Oracle Oracle Certifications 1Z0-590 Questions & Answers

• Question 41:

  After installing the PV drivers into a Windows guest, the networking fails on reboot. What is likely wrong?

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

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

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

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

  Correct Answer: D

  Oracle® VM Windows Paravirtual Drivers Installation Guide Release 2.0 for Microsoft Windows E15298-02 May 2010

  6.4 Network Devices May Fail

  If you install the Windows PV drivers into a guest with the vif type set to ioemu in the guest configuration

  file (vm.cfg), the network device(s) may fail. The Windows Device Manager displays an error code 10 and

  an exclamation point (!) to show the network driver cannot be started.

  This is caused by the network type being set incorrectly in the guest configuration file.

  The network card type can be set three ways:

  type=ioemu: Network card is available in QEMU mode only. type=netfront: Network card is available in

  paravirtualized mode. No type entry: Network card is available in both QEMU and paravirtualized modes.

  Workaround:

  The issue is only applicable to Oracle VM Server 2.1.5 and does not apply to Oracle VM Server 2.2 or

  later.

  If this issue occurs, change the network type from ioemu to netfront in the guest configuration file.

  Alternatively, delete the network type entry. You can make this change using Oracle VM Manager, or

  manually. To change the configuration manually:

  Shut down the guest.

  1.

  Edit the guest configuration file (vm.cfg) and change the type=ioemu entry to 2.

  type=netfront, or delete the entry.

  Restart the guest.

  3.

  The network driver is started.

• Question 42:

  How can you tell that a virtual network interface in a virtual machine is set up to use Paravirtualization?

  A. The vm.cfg file will have a xenbrX = [type=netfront] setting.

  B. The vm.cfg file will have a vif = [type=netpv] setting.

  C. The vm.cfg file will have a vif = [type=netfront] setting.

  D. The vm.cfg file will have a xenbrX ttype=pvfront] setting.

  E. The vm.cfg file will have a xenbrX = [type=netpv] setting.

  Correct Answer: C

• Question 43:

  What two configuration files are associated with an OCFS2 cluster?

  A. /etc/ocfs2/cluster.conf

  B. /etc/sysconfig/ocfs2

  C. /etc/sysconfig/cluster.conf

  D. /etc/sysconfig/o2cb

  Correct Answer: AD

  D: # ls -la /etc/sysconfig/o2cb -rw-r--r-- 1 root root 873 Eyl 6 10:24 /etc/sysconfig/o2cb

  A: root@ovm-node-dell ~]# ls -la /etc/ocfs2/cluster.conf -rw------- 1 root root 169 Eyl 6 10:24 /etc/ocfs2/cluster.conf [root@ovm-node-dell ~]# cat /etc/ocfs2/ cluster.conf node: ip_port = 7777 ip_address = 172.16.0.10 number = 0 name = ovm-node-dell cluster = ocfs2

  cluster: node_count = 1 name = ocfs2

• Question 44:

  A server with 16GB of RAM is only showing 8GB available after boot, but before running any virtual machines. What method will best find the issue?

  A. Look in /var/log/xen/xend.log for hardware-related messages.

  B. Use xm dmesg to see messages logged during the booting of the Xen hypervisor.

  C. Use dmesg to see messages logged during the booting of dom0.

  D. Look in /var/log/xen/xend-debug.log for hardware-related messages.

  Correct Answer: B

• Question 45:

  There is an issue booting into a virtual machine. The log files show that there is an issue during the Linux boot process of the guest. What two methods will best help determine the problem?

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

  B. Run xm dmesg to see hardware errors in the guest.

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

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

  Correct Answer: AB

• Question 46:

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

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

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

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

  D. Only memory is migrated.

  Correct Answer: A

  Explanation:

  live migration - is similar to warm migration, except that the guest is not suspended 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. A brief pause is used at the end to transmit residual changed state. This method is typical for virtual machine systems that provide live guest migration.

• Question 47:

  What command(s) will create a new 10 GB virtual disk named Apps, and attach it to a virtual machine named Test?

  A. sd new -d 10240 -n Apps vm sd attach -n Test -d Apps

  B. sd new -d 10240 -n Apps sd reg -n Apps vm sd attach -n Test -d Apps

  C. vm disk add -n Test -d Apps -S 10240

  D. vm sd attach -n Test -d Apps -S 10240

  E. vm disk add -n Test -d Apps -S 10240 vm sd attach -n Test -d Apps

  Correct Answer: E

• Question 48:

  Which three attributes of an existing virtual disk can be changed using Oracle VM Manager?

  A. Virtual Disk N

  B. Virtual Disk Size

  C. Hard Drive Type

  D. QoS Enabled

  E. Priority Class

  Correct Answer: CDE

• Question 49:

  Which two statements describe Oracle Validated Configurations?

  A. Oracle Validated Configurations provide testing of a "complete component 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.

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

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

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

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

  Correct Answer: E

• Question 50:

  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?

  A. Memory Size

  B. Server Name

  C. VNC Port

  D. Server Pool Name

  E. Owner

  F. Number of Virtual CPUs

  Correct Answer: BC

  Explanation: If you properly shutdown the virtual machine then you will not get the 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 the machine is not up there so how will you get the vnc port for that

  machine :D?

  Correct answer is B and C.