VMware Certified Professional on vSphere 5
Question No: 91 – (Topic 2)
Which two statements are true about VLANs and portgroups defined on a vSphere Standard Switch? (Choose two.)
A VLAN can be accessed by the entire virtual switch or individual portgroups.
VLANs can be configured only on individual portgroups.
Multiple portgroups are restricted from accessing the same VLAN.
Multiple VLANs can be accessed by virtual machines connected to one portgroup.
Answer: A,D Reference:http://www.vmware.com/files/pdf/virtual_networking_concepts.pdf(page 6, see port groups)
Question No: 92 – (Topic 2)
A vSphere Standard Switch has been configured for IP-based load balancing using two uplinks. A new uplink is added to the vswitch. What additional configuration is required by default?
The uplink is placed in standby mode until it is added to the active NIC team.
The uplink is considered active, but it will not participate in the active NIC team until assigned to a port group.
The physical switch must add the new port to the existing802.3ad group.
The uplink is automatically marked as unused when it is added to IP-based NIC team.
Answer: C Explanation:
For 802.3ad group, you need to add a physical switch to make sure it works properly. The switch must be set to perform 802.3ad link aggregation in static mode ON and the virtual switch must have its load balancing method set to Route based on IP hash. Ensure that the participating NICs are connected to the ports configured on the same physical switch.
Topic 3, Plan andConfigure vSphere Storage
Question No: 93 – (Topic 3)
An administrator is working to implement Storage Profiles in their environment. Which two ways can storage capabilities be generated? (Choose two.)
They are generated by Datastore Clusters as LUNs are added tothe cluster.
They are automatically determined by the Storage Profile when it is created.
They can be retrieved from the array through the VMware APIs for Storage Awareness (VASA).
They can be manually generated by the administrator.
Answer: C,D Explanation:
Understanding Storage Capabilities
A storage capability outlines the quality of service that a storage system can deliver. It is a guarantee that the storage system can provide a specific set of characteristics for capacity, performance, availability, redundancy, and so on.
If a storage system uses Storage APIs – Storage Awareness, it informs vCenter Server that it can guarantee a specific set of storage features by presenting them as a storage capability. vCenter Server recognizes the capability and adds it to the list of storage capabilities in the Manage Storage Capabilities dialog box. Such storage capabilities are system-defined. vCenter Server assigns the system-defined storage capability to each datastore that you create from that storage system.
Because multiple system capabilities for a datastore are not supported, a datastore that spans several extents assumes the system capability of only one of its extents.
You can create user-defined storage capabilities and associate them with datastores. You should associate the same user-defined capability with datastores that guarantee the same level of storage capabilities. You can associate a user-defined capability with a datastore that already has a system-defined capability. A datastore can have only one system- defined and only one user-defined capability at a time.
Question No: 94 – (Topic 3)
An administrator has deployed vCenter Data Recovery and wants the largest possible de- duplication store. Which three storage options can be used? (Choosethree.)
Two CIFS shares
Two RDMs on a FCP array
One NFS mount on the ESXi host and one RDMs on an iSCSI array
One CIFS share and one FCP RDM
Two NFS mounts on the ESXi host
Explanation: VDR supports deduplication stores that are up toone terabyte in size and each backup appliance is limited to using two deduplication stores per appliance ( 1 TB on VMDKs and RDMs and 500 GB on CIFS network shares). To get the largest possible dedup store, we must not use CIFS.
Question No: 95 – (Topic 3)
An administrator must decommission a datastore.
Before unmounting the datastore, which three requirements must be fullfilled? (Choose three.)
No virtual machines reside on the datastore.
The datastore is not used for vSphere HA heartbeat.
Noregistered virtual machines reside on the datastore.
The datastore must not have any extents.
The datastore must not be part of a datastore cluster.
Question No: 96 – (Topic 3)
A company wants to increase disk capacity for their vSphere environment Management mandates that:
vMotion must work in this environment.
The existing LAN infrastructure must be used.
Which storage option best meets the company objectives?
Answer: D Explanation:
NFS is agood choice to increase disk capacity of a vSphere environment in which vMotion can be used and the existing LAN infrastructure can be used.
Question No: 97 – (Topic 3)
An administrator has determined that storage performance to a group of virtual machines is reduced during peak activity. The virtual machines are located in a VMFS datastore called Production1 on an active-active storage array. The ESXi 5.x host running the virtual
machines is configured with an MRU multipathing policy.
Which two actions can be takento improve the storage performance of these virtual machines? (Choose two.)
Add virtual storage, create a VMFS datastore called Production2 on the new storage, and then migrate some of the virtual machines from Production1 to Production2.
Change the storage multipathing policy to Round Robin.
Add physical storage, create a VMFS datastore called Production2 on the new storage, and then migrate some of the virtual machines from Production1 to Production2.
Change the storage multipathing policy to Fixed with default settings.
Answer: B,C Explanation:
Round Robin (VMware) The host uses an automatic path selection algorithm rotating through all available paths. This implements load balancing across all the available physical paths.
Load balancingis the process of spreading server I/O requests across all available host paths. The goal is to optimize performance in terms of throughput (I/O per second, megabytes per second, or response times).
Question No: 98 – (Topic 3)
Which three requirements must be met inorder to use Storage I/O Control? (Choose three.)
The datastore must contain multiple VMFS extents.
The datastore must contain a single NFS volume.
The datastore must not include virtual machines with snapshots.
The datastore must be managedby a single vCenter Server.
Array-based automated storage tiering must be explicitly certified.
Answer: B,D,E Explanation:
Extents are only a single extent – not multiples. Also, because NFS is not VMFS it does not use extents. You grow the NFS fromthe actual NAS appliance itself with extents.
Question No: 99 – (Topic 3)
What number of IOPS should be used with Storage I/O Control to limit disk throughput to roughly 10 MBps if the guest application writes 64KB blocks?
Answer: B erence:http://www.vmware.com/files/pdf/techpaper/view_storage_considerations.pdf(page 3 and 4)
Question No: 100 – (Topic 3)
What are two methods of maximizing VMFSperformance for virtual machines across all the hosts in a cluster? (Choose two.)
Use disk shares to prioritize virtual machine disk I/O
Enable Storage I/O control
Enable Storage DRS with I/O load balancing
Enable Host Cache using local SSD drives
Answer: B,C Explanation:
To maximize VMFS performance of virtual machines, you can enable Storage I/O control and storage DRS with I/O load balancing.
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