VCP-DCV 5.5 Flashcards
What vCenter Server editions are available?
Essentials, Foundation, and Standard are the available vCenter Server editions.
What are the available vSphere Editions
Standard, Enterprise, and Enterprise Plus are the available vSphere editions
What is the vRam Entitlement for vSphere Standard
32 GB
What is the order of installation for vCenter Server Components?
(1) vCenter Single Sign-On
(2) vSphere Web Client
(3) vCenter Inventory Service
(4) vCenter Server
How many hosts and virtual machines can the vCenter Server bundled Microsoft SQL Server 2008 Express database support?
Up to 5 Hosts and 50 Virtual Machines
What kind of CPU is required for ESXi 5.5?
64-bit x86 CPU
What is the minimum number of CPU cores required for ESXi 5.5?
At least 2 CPU cores are required.
ESXi only supports which two CPU instruction sets?
LAHF and SAHF CPU instruction sets.
Which CPU Instruction bit is required to be set in the BIOS for ESXi 5.5?
The NX/XD bit must be enabled for the CPU in the BIOS.
What is the minimum amount of physical RAM required for ESXi 5.5?
4GB
How much RAM is required to take full advantage of ESXi features and run virtual machines in typical production environments?
8GB of RAM (at least)
What is required for ESXi 5.5 to support 64-bit virtual machines?
Hardware virtualization must be enabled on x64 CPUs (Intel VT-x or AMD RVI)
How many Gigabit or 10Gb Ethernet controllers are required for ESXi 5.5
One or more
What is required to connect a SATA CD-ROM device to a virtual machine on an ESXi 5.5 host?
A SATA CD-ROM must be set to IDE emulation mode
What type of local, internal drive does VMware not support for VMFS datastores that are shared across multiple ESXi hosts?
local, internal SATA drives are not supported for VMFS datastores that are shared across multiple ESXi hosts.
What scope are USB drives supported with ESXi 5.5?
USB Drives are supported for installing ESXi 5.5 only.
What is UEFI?
Unified Extensible Firmware Interface - used for booting from hard drive, CD-ROM, or USB media
Which boot mode is required for network boot for VMware Auto Deply?
Legacy BIOS is required for network boot (UEFI only supports HDD, CD-ROM, or USB media)
Is changing the host boot type between UEFI and Legacy BIOS supported
No. Changing the host boot type may cause the host to fail to boot with an error “not a vmware boot bank”
What is the boot device minimum size for ESXi 5.5?
1GB
What is the maximum physical CPU count for VMware vSphere 5.5?
320 physical CPU per ESXi host
This is double the VMware vSphere 5.1 supported physical CPU count of 160 physical CPU per ESXi host.
What is the maximum physical memory for VMware vSphere 5.5?
4TB per ESXi host
This is double the VMware vSphere 5.1 supported physical memory maximum of 2TB per ESXi host.
What is the maximum NUMA Nodes supported in VMware vSphere 5.5?
16 NUMA Nodes per ESXi host
This is double the VMware vSphere 5.1 maximum of 8 NUMA Nodes
What is the maximum supported vCPU quantity for VMware vSphere 5.5?
4096 vCPU per ESXi host
This is double the VMware vSphere 5.1 maximum of 2098 vCPU
What level of licensing is required for vMotion in vSphere 5.5?
vMotion requires a minimum of vSphere Essentials Plus license
What is vSphere High Availability (HA)?
HA restarts virtual machines on another host if a physical ESXi host becomes inoperable.
What is vSphere vMotion?
Move a live running virtual machine from one ESXi host to another without downtime.
What level of licensing is required for HA in vSphere 5.5?
HA requires a minimum of vSphere Essentials Plus license
What is vSphere Distributed Resource Service (DRS)?
vSphere DRS balances resource loads across vSphere hosts by moving virtual machines.
