Oracle Oracle Certifications 1Z0-820 Questions & Answers

• Question 81:

  Select the five tasks that need to be performed on the Automated Installer (AI) install server before setting up the client.

  A. Create a local IPS repository on the AI Install server and start the repository server service, the publisher origin to the repository file.

  B. Set up a IP address on the AI install server.

  C. The DHCP server must be enabled on the install server and must provide the DHCP service for the clients.

  D. DHCP must be available on the network for the Install server and the clients, but the install server does not need to be the DHCP server.

  E. Download the AI boot image. The image must be the same version as the Oracle Solaris OS that you plan to install on the client.

  F. Download the text install image into the IPS repository.

  G. Install the AI installation tools.

  H. Create the AI install service. Specify the path to the AI network boot image ISO file and the path where the AI net image ISO file should be unpacked.

  I. Create the AI install service. Specify the path to the AI network boot image ISO file and the path to the IPS repository.

  Correct Answer: BDFGI

  Explanation: B: Configure the AI install server to use a static IP address and default route.

  D: The create-service command can set up DHCP on the AI install server. If you want to set up a separate

  DHCP server or configure an existing DHCP server for use with AI. The DHCP server must be able to

  provide DNS information to the systems to be installed.

  E: An automated installation of a client over the network consists of the following high-level steps:

  1.

  The client system boots over the network and gets its network configuration and the location of the

  install server from the DHCP server.

  2.

  The install server provides a boot image to the client.

  3.

  Characteristics of the client determine which installation instructions and which system configuration

  instructions are used to install the client.

  4.

  The Oracle Solaris 11 OS is installed on the client, pulling packages from the package repository

  specified by the installation instructions in the AI install service.

  G: Install the AI tool set.

  Use the installadm create-service command to create an AI install service. Give the service a meaningful

  name, and specify the path where you want the service created. Specify the source of the network boot

  image (net image) package or ISO file.

  installadm create-service [-n svcname] [-s FMRI_or_ISO] [-d imagepath]

  -d imagepath The imagepath is the location of the new install service. The install-image/solaris-auto- install package is installed to this location, or the specified ISO file is expanded at this location.

  Reference: Installing Oracle Solaris 11 Systems, Create an AI Install Service

• Question 82:

  You are troubleshooting the Oracle Solaris11 Automated Installer (AI), which is not connecting with the IPS software repository.

  Which three steps will help determine the cause of DNS name resolution failure?

  A. Verify the contents of /etc/resolve.conf.

  B. Run netstat -nr to verify the routing to the DNS server.

  C. Ping the IP address of the IPS server to verify connectivity.

  D. On the installation server, verify that the menu.1st file for the client points to a valid boot arc hive.

  E. Run df -k to verify that the boot directory containing the boot archive is loopback mounted under /etc/ netboot.

  F. Run the command /sbin/dhcpinfo DNSserv to ensure that the DHCP server providing the DNS server information.

  Correct Answer: ABF

  Explanation: Check DNS

  *

  (A) Check whether DNS is configured on your client by verifying that a non-empty /etc/resolv.conf file exists.

  *

  (F) If /etc/resolv.conf does not exist or is empty, check that your DHCP server is providing DNS server information to the client: # /sbin/dhcpinfo DNSserv If this command returns nothing, the DHCP server is not set up to provide DNS server information to the client. Contact your DHCP administrator to correct this problem.

  *

  (B) If an /etc/resolv.conf file exists and is properly configured, check for the following possible problems and contact your system administrator for resolution:

  ** The DNS server might not be resolving your IPS repository server name. ** No default route to reach the DNS server exists.

  Reference: Installing Oracle Solaris 11 Systems, Client Installation Fails

• Question 83:

  You are creating a non-global zone on your system.

  Which option assigns a zpool to a non-global zone, and gives the zone administrator permission to create zfs file system in that zpool?

