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Question 1

In one Oracle VM server you have 5 hardware virtualized guests in a running state. How many QEMU-DM background processes should you see running?

AOne. For devices emulation on this server regardless of how many hardware virtualized guests are running.

BTwo. One of the handled CPU emulation and one for the devices emulation.

CFour. One master oneslave process for CPU emulation. One master one slave process for devices emulation.

DFive. One for each virtual machine.

ENone. QEMU-DM background processes are not used for hardware virtualized guests.

Correct : D

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AOne. For devices emulation on this server regardless of how many hardware virtualized guests are running.

BTwo. One of the handled CPU emulation and one for the devices emulation.

CFour. One master oneslave process for CPU emulation. One master one slave process for devices emulation.

DFive. One for each virtual machine.

ENone. QEMU-DM background processes are not used for hardware virtualized guests.

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Question 2

When using NFS, what technology is used to control locking on the NFS mount?

AOracle VM uses the same DLM (distributed lock manager) for NFS as it does for OCFS2 partitions.

BThe standard NFS drivers are sufficient to properly lock files in an NFS repository.

COracle VM ships with the IO-EMU drivers, which provide proper locking for files on an NFS repository.

DOracle VM ships with a DM-NFS server, which runs on the master pool server and handles distributed file locking for an NFS repository.

Correct : A

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AOracle VM uses the same DLM (distributed lock manager) for NFS as it does for OCFS2 partitions.

BThe standard NFS drivers are sufficient to properly lock files in an NFS repository.

COracle VM ships with the IO-EMU drivers, which provide proper locking for files on an NFS repository.

DOracle VM ships with a DM-NFS server, which runs on the master pool server and handles distributed file locking for an NFS repository.

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Question 3

In a paravirtualized environment, which answer best describes the drivers that are used in domO and the guest to communicate network I/O requests?

AA netback driveris used in dom0, and a netfront driver is used in the guest.

BA native device driver is used in dom0, and a netback driver is used in the guest.

CA netfront driver is used in dom0, and a native device driver is used in the guest.

DA netfront driveris used in dom0, and a blkbck driver is used in the guest.

ENative drivers are used in both dom0 and the guest.

Correct : A

http://mokumsolutions.com/chapter-2-oracle-vm-x86-reference-design-and-architectural-introduction

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AA netback driveris used in dom0, and a netfront driver is used in the guest.

BA native device driver is used in dom0, and a netback driver is used in the guest.

CA netfront driver is used in dom0, and a native device driver is used in the guest.

DA netfront driveris used in dom0, and a blkbck driver is used in the guest.

ENative drivers are used in both dom0 and the guest.

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Question 4

What does tools are available from 0racle that best describe virtual machine performance ofa virtual machine?

Axm list

Boswatcher installed in the guests

Ctop

Dxm top

Ecat /proc/cpuinfo

Correct : D

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Axm list

Boswatcher installed in the guests

Ctop

Dxm top

Ecat /proc/cpuinfo

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Question 5

Networking is not working for several guests on a particular host. Which two commands can help troubleshoot the networking?

Axm list -1 will show all of the network interfaces for all of the virtual machines, which can be used to see which bridge is having problems.

Bconfig_network.py -l will show which network interfaces are in use, and which are having problems.

Cbrctl show will show the status of each bridge, and which VIFs are connected to it. This canthen be used to determine which bridge is having problems.

DSystem-config-network will list the virtual interfaces, which can be inspected to see which are having problems.

Eifconfig -a will show a list of all network interfaces and their current status, which will help determine which bridge is having problems.

Correct : C, E

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Axm list -1 will show all of the network interfaces for all of the virtual machines, which can be used to see which bridge is having problems.

Bconfig_network.py -l will show which network interfaces are in use, and which are having problems.

Cbrctl show will show the status of each bridge, and which VIFs are connected to it. This canthen be used to determine which bridge is having problems.

DSystem-config-network will list the virtual interfaces, which can be inspected to see which are having problems.

Eifconfig -a will show a list of all network interfaces and their current status, which will help determine which bridge is having problems.

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Exam Name: Oracle VM 3.0 for x86 Essentials
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