Term
| Name two components that can be installed in monitored virtual machines to trigger vSphere HA Applicaiton monitoring? |
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Definition
1. A custom script utilizing the appmonitor executable
2. Third-party utilities such as Neverfail or Application HA
Ref: http://www.yellow-bricks.com/2011/08/11/vsphere-5-0-ha-application-monitoring-intro/ |
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Term
| An administrator wants to determine the current network adapter configuration for an uplink on an ESXi 5.x host. Name 3 items that can be viewed from the Network Adapters section of the Configuration tab, using the vSphere client |
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Definition
1. Adapter Name (Device)
2. Actual speed and duplex as well as configured speed and duplex
3. vSwitch information
4. Observed IP ranges
5. Wake on LAN supported
Ref: http://pubs.vmware.com/vsphere-50/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-50-networking-guide.pdf page 11 |
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Term
| What is the simplest way to improve backup performance on VDR when VMs are failing to backup within the backup window? E.g. 16x database virtual machines using 8 backup jobs. Each DB VM has 4vCPUs, 16GB of RAM and 12 virtual disks |
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Definition
| A: Add 1MB VMDK drives at 1.0, 2.0 and 3.0 of the VDR appliance. |
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Term
| Which types of information can be obtained about a VMFS datastore using the summary tab for a connected host in the vSphere Client? Name 2. |
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Definition
1. -Hardware Acceleration status
2. -Alarm Actions Status
Others:
-Datastore Name & its Status
-Drive type Status
-Capacity & Free Status
-Last Update Status
-Storage I/O controls Status |
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Term
| An administrator is configuring an ESXi 5.x host with two dual-port FC HBAs. The FC storage array has four active storage processor ports. Zoning is configured for both fabrics, with ESXi HBA ports and teh array ports in the same zone. There are two LUNs with VMFS datastores configured. Using Round Robin multi-pathing, what is the maximum number of paths that can be used to send data to the VMFS datastores at any given time? |
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Definition
A: 2
Explanation: Multi-pathing is set on the HBA level and there are 2 HBAs. Therefore they will alternate on each HBA.
Reference: Mastering vSphere Pg 289, 321 |
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Term
Identify two correct statements about FC zoning out of the below:
A: Zones define paths to a FC array
B: zones control access to LUNs on a FC storage Array
C: Zones can be soft or hard
D: Zones can be configured on an array or ESXi Host |
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Definition
True:
A: Zones define paths to a FC array (I would not say this)
B: zones control access to LUNs on a FC storage Array (my answer)
C: Zones can be soft or hard (agreement)
Reference: Mastering vSphere Pg 269-271 |
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Term
| A vsphere environment is created with two VMs 1 and 2. Each VM has an instance of the same application and a physical load balancer is configured for the app. What policy should be set in DRS for the 2 VMs? |
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Definition
| Anti-affinity VM to VM. You must ensure the VMs remain on separate ESXi hosts. |
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Term
| Which two migration techniques can be used together to move a running VM to a local datastore on a different server? |
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Definition
A:
Storage vMotion
vMotion (assuming 'together' can mean sequentially)
But - 'cold migration' if 'together means concurrently |
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Term
| What failures with beacon probing detect in vSphere networking? |
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Definition
1. An improper vLAN configuration on a physical switch port
2. Spaning Tree Protocol has blocked ports
3. A switch to switch connection has failed
Ref: Mastering vSphere p200 |
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Term
| List the host requirements for EVC. |
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Definition
1. Hosts must be ESX/ESXi 3.5 Update 2 or later
2. Hosts must have hardware virtualization support enabled
Other:
-Connected to vCenter Server
- Be from a single vendor (AMD or Intel)
- Have MD No eXecute(NX) enabled if AMD
- Have Intel eXecute Disable (XD) enabled if Intel
Ref: http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.vcenterhost.doc%2FGUID-FEC87C0B-7276-4152-8EAA-915305E64FED.html |
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Term
| Name 2 reasons to upgrade a VM hardware version ( in 5.0) |
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Definition
1. Add more than 8 vCPUs to a VM
2. Increase the vRAM of a VM to 512GB
Note: only relevant for 5.0, not 5.1 |
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Term
| Several VMs in a resource pool are exhibiting poor performance and a critical VM appears hung. Name one step that could be taken to increase the performance of the critical VM |
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Definition
| Increase or remove the CPU or Mem limit on the resource pool depending on which is set |
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Term
| What are two reasons why a company would choose ESXi 5.x instead of workstation 8? |
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Definition
1. THey need VMs up to 16 vCPUs (in 5.0 only)
2. They want the lowest overhead for their infra. |
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Term
| Name 3 reasons why you would use an RDM |
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Definition
1. Physical server-to-virtual machine clustering
2. NPIV
3. SAN management agents
Note - Distributed file locking requires RDM for iSCSI, not for FC. vMotion and HA possible with RDM. Virtual RDMs support FT. Physical do not.
