1z0-590 Sample Questions Answers

xm 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.

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

brctl 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.

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

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

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.

The network type has not been changed from Paravirtualized to Fully Virtualized (the ioemu driver is not specified in the vm.cfg).

After install thePV drivers, the MAC address of the network interfaces must be changed in vm.cfg.

After installing the PV drivers, the bridge setting in vm.cfg is lost and must be reset.

The network type has not been changed from Fully Virtualized to Paravirtualized(the netfront driver is not specified in vm.cfg).

xm list

oswatcher installed in the guests

top

xm top

cat /proc/cpuinfo

a System.img file representing the operating system

optional image files as specified in the command

a README file with product name, version number and build timestamp

a vm.cfg file pointing to the created images, along with specified memory and CPU information

a tar.gz file with all of the images, README and vm.cfgfiles compressed

Implementing on physical hardware virtualization using the P2V utilities.

Hardwarevirtualization XEN HVM.

Hypervisor virtualization.

Hardware virtualization with Para-virtualized hardware drivers.

OVM dynamic virtualization.

The virtual machine is hardware virtualized, not paravirtualized, and shared virtual disks are not visible to hardwarevirtualized guests.

The user needs approval from the Administrator to see the shared disk, even though he is in the Development group.

The Administrator needs to make the shared virtual disk public before it can be seen by members of the Developmentgroup.

The user's virtual machine is not in the Development group.

The ISO images should each be placed in their ownsubdirectory under/OVS/iso_pool.

The ISO images should be joined into one larger ISO image using the M75cat command, then placed under a subdirectory of/OVS/iso_pool.

The ISO images should all be placed under/OVS/iso_pool, using distinct names to differentiate them.

The ISO images should be placed in one subdirectory under/OVS/seed_pool, named according to the vendor and distribution name.

The ISO images should be placed in one subdirectory under/OVS/iso_pool, named according to the vendor and distribution name.

All components of Oracle virtual assembly builder are accessible from a tab in OracleVM manager.

Oracle virtual assembly builder manage the full life cycle of assemblies including introspection, configuration, preparation and development.

Standard resources (such as mail, printer, identity management etc.) all servers must be manually configured of the e-submit development is complete.

Assembles are comprised of interrelated software appliances along with metadata catalog that describes their relationship.

Assemblies promote rapid development, lower operation cost and simple implementation of the best practices.

xm shutdown

xm reset

xm destroy

xm delete

xm pause

esx –a

ifconfig –a –d bridges

netstat list

xen bridge display

prctl show

ocfs2

o2cb

ovs-agent

ovsrepositories

Use the repos.py command with the --new option, along with either a device path or an nfs path.

Use the repos.py command with the --new option, along with the UUID assigned to the repository.

Use the repos.py command with the--newoption, along with the UUID assigned to the repository and a device path.

Use the repos.py command with the path. —root option, along with either a device path or an nfs path.

Use the repos.py command with the--root option, along with the UUID assigned to the repository.

The guest uses netfront and dom0 uses netbk.

The guest uses netbk and dom0 uses netfront.

The guest uses netfront and dom0 uses native drivers.

Both the guest and dom0 uses native frivers.

Both the guest and dom0 uses emulated drivers.

df –h

dmsetup list

multipath –ll

services devmapd status

mdadm –Q

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.

iso_pool

publish_pool

running_pool

seed_pool

sharedDisk

ovs-agent

Use xm console to attach to the guest while it is booting and look for the specific error.

Run xm dmesg to see hardware errors in the guest.

Run xm info to see the list of devices being attachedto the virtual machine.

xm block-attach the disk to another virtual machine to inspect the file system and check module loading issues.

Each server in the pool must have a connection to the sharedstorage, using NFS, ISCSI or a SAN Either ext3 or OCFS2 should be used to format the shared file system.

Each server in the pool must have a connection to the shared storage, using NFS, (SCSI or a SAN. Either gfs or OCFS2 should be used to format the shared file system.

t least one server in the pool must have a connection to the shared storage, using iSCSI or a SAN. Either ext3 or OCFS2 should be used to format the shared file system.

Each server in the pool must have a connection to the shared storage, using iSCSI or a SAN. Only OCFS2 should be used to format the shared file system when using iSCSI or a SAN.

Each server in the pool must have a connection to the shared storage, using NFS, iSCSI or a SAN. Only OCFS2 should be used to format the shared file system when using iSCSI or a SAN.

A command line utility to customize and create a system image.

Microsoft template system image.

Oracle Linux template system image.

