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Oracle 1Z0-821

Oracle Solaris 11 System Administration

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    Oracle 1Z0-821 (Oracle Solaris 11 System Administration)

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1Z0-821 Questions and Answers

1Z0-821


QUESTION: 226

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?


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

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

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

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

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

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


Answer: A, B, F


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: 227

You created a new zpool. Now you need to migrate the existing ZFS file system from pool1/prod to pool2/prod. You have these requirements: Users must have access to the data during the migration, so you cannot shutdown the file system while the migration takes place. Because you want to copy the data as quickly as possible, you need to increase the server resources devoted to the ZFS migration.


Which method would you use to modify the ZFS shadow migration daemon defaults to increase the concurrency and overall speed of migration?


  1. Svccfg - s filesystem/shadowd:default setprop config_params/shadow_threads=integer: 16 end svcadm refresh filesystem/shadowd: default

  2. Specify the -b <blocksize> option with the zfs create command and increase the value of <blocksize>

  3. Use the -o -volblocksize=<blocksize>option with the zfs create command and increase the value of the default <blocksize>.

  4. Svccfg -s filesystem/zfs: default setprop config_params/shadow_threads = integer: 16 end svcadm refresh filesystem/zfs:default


Answer: A


Explanation:

shadowd is a daemon that provides background worker threads to migrate data for a shadow migration. A shadow migration gradually moves data from a source file system into a new “shadow” file system. Users can access and change their data within the shadow file system while migration is occurring. The shadowd service is managed by the service management facility, smf(5). Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The service's status can be queried using the svcs(1) command. The svccfg(1M) command can be used to manage the following parameter related to

shadowd: config_params/shadow_threads Note: Oracle Solaris 11: In this release,

you can migrate data from an old file system to a new file system while simultaneously allowing access and modification of the new file system during the migration process. Setting the shadow property on a new ZFS file system triggers the migration of the older data. The shadow property can be set to migrate data from the local system or a remote system with either of the following values: file:///path nfs://host:path


Reference:

man shadowd


QUESTION: 228

The current ZFS configuration on server is:


You need to backup the /data file system while the file system is active. Select the option that creates a full backup of the /data file system and stores the backup on server in the pool named backup.


  1. Mount -F nfs system: /backup / mnt zfs snapshot pool/data@monday>/mnt/Monday

  2. Mount -F nfs systemB: /backup/mnt zfs snapshot pool1/data@Monday zfs clone pool1/data@monday/mnt/Monday

  3. Zfs send pool1/data@Monday | ssh system zfs recv backup/monday

  4. Zfs snapshot pool1/data@Monday | ssh system zfs recv backup/monday


Answer: D


Explanation:

Example (assuming there exists a snapshot ‘tank/test@1). Full backup Now let’s do a full initial backup from the ‘tank/test@1 snapshot: # zfs send tank/test@1 | zfs receive tank/testback


QUESTION: 229

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?


  1. 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


  2. 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.

  3. 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.

  4. 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

  5. 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.


Answer: D


Explanation:

You can add a ZFS file system to a non-global zone by using the zonecfg command's add fs subcommand. In the following example, a ZFS file system is added to a non-global zone by a global zone administrator from the global zone: # zonecfg -z zion zonecfg:zion> add fs zonecfg:zion:f> set type=zfs

zonecfg:zion:fs> set special=tank/zone/zion zonecfg:zion:fs> set dir=/export/shared

zonecfg:zion:fs> end


Reference:

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


QUESTION: 230

A change in your company’s security policy now requires an audit trial of all administrators assuming the sysadm role, capturing: -Executed commands, including options -Logins and logouts There are two command necessary to accomplish this change. One is a rolemod command. What is the other?


  1. auditconfig set policy=argv


  2. auditconfig -setpolicy +argv

  3. auditconfig -setflags lo, ex sysadm

  4. auditconfig set flags=lo, ex sysadm


Answer: B


Explanation:

Audit Significant Events in Addition to Login/Logout (see step 2 below) Use this procedure to audit administrative commands, attempts to invade the system, and other significant events as specified by your site security policy. For all users and roles, add the AUE_PFEXEC audit event to their preselection mask. # usermod -K audit_flags=lo,ps:no username # rolemod -K audit_flags=lo,ps:no rolename # auditconfig -setpolicy +argv 3- Record the environment in which audited commands are executed. # auditconfig -setpolicy +arge Note: [-t] -setpolicy [+|-

]policy_flag[,policy_flag ...] Set the kernel audit policy. A policy policy_flag is literal strings that denotes an audit policy. A prefix of + adds the policies specified to the current audit policies. A prefix of - removes the policies specified from the current audit policies. No policies can be set from a local zone unless the perzone policy is first set from the global zone.