What level of licensing is required for vSphere App HA in vSphere 5.5?
vSphere App HA requires the Enterprise Plus license
What is the minimum license requirement for DRS in vSphere 5.5?
vSphere DRS requires the Enterprise license
What is the minimum license requirement for DPM in vSphere 5.5?
vSphere DPM requires the Enterprise license
What is the minimum license requirement for FT in vSphere 5.5?
vSphere FT requires the Standard license
What is the minimum license requirement for SDRS in vSphere 5.5?
vSphere SDRS requires the Enterprise Plus license
What is the minimum license requirement for Host Profiles in vSphere 5.5?
vSphere Host Profiles require the Enterprise Plus license
What is the minimum license requirement for Storage Profiles in vSphere 5.5?
vSphere Storage Profiles require the Enterprise Plus license
What is the minimum license requirement for Distributed Virtual Switches in vSphere 5.5?
vSphere Distributed Virtual Switches require the Enterprise Plus license
What is the minimum license requirement for Auto Deploy in vSphere 5.5?
vSphere Auto Deploy requires the Enterprise Plus license
What is the minimum license requirement for VSA in vSphere 5.5?
vSphere VSA requires the Essentials Plus license (a VSA license is included in the Essentials Plus and all advanced kits)
What is the maximum vCPU count for vSphere 5.5 virtual machines?
64 vCPU
What is the maximum vRAM quantity for vSphere 5.5 virtual machines?
1TB
What is the maximum virtual machine swap size for vSphere 5.5 virtual machines?
1TB
What is the maximum quantity of virtual SCSI adaptors configurable for vSphere 5.5 virtual machines?
4 SCSI adaptors
What is the maximum quantity of virtual SATA adaptors configurable for vSphere 5.5 virtual machines?
4 SATA adaptors
What is the maximum quantity of virtual SCSI targets per virtual SCSI adaptor for vSphere 5.5 virtual machines?
15 targets
What is the maximum quantity of virtual SCSI targets per VM for vSphere 5.5?
60 targets
What is the maximum quantity of virtual SATA targets per virtual SATA adaptor for vSphere 5.5 virtual machines?
30 targets
What is the maximum quantity of virtual SATA targets per VM for vSphere 5.5?
120 targets
What is the maximum quantity of virtual disks per VM for vSphere 5.5?
180 virtual disks
What is the maximum virtual disks size for vSphere 5.5 virtual machines?
62TB
What is the maximum quantity of virtual IDE controllers configurable for vSphere 5.5 virtual machines?
1 IDE controller
What is the maximum quantity of virtual IDE devices configurable for vSphere 5.5 virtual machines?
4 IDE devices
What is the maximum quantity of virtual floppy controllers configurable for vSphere 5.5 virtual machines?
1 floppy controller
What is the maximum quantity of virtual floppy devices configurable for vSphere 5.5 virtual machines?
2 floppy devices
What is the maximum quantity of virtual NICs configurable for vSphere 5.5 virtual machines?
10 virtual NICs
What is the maximum quantity of USB controllers configurable for vSphere 5.5 virtual machines?
1 USB controller
What is the maximum quantity of USB devices connected to vSphere 5.5 virtual machines?
20 USB devices
What is the maximum quantity of parallel ports configurable for vSphere 5.5 virtual machines?
3
What is the maximum quantity of xHCI USB controllers configurable for vSphere 5.5 virtual machines?
1 xHCI USB controller
What is the maximum quantity of serial ports configurable for vSphere 5.5 virtual machines?
4 serial ports
What is the maximum quantity of video memory configurable for vSphere 5.5 virtual machines?
512MB video memory
What is the maximum quantity concurrent remote console connections for vSphere 5.5 virtual machines?
40 concurrent connections
What license is required to use the Virtual Serial Port Concentrator?
Enterprise Plus License.
What feature level does vSphere Desktop provide?
vSphere Enterprise Plus features
What do core virtual machine files ending with the extension .vmx contain?
Virtual machine configuration data in text format.
What do core virtual machine files ending with the extension .vswp contain?
Virtual machine swap contents - sized to allocate RAM minus any memory reservation at boot time.
What do core virtual machine files ending with the extension .nvram contain?
Virtual machine BIOS
What do core virtual machine files ending with the extension .log contain?
Virtual machine log files
What do core virtual machine files ending with the extension .vmtx contain?
Virtual machine template files
What do core virtual machine files ending with the extension .rdm.vmdk contain?
Virtual machine raw device map file
What do core virtual machine files ending with the extension .vmdk contain?
Virtual machine disk descriptor file
What do core virtual machine files ending with the extension flat.vmdk contain?