Ref: http://pubs.vmware.com/vsphere-50/index.jsp search under Benefits of RDM |
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Term
| An admin upgraded to ESXi 5.x. A backup was performed before upgrade and restored to the upgraded host. Users are unable to power on VMs. What two reasons could explain this? |
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Definition
1. The backup was performed prior to a license key being applied and;
2. It has been more than 60 days since the host was originally installed |
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Term
| An admin is enabling Enhanced vMotion Capability (EVC) in a DRS cluster. The admin wants only hosts with the newest Intel procs added to the cluster. Which setting satisfies this requirement? |
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Definition
A: Create a new baseline and add only the latest processor family.
(OR the baseline with the fewest CPUs listed).
Research: can you create a new baseline at this stage? |
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Term
| What are three valid sub-profile configurations that can be edited with the Host Profile editor? |
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Definition
1. Date and Time
2. Networking
3. Security
Other:
-Memory reservation
-Storage
-Service
-Advanced
ref: http://pubs.vmware.com/vsphere-50/index.jsp
Search under: Edit host profile |
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Term
| How can you verify that storage APIs for Array Integration (VAAI) functionality is enabled for a storage array (vsphere 5.0) |
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Definition
Supported will be listed in the Hardware Acceleration column for any datastore created on a compliant array
Note: Supported if all VAAI features are supported
Not Supported if no VAAI features supported
Unknown if a combination
Ref: Mastering vSphere p 294-298 |
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Term
| Before upgrading ESXi host, you should back up the configuration. How can this be achieved. |
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Definition
| There is no way to do this through vCenter. You have to log in to either the ESXi host using vsphere CLI or log into vSphere Management Assistant (vMA) and use the vicfg-cfgbackuop command. |
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Term
| In a 10 node ESXi 5.x cluster (no DRS) there are VMs deployed from a template and powered on but a new VM deployed will not power on. There appear to be adequate CPU and mem resources available on the host. What 3 actions can you take to allow more VMs to be deployed from the template? |
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Definition
1. Select a different Datastore for the VM
2. Move the swap file to a diff location.
3. Increase the virtual machine memory reservation.
Note: Turning on DRS or moving to a diff host manually is unlikely to be the solution since the question says there is adequate mem and CPU on the host. |
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Term
| A VM requires a 4TB disk for app data. The admin has already created and presented a 4TB lun to an ESXi 5 hsot. The host is currently configured with a single 500GB VMFS5 datastore. What is the next step? |
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Definition
1. Expand the existing VMFS volume to 4TB
2. Create a virtual compatibility mode RDM mapping to the 4TB LUN |
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Term
| Name 3 steps for configuring iSCSI Software Initiator multipathing when load balancing with a single vSphere Standard Switch |
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Definition
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Term
| What steps are involved in configuring iSCSI software initiator multipathing when load balancing with a single vSphere Standard Switch? |
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Definition
1. Change the Path Selection Policy to Round Robin
2. Enable Override switch failover order
3. Add VMkernel adapters to the iSCSI Network Configuration |
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Term
| To enable Jumbo frames, you have to change the MTU in vSPhere. What is the default and what do you need to change it to? |
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Definition
"Change the Maximum MTU value from the default value of 1500 to 9000. This enables Jumbo Frames on all portgroups and ports."
