An administrator is configuring resource pools for a vSphere 6.x cluster. The cluster has these characteristics:
1.
Five ESXi 6.x hosts
2.
Six cores per host
3.
70 virtual machines with 1 vCPU each
The administrator configures three resource pools and places the virtual machines into the pools, as follows:
1.
Production pool ?High Share value with 40 virtual machines
2.
Infrastructure pool ?Medium Share value with 20 virtual machines
3.
Development pool ?Low Share value with 10 virtual machines
Given this configuration, what is the expected performance for each group of virtual machines during contention?
A. Virtual machines in the Production pool will perform two times as well as those in the Infrastructure pool.
B. Virtual machines in the infrastructure pool will perform four times as well as those in the Development pool.
C. Virtual machines in all resource pools will perform equally.
D. Virtual machines in the Development pool will perform two times as well as those in the Infrastructure pool.
Correct Answer: C
Question 52:
Refer to the Exhibit.
What will be the result of selecting the highlighted device?
A. Datastore will grow up to 200.01GB using the remaining free space on the device.
B. Datastore will add 200.01GB by adding the device as a second extent.
C. The device size can be expanded to be larger than 200.01 GB in size.
D. The device is not suitable for this operation.
Correct Answer: A
When you need to create new virtual machines on a datastore, or when the virtual machines running on this datastore require more space, you can dynamically increase the capacity of a VMFS datastore.(200 GB) Use one of the following methods: -Add a new extent. An extent is a partition on a storage device, or LUN. You can add up to 32 new extents of the same storage type to an existing VMFS datastore. The spanned VMFS datastore can use any of all its extents at any time. It does not need to fill up a particular extent before using the next one. -Grow an extent in an existing VMFS datastore, so that it fills the available adjacent capacity. Only extents with free space immediately after them are expandable. https://kb.vmware.com/kb/1017662
Question 53:
A device's vStorage API for Array Integration (VAAI) support status command line output shows:
What is the corresponding VAAI support status in the vSphere Web Client?
A. Unknown
B. Supported
C. Not supported
D. Unsupported
Correct Answer: A
: If you go to Host > Configuration > Storage, you can see the Hardware Acceleration Status in the panel on the right side.
For each storage device and datastore, the vSphere Client displays the hardware acceleration support status in the Hardware Acceleration column of the Devices view and the Datastores view.
The status values are Unknown, Supported, and Not Supported. The initial value is Unknown. The status changes to Supportedafter the host successfully performs the offload basic operations. If the offload operation fails, the status changes to Not Supported.
To determine if your storage device supports VAAI, test the Full Copy VAAI primitive:
1.
Using the vSphere Client, browse the datastore and locate a virtual disk (VMDK) of at least 4 MB that is
not in use.
2.
Copy the virtual disk to a new file.
3.
Check the Hardware Acceleration status to verify that it changes from Unknown to either Supported or
Not Supported.
Note: VAAI primitives can also be tested by creating a virtual machine with at least one new virtual disk, or
cloning a virtual machine.
Can I check the VAAI status from the command line?
Which two statements are true regarding Storage Multipathing Plug-Ins? (Choose two.)
A. The default Path Selection Policy is VMW_PSP_MRU for iSCSI or FC devices.
B. The default Path Selection Policy is VMW_PSP_FIXED for iSCSI or FC devices.
C. VMW_PSP_MRU is typically selected for ALUA arrays by default.
D. VMW_PSP_FIXED is typically selected for ALUA arrays by default.
Correct Answer: BC
: By default, the VMware NMP supports the following PSPs:
VMW_PSP_MRU The host selects the path that it used most recently. When the path becomes unavailable, the host selects an alternative path. The host does not revert back to the original path when that path becomes available again. There is no preferred path setting with the MRU policy. MRU is the default policy for most active-passive storage devices. Displayed in the vSphere Client as the Most Recently Used (VMware) path selection policy. VMW_PSP_FIXED The host uses the designated preferred path, if it has been configured. Otherwise, it selects the first working path discovered at system boot time. If you want the host to use a particular preferred path, specify it manually. Fixed is the default policy for most active-active storage devices. Note If the host uses a default preferred path and the path's status turns to Dead, a new path is selected as preferred. However, if you explicitly designate the preferred path, it will remain preferred even when it becomes inaccessible.
Which statement is true for the Path Selection Plug-In VMW_PSP_MRU?
A. VMW_PSP_MRU is default for a majority of active-active and active-passive arrays.
B. VMW_PSP_MRU will remain on the selected path even if the state were to change.
C. VMW_PSP_MRU is recommended for Virtual SAN.
D. VMW_PSP_MRU will have no preferred path setting for the Plug-In.
Correct Answer: D
VMW_PSP_MRU The host selects the path that it used most recently. When the path becomes unavailable, the host selects an alternative path. The host does not revert back to the original path when that path becomes available again. There is no preferred path setting with the MRU policy. MRU is the default policy for most active-passive storage devices.
An administrator created a six node Virtual SAN cluster, created a fault domain, and moved three of the six nodes into that domain.
A node that is a member of the fault domain fails.
What is the expected result?
A. The remaining two fault domain members are treated as failed.
B. The remaining two fault domain members stay protected by the domain.
C. One of the non-member nodes will be automatically added to the fault domain.
D. VMware High Availability will restart virtual machines on remaining nodes in the domain.
Correct Answer: A
Defines the number of host and device failures a virtual machine object can tolerate. For n failures tolerated, n+1 copies of the virtual machine object are created and 2*n+1 hosts contributing storage are required. When provisioning a virtual machine, if you do not choose a storage policy, Virtual SAN assigns this policy as the default virtual machine storage policy. Default value is 1. Maximum value is 3. If fault domains are configured, 2n+1 fault domains with hosts contributing capacity are required. A host, which is not part of any fault domain is considered as its own single host fault domain. Default value is 1. Maximum value is 3. NOTE If you do not want Virtual SAN to protect a single mirror copy of virtual machine objects, you can specify the Number of failures to tolerate=0. However, the host might experience unusual delays when entering maintenance mode. The delay occurs because Virtual SAN has to evacuate the object from the host for the maintenance operation to complete successfully. Setting the Number of failures to tolerate=0 means that your data is unprotected, and you might lose data when the Virtual SAN cluster encounters a device failure. NOTE When creating a new storage policy, if you do not specify any value for Number of failures to tolerate, by default, Virtual SAN creates a single mirror copy of the virtual machine objects and tolerates only one failure. However, in the event of a multiple component failures your data might be at risk. link: https://pubs.vmware.com/vsphere-60/topic/com.vmware.ICbase/PDF/virtual-san-60-administrationguide.pdf
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