What failure will beacon probing identify in vSphere networking?
A. An improper VLAN configuration on a physical switch port
B. A disconnected network cable
C. A VMkernel IP mismatch affecting vMotion or HA traffic
D. Jumbo frames improperly configured on an iSCSI target
http://kensvirtualreality.wordpress.com/2009/04/10/the-great-vswitch-debate-part-4/ (see beacon probing)
An administrator is creating a vSphere Standard Switch with virtual machine and VMkernel networking. The administrator has two uplinks attached to the switch and wants to make sure multiple sessions for a virtual machine can utilize both uplinks.
Which load-balancing policy will guarantee this requirement is met, even if additional management or virtual machine traffic is added to the switch in the future?
A. Route based on IP hash
B. Route based on source MAC hash
C. Route based on the originating port ID
D. Use explicit failover.
http://www.vmware.com/files/pdf/virtual_networking_concepts.pdf (page 8, see route based on IP hash)
An administrator wants to determine the current network adapter configuration for an uplink on an ESXi 5.x host.
Which three items can be viewed from the Network Adapters section of the Configuration tab, using the vSphere Client? (Choose three.)
A. VLAN configuration
B. Adapter Driver
C. Actual speed and duplex
D. Adapter Name
E. vSwitch configuration
Which two storage adapters require no VMkernel ports? (Choose two.)
A. Independent Hardware iSCSI Adapter
B. iSCSI Software Adapter
C. Dependent iSCSI Adapter
D. Fibre Channel HBA
Independent hardware iSCSI adapter and Fibre Channel HBA don’t need VMkernel ports. Independent hardware iSCSI adapter implements its own networking and management interfaces. All configuration such as IP management, MAC addressing and other parameters are completely separate from VMware.
When a virtual machine interacts with persistent thick virtual disks stored on a traditional Fibre Channel storage array, which two actions are always taken by the VMkernel? (Choose two.)
A. The file corresponding to the virtual machine is located on the VMFS datastore using NPIV.
B. Correlate the blocks requested by the virtual machine with the actual blocks on the array.
C. Send the I/O request through the device driver to the physical HBA or software FCoE adapter.
D. Place an atomic lock on the metadata database for the VMFS volume.
Which options would reduce the load on the VMkernel when connecting to an iSCSI array? (Choose two.)
A. Use an independent hardware iSCSI adapter
B. Use a Converged Network Adapter
C. Enable the software iSCSI adapter
D. Use a dependent hardware iSCSI adapter
Since independent hardware iSCSI adapter doesn’t need a VMkernel port, and it uses all its
networking and management interfaces all by itself, it will significantly reduce the load on VMkernel. Similarly, dependent iSCSI adapter use very little resources and hence can reduce the load off VMkernel.
LEAD2PASS Tools has a vSphere 5.x deployment with an older iSCSI storage array. The administrator is considering adding an additional array which will include support for the vStorage APIs for Array Integration (VAAI).
Which two tasks would would be completed in a reduced period of time if the new array was added? (Choose two.)
A. creating VMFS datastores on the new array
B. creating fault tolerant virtual machines on the new array
C. migrating virtual machines using Storage vMotion between the arrays
D. writes to thin provisioned virtual disks on the new array
A vSphere 5.x environment has an ESXi 5.x host configured to boot from a hardware independent iSCSI adapter.
What is the expected outcome if the administrator attempts to disable the iSCSI HBA in the vSphere client?
A. The adapter will be disabled, but is re-enabled the next time the host boots up.
B. The adapter will be disabled and the host will not boot the next time the host boots up.
C. A hardware independent iSCSI adapter cannot be disabled from the vSphere Client.
D. The adapter will be enabled, but the host will boot into troubleshooting mode the next time the host boots up.
https://www.aglt2.org/wiki/pub/AGLT2/SetupMD3600i/vsp_41_iscsi_san_cfg.pdf(page 31 onwards)
How does a hardware FCoE Adapter appear to an ESXi host?
A. As an uplink adapter attached to a vSphere Distributed Switch.
B. As a hardware FCoE Adapter.
C. As an enabled FCoE software initiator.
D. As a Fibre Channel Adapter.
What two statements are true about Fibre Channel zoning? (Choose two.)
A. Zones define paths to a Fibre Channel array
B. Zones control access to LUNs on a Fibre Channel storage array
C. Zones can be soft or hard
D. Zones can be configured on an array or ESXi host
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