Virtual machine disk data file
What do core virtual machine files ending with the extension .vmss contain?
Virtual machine suspend state file
What do core virtual machine files ending with the extension .vmsd contain?
Virtual machine snapshot data file
What do core virtual machine files ending with the extension .vmsn contain?
Virtual machine snapshot state file - contains the memory at the time the snapshot was taken
What do core virtual machine files ending with the extension delta.vmdk contain?
Virtual machine snapshot disk file
Can virtual disks be hot-extended beyond 2TB?
No, the virtual disk must be offline to extend beyond 2TB
Can you revert to snapshots after hot-extending a disk?
No, you cannot commit a snapshot or revert the base disk to it’s original size
Can you hot-add an IDE disk?
No
Is it possible to hot-remove CPU or Memory?
No
Can CPU or Memory be hot-added without VMware tools installed?
No
What features are lost when VMDirectPath I/O is enabled?
The vMotion, virtual device hot add, and virtual machine suspend/resume features are unavailable when VMDirectPath I/O is enabled.
What features are lost when SR-IOV is enabled?
vSphere vMotion, vSphere FT, and vSphere HA features are not available when SR-IOV is enabled.
Are AMD processors supported with SR-IOV?
No, AMD processors are not supported with SR-IOV.
Can a template be created from a running VM?
No, a VM must be offline to create a template.
Can a clone be created from a running virtual machine?
Yes - a running VM can be cloned.
Can a template be powered on?
No - a template must be deployed to a VM to be powered on.
Can you deploy a template on a VM in a different datacenter?
Yes - you can deploy a template to a VM in another datacenter.
Are snapshots supported with PCI vSphere DirectPath I/O devices?
No.
Do snapshots capture virtual machine settings?
Yes.
How many snapshots can be maintained in a process tree?
32 snapshots
How large can snapshot files grow?
Snapshots can grow to the same size as the original base disk file.
What is the maximum number of snapshots that VMware recommends maintaining?
No more than three snapshots.
How long does VMware recommend maintaining a single snapshot?
24-72 hours
What is Storage vMotion?
Storage vMotion migrates a virtual machine and it’s files from one datastore to another.
What is Enhanced vMotion?
Enhanced vMotion moves a virtual machine from one host to another while also moving to a different datastore. This works even if the hosts do not have shared storage in common.
What are the three requirements to use Enhanced vMotion between two hosts?
The hosts must be (1) connected to the same vCenter Server, (2) in the same datacenter, and (3) on the same layer 2 network.
Which vSphere client supports Enhanced vMotion?
Enhanced vMotion is only supported from the vSphere Web Client.
What is the earliest version of vSphere that supports Enhanced vMotion?
vSphere 5.1.
What mode must disks be in to support Enhanced vMotion?
Persistent mode
What are the major enhancements for Microsoft Cluster Services (MSCS) supporting in vSphere 5.5?
(1) Windows 2012 Clusters
(2) Round-Robin path policy for shared storage.
(3) FCOE and iSCSI support for shared storage
What is the minimum license required for vSphere Replicator?
Essentials Plus
What is the RPO range for vSphere Replicator?
vSphere Replicator has an RPO range from 24 hours to 15 minutes.
How many virtual machines are supported per vSphere Replication instance?
500 virtual machines are supported per vSphere Replication instance.
What is the major vSphere Replicator enhancement introduced in vSphere 5.5?
vSphere 5.5 vSphere Replicator allows the retention of historical point in time.
How many additional locations does the “add-on” VR appliance provide for vSphere Replicator?
The vSphere Replicator 5.5
“add-on” VR appliance allow configuration of replication for up to 10 other target locations.
How many locations can a virtual machine be replicated to using vSphere Replicator?
A virtual machine may only be replicated to single location using vSphere Replicator.
How are vSphere Replicator points-in-time retained at the recovery site?
vSphere Replicator points-in-time are retained as vmdk snapshot - very large snapshots may take a long time to commit or revert after failover.
Can vSphere Replicator virtual machines be moved across data stores?
Yes: vSphere 5.5 allows replicated virtual machines to be moved across data stores using Storage vMotion.
What are the hardware specifications for a vSphere Replication Appliance?
