An administrator is deploying ESXi 6.x hosts using Auto Deploy and wants the image profile to be available, even after closing and opening a new PowerCLI window.
Which command can be used to ensure that image profiles are preserved across PowerCLI sessions?
A. Set-EsxImageProfile
B. Export-EsxImageProfile
C. Save-EsxImageProfile
D. Preserve-EsxImageProfile
Correct Answer: B
Explanation: Detailed Description
Exports an Image Profile object as either an ESXi ISO image that can be booted up and used as an ESXi
installer, or an offline depot ZIP file that contains metadata plus the VIB packages. In both cases,
downloads the VIB binaries and validates the VIB signatures.
You can perform the following tasks with the offline depot ZIP file:
*Import the ZIP into VMware Update Manager for patch remediation
*Download the ZIP to an ESXi host and used with esxcli for installation
*Re-import the ZIP into ImageBuilder itself using Add-EsxSoftwareDepot
You can specify either -ExportToIso or -ExportToBundle but not both.
NAME
ImageProfile
TYPE
ImageProfile
DESCRIPTION
(pipeline input, prompt) Specifies the image profile to export.
Takes one of the following forms:
*Name of an image profile, as displayed in the Name column of Get-EsxImageProfile, or the Name
property of any ImageProfile object *ImageProfile object
An administrator has decided to create 10 ESXi 6.x hosts via Auto Deploy for a new Test/Dev cluster. The hosts are configured to obtain their networking configuration via DHCP.
Which Direct Console User Interface option should the administrator use to renew the DHCP lease for the hosts?
A. Restore Network Settings
B. Test Management Network
C. Restart Management Network
D. Network Restore Options
Correct Answer: C
Explanation: Restart the Management Network Restarting the management network interface might be required to restore networking or to renew a DHCP lease. Restarting the management network will result in a brief network outage that might temporarily affect running virtual machines. If a renewed DHCP lease results in a new network identity (IP address or host name), remote management software will be disconnected. Procedure
1.
From the direct console, select Restart Management Network and press Enter.
Which two identification sources can a vSphere Auto Deploy rule use to identify target hosts? (Choose two.)
A. Processor Serial Number
B. Security Identifier
C. SMBIOS information
D. BIOS UUID
Correct Answer: CD
Explanation: You specify the behavior of the Auto Deploy server by using a set of rules written in Power
CLI. The Auto Deploy rule engine checks the rule set for matching host patterns to decide which items (image profile, host profile, or vCenter Server location) to provision each host with. The rule engine maps software and configuration settings to hosts based on the attributes of the host. For example, you can deploy image profiles or host profiles to two clusters of hosts by writing two rules, each matching on the network address of one cluster The rule engine includes rules and rule sets.
Rules Rules can assign image profiles and host profiles to a set of hosts, or specify the location (folder or cluster) of a host on the target vCenter Server system. A rule can identify target hosts by boot MAC address, SMBIOS information, BIOS UUID, Vendor, Model, or fixed DHCP IP address. In most cases, rules apply to multiple hosts. You create rules by using Auto Deploy PowerCLI cmdlets. After you create a rule, you must add it to a rule set. Only two rule sets, the active rule set and the working rule set, are supported. A rule can belong to both sets, the default, or only to the working rule set. After you add a rule to a rule set, you can no longer change the rule. Instead, you copy the rule and replace either items or patterns. By default, Auto Deploy uses the name of the rule for the copy and hides the original rule.
An administrator receives vRealize Operations alerts for the Health of the virtual machine PVMAPP_0 as shown in Exhibit 1:
The administrator clicks on the Analysis pane, as shown in Exhibit 2:
Based on the exhibits, what action would correctly address the performance problems observed?