  A. While creating the non-global zone, make the following entry: add device set match=/dev/rdsk/c4t0d0 end Boot the zone and log in the zone as root. Create the zpool:

  zpool create pool2 c4t0d0

  In the non-global zone, root can now create ZFS file system in the pool2 zpool

  B. In the global zone, create the zpool: global# zpool create pool2 c4t1d0 While creating the no-global zone, make the following entry: add dataset set name=pool2 end add fs set dir=pool1 set special=pool1 set type=zfspool1 end Boot the zone, log in the zone as root, and create the zfs file system in the pool2 zpool.

  C. In the global zone, create the zpool: global#zpool create pool2 c4t1d0 While creating the global zone, make the following entry: add dataset set name=pool2 end Boot the zone, log in to the zone as root and create the zfs file systems in the pool2 zpool.

  D. In the global zone, create the zpool and the ZFS file systems that you want to use in the non-global zone: global#zpool create pool2 c4t1d0 global#zfs create pool2/data While creating the non-global zone, make the following entry for each ZFS file system that you want to make available in the zone: add fs set dir=/data set special=pool2/data set type=zfs end

  E. Create the zpool in the global zone: global#zpool create pool2 c4t1d0 Boot the non-global zone, log in to the zone as root, and issue this command to delegate ZFS permissions to root: non-global zone# zfs allow root create , destroy, mount pool2 Log in to the non-global zone create ZFS file systems in the pool2 zpool.

  Correct Answer: C

  Reference: Oracle Solaris ZFS Administration Guide, Adding ZFS File Systems to a Non- Global Zone

• Question 84:

  View the Exhibit, and review the zpool and ZFS configuration information from your system

  

  The application development team requested an up-to-date copy of the data from the /prod_data file system. You decide to give the team one of the disk drives containing the data by breaking the mirror, removing the disk c4t1d0 and mounting c4t1 dO under a new mount point named /dev_data. Identify the correct procedure for breaking the mirror, removing c4t1d0. and making the data on that drive accessible under the /dev_data mount point

  A. zfs destroy pooh /prod_data zfs create pool1/prod_data c4t1d0 zfs create pool1/dev_data c4t1d0

  B. zfssplitpool1/prod_data zfs mount -F zfs pool1/dev_data c4t1d0

  C. zpool split pooll pool2 zpool import pool2 zfs set mountpoint=/dev_data pool2/prod_data

  D. zpool split pool1/prod_data -n pool2/dev_data zpool import -o mountpoint=/dev_data pool2/dev_data 3 e zfs split pool1/prod_data -n pool2/dev_data zfs set mountpoint=/dev_data pool2/dev_data

  Correct Answer: C

• Question 85:

  You upgraded your server to Oracle bolans 11 and you imported a zpool(pooll) that was created in bolaris

  10. You need to create an encrypted ZFS file system in pooll, but first you need to make sure that your server supports ZFS encryption.

  Which four statements are true for support of ZFS encryption?

  A. The encrypted file system must have been created in Oracle Solaris 11. To encrypt a ZFS file system from a previous version of Solaris, upgrade the zpool and create a new encrypted ZFS file system in that zpool Finally, move or copy the data from the existing ZFS file system into the new encrypted ZFS file system.

  B. if you plan to create an encrypted file system in an existing zpool, the zpool must be upgraded to ZFS version 30, minimum.

  C. ZFS encryption is integrated with the ZFS command set and no additional packages need to be installed.

  D. ZFS encryption requires that the ZFS Dataset Encryption package be installed. E If you plan to create an encrypted file system in an existing zpool, the zpool must be upgraded to ZFS version 21, minimum. D f Encryption is supported at the pool or dataset (file system) level

  E. Encryption is supported at the pool level only and every file system in the pool will be encrypted.

  F. Encryption is supported at the pool level only and every file system in the pool will be encrypted.

  G. You cannot create an encrypted file system in a zpool that was created prior to Oracle Solaris 11. Create a new zpool in Solaris 11, create an encrypted ZFS file system in the new zpool, and move or copy the data from the existing file system into the new encrypted file system.

  Correct Answer: ABCF

• Question 86:

  A non-global zone named testzone is currently running.

  Which option would you choose to dynamically set the CPU shares for the zone to two shares?