The hardware specifications for a vSphere Replication Appliance are:
(1) Dual Core CPU
(2) 10GB and 2GB HDD
(3) 4GB RAM
(4) 64-bit
What is the maximum number of replicated virtual machines for the vSphere Replicator license?
There is no license based limitation for virtual machine replication.
What are the vSphere Data Protection versions available?
(1) vSphere Data Protection Advanced
(2) VDP included with vSphere Essentials Plus and higher
How is vSphere Data Protection Advanced Licensed?
A separate license (per CPU) or included with vSphere with Operations Management Enterprise and Enterprise Plus Acceleration kits.
Approximately how many virtual machines are protected per VDP Advanced virtual appliance?
200 virtual machines
Approximately how many virtual machines are protected per VDP Advanced virtual appliance?
50 virtual machines
Which VDP version is required for Microsoft SQL Server and Exchange Licenses?
VDP Advanced is required for Microsoft SQL Server and Exchange Licenses.
What is the default VDP retention policy?
60 days.
What type of de-duplication does VDP employ?
Variable Length Segment De-duplication
What type of de-duplication do most other (non-VDP) backup tools employ?
Fixed Length de-duplication
How many VDP Advanced appliances are supported per vCenter Server?
10 VDP Advanced appliances
What are the VDP Advanced Appliance support maximums?
8TB of de-duplicated backup data storage capacity (deployed with 2TB initially and expandable by 2TB increments)
400 VM’s per VDP Advanced appliance
What are the VDP Appliance support maximums?
8TB of de-duplicated backup data storage capacity
100 VM’s per VDP Advanced appliance
Where must a VDP Advanced Appliance be deployed in order to support vSphere SCSI hot-add?
In the same cluster as the virtual machines being backed up.
If a VDP Advanced Appliance is not deployed in the same cluster as the virtual machines being backed up, what feature is used instead of vSphere SCSI hot-add?
Network Block Device (NBD) transport.
What are the major components for vSphere Update Manager?
(1) Update Manager Server
(2) Patch Database
(3) Update Manager plug-in
(4) Guest Agents
(5) Update Manager Download Service
What are the VMkernel port types?
IP Storage, vMotion migration, vSphere Fault Tolerance, and Management
What does benefit does the vSphere Distributed Switch Network Health Check provide?
Network Health Check helps to detect misconfigurations across physical and virtual switches.
What does benefit does the vSphere Distributed Switch Configuration Backup provide?
Configuration Backup allows administrators to save and recover the network from previous configurations.
What are the primary LACP limitations in vSphere 5.5?
Software iSCSI multipathing is not compatible.
No support for host profiles
One LAG per distributed port or port group
What is the maximum number of LAGs per host and vSphere distributed switch
64 LAGs
What functionality do PVLANs provide
Private VLANs are a way to provide layer 2 network isolation between servers in the same subnet.
Virtual Machines in an isolated secondary private VLAN may not communicate with other virtual machines except?
Virtual machines in the promiscuous secondary private VLAN.
Virtual Machines in a community secondary private VLAN may communicate with each other and what other virtual machines?
Virtual machines in the promiscuous secondary private VLAN.
How much overhead does VXLAN add on top of each L2 frame?
50 bytes
How many logical networks does VXLAN provide?
16M
What hash distribution algorithm is required when using VXLAN with LACP
5-tuple hash distribution
Which virtual appliance is required to deploy VXLAN
vShield virtual appliance
What is the maximum number of storage controllers configurable for a virtual machine?
8 storage controllers can be configured per virtual machine, 4 SCSI and 4 SATA
What are the maximum number of disks configurable for a virtual machine?
180 disks - 60 SCSI and 120 SATA disks.
Can a SATA drive map to a RAW LUN?
No - SATA drives only map to a VMDK file. SCSI Drives can map to VMDK files and RAW LUNs.
Can a SCSI drive map to a RAW LUN?
Yes - SCSI drives can map to VMDK files or RAW LUNs. SATA Drives however can only map to VMDK files.
What are the maximum number of VMFS volumes configurable per host?
256 VMFS volumes can be configured per host.
What are the maximum number of NFS datastores per host?
