VMware 3V0-21.21 Exam Questions Instant Access

Question 1

An architect is designing a new greenfield environment that will install ESXi on local disks. There is a requirement to streamline initial and future installations of ESXi hosts.

Which configuration option should the architect recommend for installing ESXi hosts to meet these requirements?

AInstallation with kick start script

BAuto Deploy with stateless caching mode

CManual installation using boot from SAN

DAuto Deploy with stateful install mode

Answer : D

Stateful Install: When a host is booted for the first time, the host profile configuration states Auto Deploy is to install ESXi on local host storage. All consecutive host boots, only the local storage is used until the image profile configuration is changed. Stateless: Auto Deploy is used to install ESXi in memory on the target host. The state information of the ESXi host is managed by Auto Deploy. No local storage is required.

Question 2

A customer defines a requirement to minimize the vMotion migration time during a maintenance period. The servers being used are equipped with eight 1 GbE network adapters.

Per the defined logical network configuration, there are two network adapters each used for:

Management traffic

vMotion traffic

iSCSI traffic

Virtual machine traffic

Which design decision should the architect make to meet the customer requirement?

AUse Network I/O Control to define a reservation for vMotion traffic.

BImplement Multi-NIC vMotion by adding additional vMotion VMkernels.

CConfigure a dedicated TCP/IP stack for vMotion traffic.

DCombine vMotion and Management traffic to make use of four adapters.

Answer : B

https://kb.vmware.com/s/article/2007467

https://communities.vmware.com/t5/VMware-vSphere-Discussions/vmotion-load-balanced-across-multiple-uplinks-on-distributed/td-p/491336

https://www.virtuallyboring.com/multi-nic-vmotion/

We maintain the 2 x 1 GbE network adapters for vMotion and then configure multiple VMkernel interfaces using the same NIC and network. Each time you add a VMkernel adapter and enable it for vMotion, you create a new stream. With more streams, there is greater bandwidth utilization.

https://kb.vmware.com/s/article/2007467

https://communities.vmware.com/t5/VMware-vSphere-Discussions/vmotion-load-balanced-across-multiple-uplinks-on-distributed/td-p/491336

https://www.virtuallyboring.com/multi-nic-vmotion/

Even though 2 x network adapters are dedicated to vMotion, only 1 of the uplinks will be used during a vMotion activity if only one vMotion vmkernel is configured. Adding an additional vmkernel will allow both to be used.

Per the VMware KB above 'After making these configuration changes, when you initiate a vMotion, multiple NIC ports are used. Even when performing a vMotion on just one virtual machine, both links are used.'

Also the question states 'Per the defined logical network configuration, there are two network adapters each' which suggests that changing this to combine vMotion/Mgmt traffic may not be possible based on the customers requirements (as the logical network architecture is already defined by them)

Question 3

Following a recent acquisition, the architect learns that both companies use vSphere on-premise and will need to combine the data centers into one. The acquired company's licenses will not be renewed for cost-savings related to the acquisition. All consumed vSphere licenses must have active support to support line-of-business operations. The merged environment must maintain 25% spare capacity. The architect has a small budget remaining unallocated for hardware.

The architect has calculated that the current vSphere environment can absorb the acquired company's virtual machines but the cluster will run at 90% memory utilization and at 50% CPU utilization.

Which design decision can the architect make to incorporate the new company's virtual machines into the combined vSphere environment?

AMigrate the acquired company's virtual machines into the vSphere environment as it will currently fit.

BUse the current budget to add memory to the cluster to increase each ESXi host's capacity and add the new virtual machines.

CPurchase extra hosts to add to the cluster in anticipation of adding the acquired company's virtual machines.

DPurchase new licenses for some of the acquired company's ESXi hosts and add them to the cluster to hold the acquired company's virtual machines.

Answer : B

Question 4

An architect is considering placement of virtual machines within an existing VMware software-defined data center (SDDC).

During the discovery phase, the following information is documented:

Which two recommendations should the architect make for placement of the virtual machines to meet resource profile requirements? (Choose two.)

AAll virtual machines matching Virtual Machine Resource Profile 2 should be placed on Cluster One.

BAll virtual machines matching Virtual Machine Resource Profile 1 should be placed on Cluster One.

CAll virtual machines matching Virtual Machine Resource Profile 2 should be placed on Cluster Two.

DAll virtual machines matching Virtual Machine Resource Profile 1 should be placed on Cluster Two.

EAll virtual machines matching Virtual Machine Resource Profile 2 should be placed on Cluster Three.

Answer : A, D

https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-FEAC3A43-C57E-49A2-8303-B06DBC9054C5.html

Profile 2 to Cluster 1

Fully Automated DRS allows Automated Initial VM Placement

TPS is enabled to support Memory Sharing requirement (can be used)

Profile 1 to Cluster 2

Partially Automated DRS still allows Automated Initial VM placement.

TPS is disabled to support Memory Sharing requirement (cannot be used)

Question 5

An architect decides to separate virtual desktops and application servers into separate vSphere clusters to meet security and management requirements.

What are two implications of this design decision? (Choose two.)

AThere will be an increase in management overhead.

BIdentical hardware must be procured for all hosts.

CThere will be a reduction in performance.

DThe patching cycles will affect both clusters at the same time.

EThere will be additional licensing and cost requirements for both clusters.

Answer : A, C

Question 6

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?

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

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

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

DThe development cluster has more available RAM per host

Answer : A

https://blogs.vmware.com/performance/2017/03/virtual-machine-vcpu-and-vnuma-rightsizing-rules-of-thumb.html

Question 7

An architect is preparing a design for a customer. Based on requirements, the architect recommends an HCI- based infrastructure with all-flash architecture. During the assessment, it is confirmed that the network throughput generated by virtual machines does not exceed 150 Mb/s.

What is the minimum number and type of network adapters in each server that the architect can recommend to ensure requirements are met and there is no single point of failure?

ATwo 1 GbE network adapters per server

BFour 1 GbE network adapters per server

CFour 10 GbE network adapters per server

DTwo 10 GbE network adapters per server

Answer : D

HCI-based infrastructure with all-flash architecture

minimum number and type of network adapters so ensure requirements are met and there is no single point of failure

Networking Requirements for vSAN

Dedicated 1 Gbps for hybrid configurations

Dedicated or shared 10 Gbps for all-flash configurations

VMware Advanced Design VMware vSphere 7.x 3V0-21.21 Exam Questions