Red Hat Linux template system image.

The predefined YUM repository of customized RPMs.

Script used to configure and clean up the template.

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

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

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

Five. One for each virtual machine.

None. QEMU-DM background processes are not used for hardware virtualized guests.

In the import directory of the shared storage repository.

In the Server pool repository.

On another mounted file system accessible to Oracle VM manager.

On a web server supporting HTTP HTTPS orFTP protocol.

In any directory on the Oracle VM manager host system.

/var/log/ovs-agent/ovs_performance.log

/var/log/ovs-agent/ovs_operation.log

/var/log/xen/xend.log

/var/log/xen/xend-debug.log

/OVS3

/var/ovs/mount/root

/var/ovs/mount/OVSROOT

/OVSROOT

/var/OVS

/opt/ovs

The second repository will become a mirror of the first.

I/O may be distributed across the repositories but actually providing the better performance.

Multiple storage repositories can reduce the overall impact of storage device malfunctioning.

You must allow Oracle to decide where to place guest and virtual disks.

There is a chance that space will be over allocated, resulting in wasted space.

Both repositories must be of same type (NFS, iSCSI or fiber channel).

Oracle Validated Configurations provide testing of a "completecomponent stack" andrecommendations on versions, settings, and fixes for the particular stack (software, hardware, and storage) based on running workloads in Oracle's or a partner's test lab.

Oracle Validated Configurations are a mandatory step in Oracle's certification process.

Oracle Validated Configurations are working samples of hardware and software configurations in an Oracle VM environment.

All validated configurations must be run in Oracle's lab.

Oracle Validated Configurations are potential examples of hardware and software configurations whose specifications are validated by Oracle.

vnclisten = '0.0.0.0'

pae =1

builder=’hvm’

serial=’pty’

A second utility server can providea backup in case the main utility server dies.

Only one utility server is allowed per server pool.

A second utility server can be configured to switch to a Server Pool Master role if no more ServerPool Masters are available.

A second utility server can help load balance high I/O loads.

A second utility server is only needed if HA is turned on. In that case, it can provide a backup in case the main utility server dies

HD (IDE)

SD (SCSI)

XVD

RAW

Linux command to customize the JeOS images and create the template

JeOS license file

Enterprise Linux JeOS images to use for the System.img

Microsoft Windows JeOS images to use for the System.img

Template reconfiguration scripts

Red Hat EnterpriseLinux JeOS images to use for the System.img

The iSCSI LUN must be formatted with the OCFS2 file system.

Theiscsi-adm service must be installed and running.

The iSCSI daemon must be installed and running.

Multipathing must be configured and the multipath daemon must be running.

The iSCSI LUNs must be mapped to local devices.

Each server in the pool must have the exact same model of processor.

Each server in the pool must have the same amount ofmemory.

Each server in the pool must have similar processors, specifically vendor, family and steppings.

Each server in the pool must be connected to shared storage.

Each server in the pool must be large enough to support the largest virtual machine in the pool

Oracle AIA (Application Integration Architecture)

Oracle Validated Configuration

Oracle Support

Oracle ACS (Advanced Customer Services)

Oracle MetaLink

running_pool

publlsh_pool

seed_pool

iso_pool

sharedDisk

netfront

netback

blkfront

blobk

QEMU

The Oracle VM agent dispatchesemail and other notifications to the administrator when it shows server is down or malfunctioning.

The Oracle VM agent is using exclusively by Oracle Enterprise manager to manage and monitor each Oracle VM Server.

The Oracle VM agent is not a process but is the collection of all devices drivers that support para-virtualized virtual machines.

Oracle VM agent is a process that receive process management requests and provide you the notification & configuration data toward Oracle VM manager.

Oracle VM agent is used exclusively for communication between servers in a server pool and the components by which the Oracle VM master is selected.

It connects to a pool of virtual machines with a RDP service.

It connectsto any virtual or any physical machine with a RDP service.

It connects to any physical machine regardless of operating system.

It connects to any virtual or any physical machine with a VNC service.

/etc/ocfs2/cluster.conf

/etc/sysconfig/ocfs2

/etc/sysconfig/cluster.conf

/etc/sysconfig/o2cb

A file name in the storage repository of a virtual disk image accessed by the virtual machine.

The amount of memory allocated to virtual machine.

CPU priority of the virtual machine.

The processor clock speed for the virtual machine.

The process cap % limiting virtual machine processor location.

Boot device order for thevirtual machine.

The NIC bonding configuration for the virtual machine.