 36 vCPUs and has 512 GB RAM.
- Management overhead is 20%.
What is the minimum number of hosts required to meet the design requirements?

A. Three
B. Four
C. Five
D. Two

Answer: B

Explanation:
Take for consideration "Management overhead is 20%."
CPU: (60+60*0,25+60*0,2)/36 = ~ 2,4 (round up to 3)
RAM: (1152+1152*0,25+1152*0,2)/512 = ~ 3,26 (round up to 4)

NEW QUESTION # 31
An architect is responsible for the lifecycle management design for a brownfield vSphere-based solution.
The following information has been provided during initial meetings around the new solution:
Existing heterogeneous server hardware will be used to provide the hosting platform.
The available hardware is:
-- 10 servers that contain 2 x 20-Core Intel Xeon processors and 512 GB RAM from Vendor A
-- 10 servers that contain 2 x 24-Core Intel Xeon processors and 768 GB RAM from Vendor A
-- 20 servers that contain 2 x 16-Core AMD EPYC processors and 512 GB RAM from Vendor B
-- 10 servers that contain 1 x 24-Core AMD EPYC processors and 256 GB RAM from Vendor C All of the hardware is currently listed on the VMware Hardware Compatibility List (HCL).
All existing server hardware has 36 months vendor support remaining.
The requirements from the customer are:
REQ001 - The solution must support the hosting of 5,000 workloads across two physical sites.
REQ002 - The solution should minimize the number of clusters.
REQ003 - The solution must ensure that there is no impact to service when completing upgrades.
Given the resource requirements needed for the solution, the architect has calculated that all of the existing servers will be required to provide sufficient resources for the new environment. The Intel-based servers will be deployed to the primary site and the AMD-based servers will be deployed to the secondary site.
Which four additional design decisions should the architect make to ensure all requirements can be met?
(Choose four.)

A. The solution will create an Intel-based 20-node vSphere cluster in the primary site and an AMD-based
30-node vSphere cluster in the secondary site.
B. The solution will ensure each vSphere cluster is configured with Distributed Power Management (DPM).
C. The solution will use VMware SDDC Manager to perform lifecycle management of the solution.
D. The solution will use vSphere Lifecycle Manager baselines to perform patching and upgrading of vSphere ESXi hosts in the secondary site.
E. The solution will use vSphere Lifecycle Manager images to update and upgrade vSphere ESXi hosts in the primary site.
F. The solution will ensure each vSphere cluster supports a minimum of N + 1 redundancy.
G. The solution will use vSphere Lifecycle Manager images to update and upgrade vSphere ESXi hosts in the secondary site.

Answer: C,E,F,G

Explanation:
The solution will use VMware SDDC Manager to perform lifecycle management of the solution.
VMware SDDC Manager provides centralized lifecycle management for a vSphere-based environment, especially in VMware Cloud Foundation. This is crucial for automating and streamlining updates, upgrades, and patches, ensuring that the solution remains operational during lifecycle events and that there is no service impact during these processes.
The solution will ensure each vSphere cluster supports a minimum of N + 1 redundancy.
Ensuring N + 1 redundancy within each cluster will provide high availability and fault tolerance. This means that each cluster will have enough capacity to continue operating even if one host fails, meeting the requirement to avoid service disruption during host failures or maintenance activities.
The solution will use vSphere Lifecycle Manager images to update and upgrade vSphere ESXi hosts in the secondary site.
vSphere Lifecycle Manager (vLCM) images allow for consistent and automated management of ESXi host configurations and upgrades. By using images, the architect ensures that all hosts in the secondary site are aligned with the required configuration for upgrades, thus simplifying the process and minimizing downtime during upgrades.
The solution will use vSphere Lifecycle Manager images to update and upgrade vSphere ESXi hosts in the primary site.
Just like for the secondary site, using vLCM images in the primary site ensures that the Intel-based servers are configured consistently and updated seamlessly. This approach minimizes service disruption and ensures smooth upgrades for all hosts in the primary site.

NEW QUESTION # 32
An architect is creating a network design for a new vSphere environment.
Based on customer requirements, the environment must support the following types of traffic:
- Management
- vMotion
- vSAN
- Fault Tolerance
- Virtual machine traffic, which cannot be impacted by other types of traffic Which design recommendation can the architect make for a resilient infrastructure with vSphere network service tiering?

A. Use two dedicated virtual switches with a single adapter each, dedicating one virtual switch for Management, vMotion, vSAN and Fault Tolerance traffic, and the second one for virtual machine traffic
B. Use a NIC teaming policy based on the physical NIC load
C. Use different logical networks to ensure traffic is isolated with separate VLANs
D. Use Network I/O Control and ensure appropriate share value is defined for different types of traffic giving priority to the virtual machines traffic

Answer: D

NEW QUESTION # 33
An architect is responsible for the design of a greenfield vSphere-based solution for hosting a new web-based application. The customer has provided the following high-level information:
The solution will host a highly transactional web application that is spread across multiple workloads within a vSphere cluster.
The workloads should be distributed evenly across the hosts to maximize the performance and availability of the web application.
The architect has made various design decisions, including:
The solution will deploy vSphere distributed switches for all virtual networking.
Which network load balancing method should the architect document in the physical design to meet the requirements?