  A. While logged in to the global zone, enter: prctl -n zone.cpu-shares -v 2 -r -i zone testzone

  B. While logged in to the global zone, enter: zonecfg -z testzone add rctl set name=zone cpu-shares setvalue=(priv=privilegedJimit=2,action=none)

  C. While logged in to the global zone, enter: prctl -n 2 zone cpu-shares -i zone testzone

  D. While logged in to the global zone, enter: zonecfg -z testzone add rctl set name-zone cpu-shares set value=2

  E. While logged in to testzone, enter: prctl -n zone.cpu-shares -v 2 -r -i zone testzone

  Correct Answer: D

• Question 87:

  You need to set up a local package repository to serve 75 client systems. Multiple clients will be accessing the package repository concurrently and you need to ensure that the local repository performs very well under this heavy load, especially during package-intensive operations. Which option would ensure the best performance of the repository during package-intensive operations by multiple clients?

  A. Set up multipathing on the package repository server to distribute the network load across multiple network interfaces.

  B. Deploy a second instance of the package repository server to run as a read-writable mirror.

  C. Deploy a second instance of the package repository server to run as a read-only mirror.

  D. Deploy a second instance of the package repository server to run as a clone of the primary repository server

  E. Deploy a package repository locally on each client.

  Correct Answer: C

• Question 88:

  The rctladm command reports the following:

  # rctladm |grep task.max.lwps task.max-lwps syslog=notice [ count 1

  Which of the following correctly describes the system configuration?

  A. A message will be logged with syslogd when the number of notice messages generated by the resource control threshold meets or exceeds the value specified with [count]

  B. A message will be logged with sysloqd when the number of violations generated by the resource control threshold meets or exceeds the value specified with [count].

  C. The global resource control monitoring for the task.max-lwps resource control has been enabled and syslog messaging for that resource control has been set to notice. However, because the [count] value has not been specified, there is no threshold set for the resource to monitor. The configuration to monitor the task.max-lwps resource control is incomplete.

  D. The global resource control monitoring for the task.max-lwps resource control has been enabled, syslog messaging for that resource control has been set to notice.

  Correct Answer: D

• Question 89:

  The COMSTAR framework provides support for the iSCSI protocol.

  Select three options that correctly describe the COMSTAR framework.

  A. iSCSI devices can be used as dump devices.

  B. SCSI commands are carried over IP networks and enable you to mount disk devices from across the network onto your local system.

  C. Large amounts of data can be transferred over an IP network with very little network degradation.

  D. COMSTAR allows you to convert any Solaris11 host into a SCSI target device that can be accessed over a storage network.

  E. One IP port can handle multiple ISCSI target devices.

  Correct Answer: BDE

  Explanation: B: By carrying SCSI commands over IP networks, the iSCSI protocol enables you to access block devices from across the network as if they were connected to the local system. COMSTAR provides an easier way to manage these iSCSI target devices.

  D: Common Multiprotocol SCSI TARget, or COMSTAR, a software framework that enables you to convert any Oracle Solaris 11 host into a SCSI target device that can be accessed over a storage network by initiator hosts.

  E: One IP port can handle multiple iSCSI target devices.

  Reference: Oracle Solaris Administration: Devices and File Systems, Configuring Storage Devices With COMSTAR

• Question 90:

  You are configuring NFS on a server. Select the two statements that are true.

  A. Resources listed in /etc/dfs/dfstab are automatically shared on boot up.

  B. A directory cannot be shared if a subdirectory below it is already shared.

  C. Renaming a share created with the zfs set share command is not supported.

  D. NFS and SMB protocols cannot be used simultaneously to share the same directory.

  Correct Answer: AC

  Explanation: A: ZFS can automatically share file systems by setting the sharenfs property. Using this property, you do not have to modify the /etc/dfs/dfstab file when a new file system is shared. The sharenfs property is a comma-separated list of options to pass to the share command. The value on is an alias for the default share options, which provides read/write permissions to anyone. The value off indicates that the file system is not managed by ZFS and can be shared through traditional means, such as the /etc/dfs/ dfstab file. All file systems whose sharenfs property is not off are shared during boot.