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Oracle VM 3 for x86 Essentials Questions and Answers

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Viewing questions 11-20 out of questions

Questions # 11:

On one of your Oracle VM server you are experiencing communication issue with all over the VMs on the same subnet. As part of troubleshooting this issue, what command you will use in dom0 of the Oracle VM server to identify only the network bridges currently configured?

Options:

esx –a

ifconfig –a –d bridges

netstat list

xen bridge display

prctl show

Answer

Questions # 12:

A customer wants to use hard partitioning with Oracle VM to restrict the number of cores that can be used by a virtual machine to four cores.

Which method will best accomplish that goal?

Options:

In Oracle VM Manager, set the maximum number of CPUs to 4.

Use the xm vcpu-pin command on the domain once it is up and running, using 4 for the CPUs parameter.

Modify the cpus line in vm.cfg to set the cpus to 0-3.

Use the xm vcpu-set command before the domain is up and running, using 4 for the CPUs parameter.

Modify the vcpus line in vm.cfg to read: vcpus=4.

Answer

Questions # 13:

Which two configuration files specify the cluster stack, boot cluster and network settings for the OCFS2 duster?

Options:

/etc/ocfs2/cluster.conf

/etc/sysconfig/ocfs2

/etc/sysconfig/cluster.conf

/etc/sysconfig/o2cb

Answer

B, D

Questions # 14:

While trying to create a new virtual machine you are receiving an error from Oracle VM Manager. What log file does the manager write to?

Options:

server.log in thesystem log directory.

error.log in the OVM manager bin directory.

admin.log in the xcn log directory

adminserver.log in the web logic server log directory.

diagnostocts.log in the web logic server log directory.

Answer

Questions # 15:

During installation of Oracle VM Manager to a new Oracle Enterprise Linux server, the installer fails with a message indicating that there is insufficient swap space.

What is the cause for this error?

Options:

The installer has determined that the Oracle application server's (OC4J) minimum requirement for swap space has not been met.

The installer has determined that the Oracle Database XE server's minimum requirement for swap space has not been met.

The installer has determined that there is insufficient swap space to unpack the installer into the /var subdirectory.

The installer has determined that the swap space recognized by the system has beenincorrectly formatted to use TMPFS instead of SWAPFS.

Answer

Questions # 16:

When a domain is live migrated, what resources are migrated between the source and target servers?

Options:

First the VM files are migrated between the servers, then the memory, then the CPU registers.

First the VM files are migrated between the servers, then the memory.

First the memory is migrated between the servers, and then the CPU registers.

Only memory is migrated.

Answer

Explanation

live migration- is similar to warm migration, except that the guest is notsuspended during transmission. Instead, the LDoms manager keeps track of memory changed while state is being transmitted, and then makes followup passes to retransmit data changed state information. Abriefpause is used at the end to transmit residual changed state. This method is typical for virtual machine systems that provide live guest migration.

Questions # 17:

What two attributes of a virtual machine are not available on the Oracle VM Manager Home screen when the virtual machine is currently powered down?

Options:

Memory Size

Server Name

VNC Port

Server Pool Name

Owner

Number of Virtual CPUs

Answer

B, C

Explanation

If you properly shutdown the virtual machine then you will not getthe Server Name surely. So that one correct answer is Server Name. Let’s find another correct answer.

Follow the picture and you will find that the virtual machines which are shutdowed and there is available of Owner and Server Pool Name. But if themachine is not up there so how will you get the vnc port for that machine :D?

Correct answer is B and C.

Questions # 18:

In an emulated/translated environment with ten guests, each operating at lOOOHz clock rate, how many interrupts will be created per second?

Options:

100

1,000

10,000

100,000

Answer

Questions # 19:

A virtual machine is needed once per week to run reports, but the rest of the time it Is idling. What method will unallocate resources such as CPU and memory, while keeping the virtual machine intact and ready for rapid re-deployment?

Options:

Pause the virtual machine when not in use, then unpause it when needed.

Suspend the virtual machine when not in use, then resume it when needed.

Live migrate the virtual machine to a spareserver when not in use, then live migrate it back when needed.

Power off the virtual machine when not in use, then power it back up when needed.

Answer

Questions # 20:

You have guest VM on an Oracle VM server that cannot communicate with the internet. The guest UUID is 12345. Which two commands on Oracle VM server will have troubleshooting this issue?