A. Route Based on IP Hash
B. Route Based on Physical NIC Load
C. Route Based on Originating Virtual Port
D. Route Based on Source MAC Hash

Answer: B

Explanation:
Based on VMware vSphere 8.x Advanced documentation and the customer requirements, the architect is designing a greenfield vSphere-based solution for a highly transactional web application hosted across multiple workloads in a vSphere cluster. The workloads must be distributed evenly across hosts to maximize performance and availability, and the solution will use vSphere Distributed Switches (vDS) for virtual networking. The architect must select a network load balancing method for the physical design that aligns with these requirements.
Requirements Analysis:
* Highly transactional web application: The application requires high network performance and low latency, as transactional workloads are sensitive to network bottlenecks.
* Workloads spread across multiple workloads in a vSphere cluster: The application runs on multiple VMs, implying a need for balanced resource utilization across hosts.
* Workloads distributed evenly across hosts: This suggests the use of vSphere features like Distributed Resource Scheduler (DRS) for compute load balancing and a network load balancing method to ensure even distribution of network traffic across NICs.
* Maximize performance and availability: The network design must avoid bottlenecks, ensure redundancy, and dynamically adapt to traffic demands to maintain application performance and uptime.
* vSphere Distributed Switches: vDS provides advanced networking features like Network I/O Control (NIOC), Link Aggregation Control Protocol (LACP), and dynamic load balancing, which are critical for meeting performance and availability goals.
Evaluation of Network Load Balancing Methods:
The load balancing method determines how traffic from VMs is distributed across the physical NICs (uplinks) in a vDS. The options are:
* A. Route Based on IP Hash:
* Description: Distributes traffic based on a hash of the source and destination IP addresses, requiring Link Aggregation Control Protocol (LACP) or EtherChannel configuration on the physical switch.
* Why incorrect: While IP Hash can distribute traffic across NICs, it requires complex switch configuration and is less effective for dynamic load balancing in a highly transactional environment. It does not adapt to real-time NIC load, which could lead to uneven traffic distribution and potential bottlenecks, failing to maximize performance. It also increases complexity without clear benefits for this use case.
* B. Route Based on Physical NIC Load:
* Description: Also known as Load-Based Teaming (LBT), this method dynamically balances traffic across uplinks based on the actual load of each physical NIC, reassigning VM traffic if a NIC becomes congested (e.g., exceeds 75% utilization over a 30-second window).
* Why correct: LBT is ideal for a highly transactional web application, as it ensures even distribution of network traffic across NICs, maximizing performance by preventing any single NIC from becoming a bottleneck. It supports availability by leveraging multiple NICs for redundancy and dynamically adapting to traffic patterns, aligning with the requirement to distribute workloads evenly. LBT works seamlessly with vDS and does not require complex switch configurations, making it suitable for a greenfield design. Combined with features like NIOC, it ensures optimal network resource utilization for the application.: VMware vSphere 8 networking documentation recommends Route Based on Physical NIC Load for dynamic load balancing in performance-sensitive environments.
C: Route Based on Originating Virtual Port:
Description: Assigns each VM's traffic to a physical NIC based on the VM's virtual port ID on the vDS, distributing traffic statically across uplinks.
Why incorrect: This method is simple and requires no switch configuration, but it does not account for actual NIC load, potentially leading to uneven traffic distribution if some VMs (e.g., transactional workloads) generate more traffic than others. It fails to maximize performance for a highly transactional application, as it cannot dynamically adapt to traffic spikes or ensure even NIC utilization.
D: Route Based on Source MAC Hash:
Description: Distributes traffic based on a hash of the VM's source MAC address, statically assigning traffic to uplinks.
Why incorrect: Similar to Originating Virtual Port, this method is static and does not consider real-time NIC load, risking uneven traffic distribution and potential bottlenecks. It is less effective for a highly transactional application where dynamic load balancing is needed to ensure performance and availability.
Why B is the Best Choice:
Performance optimization: Route Based on Physical NIC Load dynamically balances traffic based on NIC utilization, ensuring no single NIC is overwhelmed, which is critical for a highly transactional web application with variable traffic patterns.
Even distribution: By monitoring and redistributing traffic, LBT aligns with the requirement to distribute workloads evenly across hosts, complementing DRS for compute resources with balanced network utilization.
Availability: LBT leverages multiple NICs for redundancy, ensuring traffic failover if a NIC fails, supporting the high availability needs of the application.
vDS compatibility: LBT is fully supported on vDS and integrates with features like NIOC to prioritize application traffic, enhancing performance and resilience.
Simplicity: Unlike IP Hash, LBT requires no complex switch configuration, making it ideal for a greenfield design.
Example Configuration:
vDS Setup: Configure a vDS with multiple uplink port groups for management, vMotion, and workload traffic (web application VMs).
Load Balancing: Set Route Based on Physical NIC Load for the workload port group to dynamically balance the application's transactional traffic across available NICs (e.g., 2-4 x 10 GbE NICs per host).
NIOC: Use Network I/O Control to prioritize web application traffic over other traffic types (e.g., vMotion) during contention.
Redundancy: Ensure at least two NICs per port group for failover, aligning with availability requirements.

NEW QUESTION # 34
A customer provides the following list of requirements for their vSphere platform:
- REQ01 The solution should utilize dual network connections to eliminate single points of failure.
- REQ02 The solution should allow logs to be retained for a period of 30 days.
- REQ03 All user access to the platform should be recorded for audit purposes.
- REQ04 The solution should allow the management of multiple ESXi hosts.
- REQ05 The solution should allow users to view the remote console of virtual machines.
Which two of the listed requirements would be classified as non-functional requirements- (Choose two.)

A. The solution should allow the management of multiple ESXi hosts
B. The solution should allow users to view the remote console of virtual machines
C. The solution should allow logs to be retained for a period of 30 days
D. All user access to the platform should be recorded for audit purposes
E. The solution should utilize dual network connections to eliminate single points of failure

Answer: C,E

Explanation:
A >> How the system should behave
B >> What functionality should be delivered
C >> What functionality should be delivered
D >> What functionality should be delivered
E >> How the system should behave

NEW QUESTION # 35
......

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