Reference: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1038827 |
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Term
| When cloning a VM to a template, name 2 attributes that can be changed for the destination virtual disk. |
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Definition
1. Virtual disk format
2. Location for virtual machine files |
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Term
| A virtual machine failure occurs in a vSphere HA cluster, but the VM is not restarted. No error messages are given. Name two conditions that would explain this behavior. |
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Definition
1. The VM has failed 3 times
2. The HA cluster is set up with all defaults |
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Term
| Which resource management technique can be used to relieve NW bottleneck caused by a VM with occasional high outbound NW latency? |
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Definition
| A: Create a new portgroup for the VM and enable traffic shaping |
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Term
| What are two requirements when configuring a FC SAN with an ESXi 5.x cluster? |
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Definition
1. RDMs must be zoned and masked to each ESXi 5 host in the cluster
2. A FCP HBA or hardware supporting FCoE must be installed in the hosts
Note: Each LUN must present the SAME LUN ID to each host in the cluster. |
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Term
| Which virtual disk type is supported on a NAS using NFS with Hardware Acceleration Disabled? |
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Definition
Thin Provision
Note:
Not supported: RDM, Flat disk, Thick (lazy zero) (note RDM and lazy zeroing is specifically mentioned as something provided for NFS by VAAI) |
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Term
| What could cause Hardware Status tab to not work properly in vSphere Client assuming that the plug in is enabled? |
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Definition
| The VMware VirtualCenter Management Webservices Service is not started. |
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Term
| What is the recommended maximum memory value that is displayed when configuring a virtual machine based on? |
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Definition
| A: The amount of memory in the ESXi host |
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Term
| An admin has configured vDS to send all network traffic to a collector VM for analysis. However, the collector VM isn't collecting data. What could cause the issue (give two reasons) |
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Definition
1. the port group or distributed port group does not have NetFlow enabled
2. The source and target VMs are not on the same vDS
Reference: http://blogs.vmware.com/vsphere/2011/08/vsphere-5-new-networking-features-netflow.html |
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Term
| An administrator is investigating a report of slow disk performance. Where is the most efficient place for the admin to check? |
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Definition
| A: The performance tab of the VM |
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Term
| What are the three options for IP allocation in a vAPP |
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Definition
1. Fixed
2. Transient
3. DHCP |
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Term
| What would prevent an admin from deploying a VM from a template? |
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Definition
1. The vSphere Client is connected directly to an ESXi host instead of vCenter
2. The template is orphaned |
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Term
| What are three service offerings provided by a VMware powered public cloud? |
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Definition
1. Committed
2. Dedicated
3. Basic |
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Term
| How is page file for a windows guest operating system or the swap partition for a Linux guest operating system created? |
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Definition
A: By the guest OS
Note - you can tell that because they are different things for different OS. |
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Term
| Which types of Network traffic can be prioritized with Network IO control on a vDS by default? |
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Definition
1. NFS traffic
2. iSCSI Traffic
3. vSphere Replication Traffic |
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Term
| What is a requirement when adding an extent to a VMFS datastore? |
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Definition
An unused iSCSI or FCP LUN.
Not free space on the LUN already holding the VMFS datastore. |
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Term
| To ensure centralized logging and accurate timekeeping when deploying ESXi hosts, which two operations should be performed? |
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Definition
1. Ensure TCP Port 123 is not blocked (NTP client access)
2. Configure a SYslog server on the vSphere Management Appliance |
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Term
| Name 3 features that can be used with NAS |
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Definition
1. Datastores up to 64TB
2. Storage I/O Control
3. Storage DRS |
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Term
| Admin makes backups using VMware DR. Some jobs completed, others did not. Name 2 possible causes for the failure. |
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Definition
1. Eight backup jobs were running simultaneously, causing new jobs to fail to start
2. The backup window was not open long enough to retrieve all of the changed blocks |
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Term
| An admin is upgrading an ESXi 3.5 host to 5.x going through 4.x using UM. The host has a single proc, 4GB RAM and a VMFS DS on a private, SAN attached LUN. What might cause this to be unsuccessful? |
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Definition
| A: The ESXi host has one processor |
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Term
| An iSCSI array is being added. An admin wants to verify that all IP storage VMkernel interfaces are configured for jumbo frames. What are two methods to verify this? |
