Vsphere Foundations (2V0-620)

Front 1

What are the changes that could result in a HOST Network rollback operation?

Back 1

Host networking rollbacks occur when an invalid change is made to the networking configuration for the connection with vCenter Server.

Every network change that disconnects a host also triggers a rollback. The following examples of changes to the host networking configuration might trigger a rollback:

- Updating the speed or duplex of a physical NIC

- Updating DNS and routing settings

- Updating teaming and failover policies or traffic shaping policies of a standard port group that contains the management VMkernel network adapter

- Updating the VLAN of a standard port group that contains the management VMkernel network adapter

- Increasing the MTU of management VMkernel network adapters and its switch to values not supported by the physical infrastructure

- Changing the IP settings of management VMkernel network adapters

- Removing the management VMkernel network adapter from a standard or distributed switch

- Removing a physical NIC of a standard or distributed switch containing the management VMkernel network adapter

Front 2

An Administrator suspects the virtual machines on the host are trying to send more throughput to the storage system than the configuration on the host supports. What data counter would best identify the suspected problem?

Back 2

The administrator should start researching the time an I/O request is spent waiting inside the vSphere Storage Stack. Disk metrics for individual virtual machines are explained in the virtual machine performance chart section of the vSphere Monitoring and Performance Guide.

Front 3

An Administrator wants to remove all the CIM data for the last 2 years to make troubleshooting easier. What is the correct method of doing this?

Back 3

Common Interface Module (CIM) data can be removed by resetting the sensors monitoring for CIM. Directions for doing so are outlined in the Monitoring Host Health Status section in the vSphere Administration with the vSphere Client Guide.

Front 4

An administrator does not see the Hardware Status tab in the vSphere Web Client? What two conditions could explain this behavior?

Back 4

The Hardware Status tab is a Management Webservice that is enabled through a Plug-In. To find out more about this topic view the vSphere Concepts and Features section of the vCenter Server and Host Management Guide.

Front 5

When attempting to power on a virtual machine, the following error message is shown: "Unable to access a file since it is locked". What are two actions that can be taken to address this situation?

Back 5

File locks are a fairly common troubleshooting scenario. In situations where the virtual machine file is locked, an administrator would want to fix the error in a way that would limit any downtime and/or degradation of any other virtual machines sharing space with the locked virtual machine. Logs would need to be gathered from both virtual machine and host and if necessary the administrator would need to release the file lock by vMotioning off the other virtual machine(s) on the host that holds the lock and reboot it.

Front 6

Which two features are supported when using Fault Tolerance in vSphere 6.x?

Back 6

Fault tolerance Requirements, Limits and Interoperability can be found in the Fault Tolerance for Virtual Machines section of the vSphere Availability Guide.vSphere Distributed Switches

Front 7

What is the minimum virtual machine hardware version a virtual machine built using vSphere 4.1 needs to be at to be moved to an ESXi 6.x host?

Back 7

Virtual Machine Compatibility Options are laid out in the Virtual Machine Compatibility section of the vSphere Virtual Machine Administration Guide.

Front 8

Which two statements are correct when disabling Distributed Resource Scheduler (DRS) Cluster on vSphere 6.x Cluster?

Back 8

The affinity settings of the DRS cluster are maintained when DRS is re-enabled.What happens when DRS is disabled is explained in the Disable DRS in the vSphere Client section of the Resource Management in the vSphere Client Guide.

Front 9

What is NOT a benefit of using VMware Data Protection (VDP)?

Back 9

VMware Data Protection (VDP) offers administrators a wide arrange of backup methodologies. The benefits of vSphere Data Protection are explained in the VMware Data Protection Administration Guide.

Front 10

What network is used for HA Network Heartbeat configuration on a Virtual SAN cluster?

Back 10

With the Virtual SAN (vSAN) feature of vSphere 6.x, traffic is segmented, much like vMotion, iSCSI and Management networks are. When setting up vSphere HA with a Virtual SAN, refer to the Creating and Using vSphere HA Clusters section of the vSphere Availability Guide.

Front 11

A storage administrator requests that their virtual machine have direct access to the LUN attached to it. What type of storage would fulfill this request?

Back 11

SAN-aware applications on the virtual machine often require a “hands-off” passthrough to the SAN itself. The various options an administrator has when presenting storage is outlined in the Create Virtual Machines with RDMs section of the vSphere Storage Guide.

Front 12

An administrator is deploying multiple Windows 2003 virtual machines from the same template. What two steps should be taken to avoid network conflicts?

Back 12

An administrator in most cases will want to customize the Guest Operating System. If an administrator does deploys multiple virtual machines with the same hostname and IP, it can cause service interruptions. The steps to achieve that are in the Deploy a Virtual Machine from Template section of the vSphere Virtual Machine Administration Guide.

Front 13

What are the changes that could result in a DISTRIBUTED Switch Network rollback operation?

Back 13

Distributed switch rollbacks occur when invalid updates are made to distributed switch-related objects, such as distributed switches, distributed port groups, or distributed ports. These changes to the distributed switch configuration might trigger a rollback:

- Changing the MTU of a distributed switch

- Changing the following settings in the distributed port group of the management VMkernel network adapter

- Teaming and failover

- VLAN

- Traffic shaping

- Blocking all ports in the distributed port group containing the management VMkernel network adapter

- Overriding the policies above for the distributed port to which the management VMkernel network adapter is connected

If an invalid configuration for any of the changes occurs, one or more hosts might be out of synchronization with the distributed switch.

If you know where the conflicting configuration setting is located, you can manually correct the setting. For example, if you migrated a management VMkernel network adapter to a new VLAN incorrectly, the VLAN might not be trucked on the physical switch. When you correct the physical switch configuration, the next distributed switch-to-host synchronization will resolve the configuration issue.