64 NFS datastores is the ceiling - but this must be configured beyond the default of 8 NFS datastores per host.
What is the maximum size of a VMFS datastore?
64TB is the maximum VMFS datastore size for vSphere 5.5
What is the minimum NFS version for ESXi to use NFS as a datastore?
NFS version 3 is required for ESXi to use NFS as a datastore.
How many (maximum) hosts can connect concurrently to a single VMFS 5 volume
Up to 64 hosts may connect concurrently to a single VMFS 5 volume.
Can an NFS share be mounted to non-vSphere systems while being accessed by an ESXi host?
Yes - this can simplify movement of file in or out of an NFS datastore.
What is the default virtual disk provisioning mode for NFS volumes?
Virtual disks are thin-provisioned by default on NFS datastores.
What is vSphere Flash Read Cache?
vSphere Flash Read Cache pools flash based devices into a single resource for write-through caching of VM I/O and swap.
What are the two main components of vSphere Flash Read Cache?
vSphere Flash Read Cache is composed of two primary components (1) vSphere Flash Read Cache Software and (2) vSphere Flash Read Cache Infrastructure.
What new feature replaces the Swap to SSD feature?
vSphere Flash Swap Cache replaces the Swap to SSD feature.
Which client is required to configure vSphere Flash Read Cache?
The Web Client is required to manage vSphere Flash Read Cache.
What are the boot device minimums for an ESXi 5.5 host?
A minimum of 1GB of storage is required. Booting from local or SAN storage requires a 5.2GB disk.
What is the minimum size of a scratch partition for auto deploy scenarios?
A 4GB scratch partition is required and can be shared by multiple hosts from a single SAN LUN.
What type of disk provisioning is required for Virtual Machines using the FT feature?
Eager-Zerod Thick Provisioned Disks
What are the only two products that utilize Space Efficient Sparse Disks?
VMware View 5.1 and VMware Horizon View 5.x
What type of virtual disk is not supported when using the newly introduced vSphere 5.5 62TB capacity disk?
Sparse disks are not currently supported with 62TB drives.
What are the two major features of a Space Efficient Sparse Disk?
(1) SE Sparse Disks can reclaim storage space from deleted files within the guest OS
(2) Utilize granular block size allocation controlled by VM application
What is the minimum and maximum size of a VMFS version 5 volume?
VMFS 5 volumes have a 1.3GB minimum and 64TB maximum.
How many additional extents can be added to an existing VMFS datastore?
32 additional extents (of the same storage type) may be added to an existing VMFS datastore.
What is the lowest version of VMFS supported by ESXi 5.5?
VMFS version 3 is the lowest version of VMFS supported by ESXi 5.5. VMFS 2 volumes must be first upgraded to version 3 before before upgrading them to VMFS 5.
Does ESXi 5.5 support VMFS version 2 volumes?
No, VMFS version 2 volumes must be upgraded to VMFS 3 before upgrading to VMFS 5 directly.
What is vSphere Fault Tolerance (FT)?
vSphere Fault Tolerance (FT) runs a virtual machine in lockstep simultaneously on two hosts. In the event that the primary host is lost, the secondary virtual machine takes over without interruption or loss of data.
Describe how vSphere snapshots are implemented.
vSphere Snapshots are implemented using sparse disks with a Copy-On-Write mechanism that use to fill in the data in the sparse disk while the snapshot is in use.
Can alarms be changed or overridden at the child level?
No - alarms cannot be overridden at the child level.
What are the default datastore utilization thresholds for vSphere alarms?
vSphere will generate a warning at 75% utilization and an alert when the utilization exceeds 85%.
What are the available RDM compatibility modes?
An RDM can be configured in Virtual or Physical mode
Which RDM compatibility mode supports snapshots and file locking system for data protection
Virtual RDM
Which RDM compatibility mode passes all SCSI commands directly to the device except for Report LUNs?
Physical RDM
What is the maximum size of a virtual RDM?
62TB
What is the maximum size of a physical RDM?
64TB
What is VMDirectPath IO?
VMDirectPath IO provides a storage adaptor directly to a VM - this is incompatible with live migration (vMotion, HA, DRS) and snapshots.
What is the maximum capacity of a 3-host vSphere 5.5 VSA cluster?