A. Increase the number of vCPUs for PVMAPP_0.
B. Increase the allocation of memory for PVMAPP_0.
C. Increase the Memory limit for PVMAPP_0.
D. Increase the reservation in MHz for vCPUs for PVMAPP_0.
Correct Answer: A
The default Hardware Version of the vRealize Operations Manager virtual machine is 7, limiting the maximum vCPUs selection to 8. You can upgrade the Hardware Version of the Analytics machine to increase the vCPU limit. Theoretically, the performance of PVM should be similar or better than HVM. But, this trend tends to break when the vCPU count increases from 20 vCPUS. This problem is counter intuitive and is only observed in case of vCPUs being greater than 20 physical cores. We classify this problem as sleepy lock anomaly, which occurs due to the usage of paravirtual interface in the ticket spinlock implementation that has been introduced to solve the Lock Holder Preemption problem without the architectural support (i.e. Pause Loop Exiting). Take steps to analyze the scalability behavior of VMs with high core count (till 80 core). Our preliminary study suggests that besides cache contention bottleneck, the usage of ticket spinlock is another culprit for the degradation. We will take a step further and will try to analyze the scalability characteristics of these monster VMs by running other benchsuites from Mosbench. https://www.vmware.com/support/pubs/vrealize-automation-pubs.htm
Question 185:
Refer to the Exhibit.
An administrator is reviewing a vSphere Distributed Resource Scheduler (DRS) enabled Cluster and observes unexpected behavior as shown in the Exhibit.
What are three potential causes of the cluster imbalance? (Choose three.)
A. A local device is mounted to one or more virtual machines.
B. DRS rules prevent virtual machines from being moved.
C. vMotion is not configured and enabled.
D. There are insufficient cluster resources to perform the migration.
E. DRS has been configured for a conservative migration threshold.
Correct Answer: ABC
A-) A device is mounted to one or more virtual machines preventing DRS from moving the virtual machine
in order to balance the load.
B-) The migration threshold is too high.
A higher threshold makes the cluster a more likely candidate for load imbalance.
VM/VM or VM/Host DRS rules prevent virtual machines from being moved.
C-) It would be more detrimental for the virtual machine's performance to move it than for it to run where it
is currently located. This may occur when loads are unstable or the migration cost is high compared to the
benefit gained from moving the virtual machine.
Observe that vMotion is not enabled or set up for the hosts in the cluster, DRS does not move any virtual
machines from a host. ... from this host would violate a VM/VM DRSrule or VM/Host DRS rule. https://
pubs.vmware.com/
Question 186:
Which two scenarios would cause a Fault Tolerance-enabled virtual machine to fail to power the Secondary virtual machine? (Choose two.)
A. The host has entered a Network Partitioned state.
B. vSphere High Availability (HA) is disabled on the host cluster.
C. Enhanced vMotion Compatibility (EVC) is enabled on the host cluster.
D. vSphere Distributed Power Management (DPM) is enabled on the host cluster.
Correct Answer: AB
A-) This issue occurs when the SSL certificate thumbprint presented to the master host is not what the master host is expecting. This is indicated by the thumbprint mismatch error in the fdm.log file of the master host https://kb.vmware.com/ selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=2012649 In general terms, a second virtual machine is created to work in tandem with the virtual machine on which you have enabled Fault Tolerance. This virtual machine resides on a different host in the cluster and runs in virtual lockstep with the primary virtual machine. When a failure is detected, the second virtual machine takes the place of the first one with the least possible interruption of service. More specific information about how this is achieved can be found in the Protecting Mission-Critical Workloads with VMware Fault Tolerance whitepaper. B-) You may need to complete this process for multiple clusters. VMware HA can be disabled only if there are no virtual machines with VMware Fault Tolerance (FT) enabled. If there are virtual machines with VMware FT enabled in the cluster you are disabling, turn off VMware FT before disabling VMware HA. The process of turning off VMware FT is described in Disabling or Turning Off VMware FT (1008026) .
Note: Virtual Machine Monitoring will also be disabled when HA is disabled.
Question 187:
What are two likely causes for a DRS cluster to become unbalanced? (Choose two.)
A. Migration threshold is too low.
B. Affinity rules are preventing virtual machines from being moved.
C. A device is mounted to a virtual machine preventing vMotion.
D. Migration cost is too low.
Correct Answer: BC
Load Imbalance on Cluster
A cluster has a load imbalance of resources.