Reference:

Oracle Solaris 11 Security Guidelines, Audit Significant Events in Addition to Login/Logout


QUESTION: 231

Your task is to convert a JumpStart sysidcfg file to an Automated Installer (AI) sc_profile.xml file, using js2ai. Select two unsupported items that will require changes.


  1. terminal = zterms

  2. name_service-NTS+

  3. timezone=US/pacific

  4. system_locale=en_US

  5. network_interface=PRIMARY

  6. root_password=rJmvLUXM10cU


Answer: A, D


Explanation:

A: terminal The js2ai tool does not perform any translation. Make sure the terminal type speciied in the sysidcfg ile is supported in Oracle Solaris 11. D: system_locale The js2ai tool does not perform any translation. Make sure the locale specified in the sysidcfg ile is supported in Oracle Solaris 11.


Reference:

Overview of Installation Options, Comparing sysidcfg File Keywords to SC Proile Directives


QUESTION: 232

The COMSTAR framework provides support for the iSCSI protocol. Select three options that correctly describe the COMSTAR framework.


  1. iSCSI devices can be used as dump devices.

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

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

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

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


Answer: B, D, E


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: 233

View the Exhibit to inspect the boot environment Information displayed within a non global zone on your system.


Which two options describe the solaris-1 boot environment?


  1. The solaris-1 boot environment is not bootable.

  2. The solaris-1 boot environment is incomplete.

  3. The solaris-1 boot environment was created automatically when the non global zone was created.

  4. The solaris-1 boot environment was created in the non-global zone using the beadm create command.

  5. The solaris-1 boot environment is associated with a non active global zone boot environment.


Answer: A, D


Explanation:

A: The – of the Active Column indicates that this boot environment is inactive, and hence not bootable. Note: The values for the Active column are as follows: R – Active on reboot. N – Active now. NR – Active now and active on reboot. “-” – Inactive. “!” – Unbootable boot environments in a non-global zone are represented by an exclamation point. D: beadm create Creates a new boot environment name, beName. Note: beadm list Lists information about the existing boot environment, which is be Name, or lists information for all boot environments if be Name is not provided. Note: Using beadm Utility (Tasks) You can use the beadm utility to create and manage snapshots and clones of your boot environments. Note the following distinctions relevant to boot environment administration: A snapshot is a read-only image of a dataset or boot environment at a given point in time. A snapshot is not bootable. A boot environment is a bootable Oracle Solaris


environment, consisting of a root dataset and, optionally, other datasets mounted underneath it. Exactly one boot environment can be active at a time. A clone of a boot environment is created by copying another boot environment. A clone is bootable.


Reference:

Creating and Administering Oracle Solaris 11 Boot Environments


QUESTION: 234

You are using AI to install a new system. You have added to following information to the AI manifest: <configuration type= “zone” name= “dbzone” source = “ sysA.example.com/zone_cfg/zone.cfg”/> Which statement is true with regard to the zone.cfg?


  1. The zone.cfg file is text file in a zonecfg export format.

  2. The zone.cfg file is an AI manifest that specifies how the zone is to be installed.

  3. The zone.cfg file is an xml file in a form suitable for use as a command file for the zonecfg command.

  4. The zone.cfg file is an SC profile with keywords that are specific for configuring a as part of the installation process.

  5. It is am xml configuration file from the /etc/zone directory. It will be used as a profile for the zone. It specifies the zonename, zonepath, and other zonecfg parameters.


Answer: B


Explanation:

The configuration element supports non-global zone configurations. When installing a global zone system, the zone configurations specified in the AI manifest are used to install non-global zones onto the system after the global zone has been installed The configuration element has the following attributes: type The type of configuration to install. The only type supported by AI is zone. name A name given to the configuration. This name must be unique across all configuration elements in an AI manifest. For configurations of type zone, this name is also used as the zonename for he zone. Source The location from which AI downloads the configuration file for this configuration element. The value can be an HTTP or FILE URI specification. For configurations of type zone, this value should point to a zone configuration file as produced from the zonecfg export command.

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