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Definition
1. Run the esxcli network ip interface list command
2. Ensure that MTU size is set correctly in the VMkernel interface properties in the vSphere client |
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Term
| An administrator is troubleshooting an ESXi 5.x host and needs to export diagnostic info. The host is currently managed by vCenter Server. How can info he gathered using vSphere Client? |
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Definition
1. Home -> Administration -> System logs -> Export System logs -> Select affected ESXi host -> Select Alll -> Select location -> Finish
2. Select affected host -> File -> Export -> Export system logs -> Select all -> Select location -> Finish |
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Term
| A host is being upgraded from 4.1 to 5.1 and has one vSwitch with default settings. 116 VMs will be connected with 4 uplinks configured for port based load balancing. The switch will include a secondary heartbeat network for HA. What two things will be changed? |
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Definition
1. Service Console Port will automatically be removed
2. A change to vSwitch0 Properties will be required |
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Term
| What parameters must be specified when adding an iSCSI target using the Static Discovery tab? |
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Definition
1. iSCSI server ip address
2. Port 3260
3. iSCSI target name |
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Term
| An administrator is creating a new VM using the New Virtual Machine wizard in custom mode on an ESXi 5.x host with two quad-core CPUs. What would limit hte maximum number of virtual sockets for the virtual machine to 8? |
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Definition
1. Hyperthreading is disabled on the host
2. The host is configured with standard licenses
3. The number of cores per virtual socket is set to 4 |
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Term
| Which solutions require RDM using virtual compatibility mode? |
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Definition
1. VM Snapshots
2. S vMotion |
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Term
| VM1 and VM2 can't communicate. Both are connected to the same port group, same switch, same host. What could explain the inability to communicate? |
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Definition
| One is set to VGT, one is set to VST |
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Term
| What settings are required for VM guest tagging for vLAN 100 in a vSphere 5.x environment? |
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Definition
| A: Port group configured for vLAN 4095, physical switch configured as a vLAN trunk |
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Term
| Which two features secure the VMkernel? |
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Definition
1. Kernel module integrity
2. Trusted Platform Mode (TPM) |
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Term
| WHich additional CHAP security levels are available for a software iSCSI initiator that are not available with independent hardware initiators? |
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Definition
1. Do not use CHAP unless required by target
2. Use CHAP |
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Term
| What are two valid SCSI adaptors for a Windows Server 2008 on an ESXi 5.x host? |
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Definition
1. Paravirtual SCSI
2. LSI Logic SAS |
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Term
| An admin has received reports of poor network performance with a VM. What task could they perform to improve network performance? |
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Definition
| 1. Move the VM to another virtual switch |
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Term
| What are 3 methods of adding virtual machine networking to a vDS? |
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Definition
1. A portgroup can be created using the vSphere client and virtual machines can be added using their Properties tab
2. A portgroup can be created using the vSphere client and virtual machines can be migrated using the Migrate Virtual Machine Networking wizard
3. A portgroup can be created during the creation of the vDS and virtual machines can be migrated using the Migrate Virtual Machine Networking wizard |
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Term
| The performance graph of a VM with 1GB of RAM shows the Swap In rate to be 150MBps and the Balloon value to be at 0MB. Users of hte virtual machine are complaining that performance is slow. What two actions could increase performance of hte VM? |
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Definition
1. Install VMware Tools to the VM
2. Increase memory share value of the VM
What about Install VMMEMCTL driver on the ESXi Host? This is definitely needed but I don't know if it is possible for it to become uninstalled or just disabled?? |
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Term
| Users are experiencing performance issues when updating their database hosted on a VM. The admin determines that disk I/O is high across one of the HBAs on the ESXi host containing the VM. What action will most likely correct the issue without significantly impacting the other users or datastores? |
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Definition
| A: Manually configure the disk multipathing policy to Round Robin for the datastore. |
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Term
| Assuming that ballooning IS POSSIBLE, when might the VMkernel use a swap file for a running VM? Give 3 circumstances? |
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Definition
1. The Mem.CtlMaxPercent value is between 10 and 25%
2. Memory cannot be claimed quickly enough
3. 50% of the configured memory has already been ballooned |
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Term
| An admin has been using an older iSCSI array and is now going to use one that supports VAAI. What tasks would be completed in a reduced time? |
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Definition
1. Creating fault tolerant VMs
2. Writes to Thin Provisioned virtual disks |
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