36TB
Can an additional member be added to a running VSA cluster?
No
How many 3TB drives can be used by a VSA appliance per ESXi host?
A VSA appliance may a maximum of 8 local drives with a capacity above 2TB and up to 3TB each
How many 2TB (or less) drives can be used by a VSA appliance per ESXi host?
A VSA appliance may a maximum of 12 local drives or up to 16 disks in an expansion chassis with a capacity at less than 2TB each
What is the effective total usable storage for a 3 node VSA cluster using 3TB drives?
27TB
What is the effective total usable storage for a 3 node VSA cluster using 2TB or less drives?
36TB
Can vCenter server be run from a VSA datastore?
Yes - but only when there are 3 hosts in the VSA cluster.
What is the maximum speed provided by a SAS controllers
SAS controllers provide 6Gb transfer rates (approximately 600 MB/sec)
Generally how many IOPs are delivered by 7.2K RPM SAS Drives
Approximately 75-100 IOPS
Generally how many IOPs are delivered by 15K RPM SAS Drives
Approximately 210 IOPS
What is the typical Bit Error Rate for SAS drives?
1 in 10^16
What is the MTBF for SAS drives?
Approximately 1.6 million hours or 180 years.
Generally how many IOPs are delivered by NL-SAS Drives?
50-100 IOPS
Generally how many IOPs are delivered by SSD Drives?
Typically range from 5,000 to 750,000 IOPs
What are the two Native Multipathing sub-Plug-in types
Storage Array Type Plug-ins (SATPs)
Path Selection Plug-ins (PSPs)
What is the default thick provisioned disk type
Lazy Zero
What setting must be configured in order to enable iSCSI path failover and load balancing?
Port Binding.
What is the minimum vSphere License for Storage IO Control (SIOC)
Enterprise Plus
What resources are managed by Storage DRS for a datastore cluster?
Capacity (storage utilization)
IOPS latency
What are the VAAI Primitives for Block Storage?
ATS (Atomic Test and Set)
Clone Blocks/Full Copy/XCOPY
Write Same (Zero)
What are the VAAI Primitives for NAS Storage?
Full File Clone
Native Snapshot Support
Extended Statistics
Reserve Space
What are the VAAI Primitives for Thin Provisioning?
OOS Alarm/VM Stun
UNMAP
What is the purpose of the block ATS (Atomic Test and Set) VAAI Primitive?
Replaces SCSI reservations and is used during file creation and locking.
What is the purpose of the block Clone Blocks/Full Copy/XCOPY VAAI Primitive?
Copy or migrate data within the same physical array
What is the purpose of the block Write Same (Zero) VAAI Primitive?
Used to zero out disk regions
What is the purpose of the NAS Full File Clone Primitive?
Enables virtual disks to be cloned by the NAS device.
What is the purpose of the NAS Native Snapshot Support Primitive?
Allows virtual machine snapshots to be offloaded to the NAS array.
What is the purpose of the NAS Extended Statistics Primitive?
Enables visibility into space usage on NAS data stores and is useful for thin provisioning.
What is the purpose of the NAS Reserve Space Primitive?
Enables creation of thick virtual disk files on NAS.
What is the purpose of the thin provisioning OOS Alarm /VM Stun Primitive?
Allows reporting for out of space conditions on SCSI LUNS (similar to what NFS provides) when the LUNS are thin provisioned
What is the purpose of the thin provisioning UNMAP Primitive?
Reclaim dead space (specified in block sized increments)
What is vSphere Storage API - Storage Awareness (VASA)?
A set of APIs that permit arrays to integrate with vSphere and three types of information: storage topology, storage capability, and storage state
What are the three VASA information types?
(1) storage topology,
(2) storage capability,
(3) and storage state
Does FCOE support VASA vendor providers?
no
What is profile driven storage?
Categorize data stores based on defined levels of service and ensure virtual machines are located on the appropriate tier of storage.
What license is required for profile driven storage?
Enterprise Plus is required for profile driven storage.
Is Transparent Page Sharing (TPS) enabled or disabled by default?
TPS is enabled by default.
How many hosts can be utilized with a vSphere Essentials Plus license
The vSphere Essentials Plus license is limited to three (3) hosts.