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VMware 3V0-21.21 Exam With Confidence Using Practice Dumps

Exam Code:
3V0-21.21
Exam Name:
Advanced Design VMware vSphere 7.x
Certification:
VCAP-DCV Design 2021
Vendor:
VMware
Questions:
88
Last Updated:
Apr 19, 2025
Exam Status:
Stable
VMware 3V0-21.21

3V0-21.21: VCAP-DCV Design 2021 Exam 2025 Study Guide Pdf and Test Engine

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Advanced Design VMware vSphere 7.x Questions and Answers

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Question 1

A new real-time financial service application is being developed by the engineering team at a financial firm and will be released as a public Software-as-a-Service (SaaS) offering. The solutions architect has designed and deployed a new vSphere environment and the supporting network infrastructure for hosting all public services. ESXi hosts are configured to use Precision Time Proalhazi@1tocol (PTP) and a local stratum-1 network time server.

Application provisioning and scaling will be managed by VMware vRealize Automation and can be run on Microsoft Windows or multiple distributions of Linux.

Which three recommendations should the architect include in the design to ensure that the service maintain timekeeping within an accuracy of one second? (Choose three.)

Options:

A.

Use Microsoft Windows Server as the guest operating system.

B.

Configure the chrony time-sync agent on each virtual machine guest operating system.

C.

Set the virtual hardware device to use Host System Time (NTP) for each virtual machine running the application.

D.

Add a precision clock virtual device to each virtual machine running the application.

E.

Use a Linux distribution as the guest operating system.

F.

Add a virtual watchdog timer (VWDT) device to each virtual machine running the application.

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Question 2

An architect is tasked with reviewing the design of a VMware software-defined data center (SDDC) for a software development company. The platform is used to developing applications and services. It is important that the customer be able to accurately benchmark performance of developed applications.

The platform has recently commissioned new hosts to update the development cluster.

The development cluster host configuration is:

  • 4 ESXi hosts with 2 sockets × 16 cores
  • 512 GB RAM divided evenly between sockets
  • There is no resource contention

The benchmarking cluster host configuration is:

  • 8 ESXi hosts with 2 sockets × 8 cores
  • 256 GB RAM divided evenly between sockets
  • There is no resource contention

The customer is developing an application that includes a database virtual machine. The application developer states that the database virtual machine performs as required only when allocated 8 vCPUs 256 GB RAM. The database virtual machine performance meets the required levels when run from the development cluster. Performance benchmarking for the database virtual machine yields highly variable results when run from the benchmarking cluster. The application cannot be released without reliable performance benchmarking data.

What is a possible reason for the difference in performance test results between the development and benchmarking clusters?

Options:

A.

The database tier breaches a single NUMA node boundary for the benchmarking cluster

B.

The database tier breaches a single NUMA node boundary for the development cluster

C.

The development cluster can support a lower %Ready time per vCPU

D.

The development cluster has more available RAM per host

Question 3

An architect is planning the physical server configuration for a vSAN-based infrastructure.

Which operations mode should a RAID controller support to minimize potential server downtime during physical disk failures?

Options:

A.

RAID controller with Passthru mode

B.

RAID controller with RAID 5 mode

C.

RAID controller with RAID 10 mode

D.

RAID controller with RAID 6 mode

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