Problem
A cluster might become unbalanced because of uneven resource demands from virtual machines and
unequal capacities of hosts.
Cause
The following are possible reasons why the cluster has a load imbalance:
The migration threshold is too high.
A higher threshold makes the cluster a more likely candidate for load imbalance.
1.
VM/VM or VM/Host DRS rules prevent virtual machines from being moved.
2.
DRS is disabled for one or more virtual machines.
3.
A device is mounted to one or more virtual machines preventing DRS from moving the virtual machine in order to balance the load.
4.
Virtual machines are not compatible with the hosts to which DRS would move them. That is, at least one of the hosts in the cluster is incompatible for the virtual machines that would be migrated. For example, if host A's CPU is not vMotion-compatible with host B's CPU, then host A becomes incompatible for powered-on virtual machines running on host B.
5.
It would be more detrimental for the virtual machine's performance to move it than for it to run where it is currently located. This may occur when loads are unstable or the migration cost is high compared to the benefit gained from moving the virtual machine.
6.
vMotion is not enabled or set up for the hosts in the cluster.
When attempting to place a datastore in Maintenance Mode, the task remains at 1%.
What are two potential causes for this? (Choose two.)
A. Storage DRS is disabled on one or more virtual machine(s) disk(s).
B. Storage DRS rules prevent migration recommendations for the disk.
C. Storage DRS datastores have insufficient space to accommodate failover.
D. Storage DRS provisioning network has been limited with I/O control policies.
Correct Answer: AB
Datastore Cannot Enter Maintenance Mode You place a datastore in maintenance mode when you must take it out of usage to service it. A datastore enters or leaves maintenance mode only as a result of a user request. Problem A datastore in a datastore cluster cannot enter maintenance mode. The Entering Maintenance Mode status remains at 1%. Cause One or more disks on the datastore cannot be migrated with Storage vMotion. This condition can occur in the following instances.
1.
Storage DRS is disabled on the disk.
2.
Storage DRS rules prevent Storage DRS from making migration recommendations for the disk. Solution
1.
If Storage DRS is disabled, enable it or determine why it is disabled. See Storage DRS is Disabled on a Virtual Disk for reasons why Storage DRS might be disabled.
2.
If Storage DRS rules are preventing Storage DRS from making migration recommendations, you can
remove or disable particular rules.
a In the vSphere Client inventory, right-click the datastore cluster and select Edit Settings.
b Select Rules and click the rule.
c Click Remove.
d Click OK.
Alternatively, if Storage DRS rules are preventing Storage DRS from making migration recommendations,
you can set the Storage DRS advanced option IgnoreAffinityRulesForMaintenance to 1.
a In the vSphere Client inventory, right-click the datastore cluster and select Edit Settings.
b Select SDRS Automation and click Advanced Options.
c Enter 1 in the Value column for IgnoreAffinityRulesForMaintenance.
An administrator is attempting to enable Fault Tolerance on a virtual machine with 4 vCPUs and observes the following in the vSphere Web Client:
Fault Tolerance has not been licensed on host .
What is the minimum licensed edition that supports this configuration?
A. Enterprise
B. Enterprise Plus
C. Standard
D. Essentials Plus
Correct Answer: B
Licensing The number of vCPUs supported by a single fault tolerant VM is limited by the level of licensing that you have purchased for vSphere. Fault Tolerance is supported as follows:
1.
vSphere Standard and Enterprise. Allows up to 2 vCPUs
An administrator is attempting to enable Legacy Fault Tolerance (FT) on a virtual machine and observes the following in the vSphere Web Client:
Fault Tolerance has not been licensed on host .
What is the minimum licensed edition that supports this configuration?
A. Standard
B. Enterprise
C. Enterprise Plus
D. Essentials Plus
Correct Answer: A
Licensing The number of vCPUs supported by a single fault tolerant VM is limited by the level of licensing that you have purchased for vSphere. Fault Tolerance is supported as follows:
1.
vSphere Standard and Enterprise. Allows up to 2 vCPUs
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