Oracle 1Z0-821 Online Practice Questions and Exam Preparation

Oracle 1Z0-821 Online Questions & Answers

• Question 161:

  What is the result of executing the following command? svcs -d svc:/network/ssh:default

  A. disables the svc:/network/ssh:default service
  B. displays the services that svc: /network/ssh:default is dependent on
  C. displays the services that are dependent on the svc: /network/ssh:default service
  D. deletes the svc: /network/ssh:default service
  B. displays the services that svc: /network/ssh:default is dependent on

  ---

  The svcs command displays information about service instances as recorded in the service configuration repository. -d Lists the services or service instances upon which the given service instances depend.

• Question 162:

  Your mentor suggests using the dladm rename-link command to rename the network datalinks. What are the two advantages of following this advice?

  A. It can clarify which network interface has what purpose.
  B. It can simplify specifying the network interface with the dladm modify-aggr command.
  C. It can simplify specifying the network interface with the dladm modify-bridge command.
  D. It can simplify IP filter rule changes if the network interface is replaced with a different type.
  E. It can prevent accidental deletion of the network interface with the dladm delete-phys command.
  F. It can prevent accidental deletion of the network interface configuration with the ipadm delete-addr command.
  A. It can clarify which network interface has what purpose.
  D. It can simplify IP filter rule changes if the network interface is replaced with a different type.

  ---

  Note: dladm rename-link [-R root-dir] link new-link

  Rename link to new-link. This is used to give a link a meaningful name, or to associate existing link configuration such as link properties of a removed device with a new device.

• Question 163:

  Which option would you choose to display the kernel revision level for your operating system?

  A. cat. /etc/release
  B. uname -a
  C. pkg info kernel
  D. banner (issued from the OpenBoot Prom)
  E. cat /etc/motd
  B. uname -a

• Question 164:

  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:

  1.

  Users must have access to the data during the migration, so you cannot shutdown the file system while the migration takes place.

  2.

  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?

  A. Svccfg - s filesystem/shadowd:defaultsetprop config_params/shadow_threads=integer: 16endsvcadm refresh filesystem/shadowd: default
  B. Specify the -b option with the zfs create command and increase the value of
  C. Use the -o -volblocksize=option with the zfs create command and increase the value of the default .
  D. Svccfg -s filesystem/zfs: defaultsetprop config_params/shadow_threads = integer: 16endsvcadm refresh filesystem/zfs:default
  A. Svccfg - s filesystem/shadowd:defaultsetprop config_params/shadow_threads=integer: 16endsvcadm refresh filesystem/shadowd: default

  ---

  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

• Question 165:

  You are executing this command in the default shell:

  sleep 5000 and

  The system displays a number. This value is______.

  A. the priority of the /usr/bin/sleep process
  B. the process ID of the /usr/bin/sleep process
  C. the process ID of the shell spawned to execute /usr/bin/sleep
  D. the process group ID that includes the /usr/bin/sleep process
  E. the amount of memory allocated to the /usr/bin/sleep process
  F. the current number of instances of the /usr/bin/sleep process
  C. the process ID of the shell spawned to execute /usr/bin/sleep

  ---

  If a command is terminated by the control operator `and', the shell executes the command asynchronously in a subshell. This is known as executing the command in the background. The shell does not wait for the command to finish, and the return status is 0 (true).

• Question 166:

  In a default standalone installation of Oracle Solaris 11, what is the default minimum length in characters of a user password, and where is the minimum password length defined?

  A. Default minimum length is 8, and is defined in /etc/default/password.
  B. Default minimum length is 6, and is defined in /etc/default/password.
  C. Default minimum length is 8, and is defined in /etc/shadow.
  D. Default minimum length is 6, and is defined in /etc/shadow.
  E. Default minimum length is 8, and is defined in /usr/sadm/defadduser.
  F. Default minimum length is 6, and is defined in /usr/sadm/defadduser.
  B. Default minimum length is 6, and is defined in /etc/default/password.

  ---

  By default, the passwd command assumes a minimum length of six characters. You can use the PASSLENGTH default in the /etc/defaults/passwd files to change that by setting the minimum number of characters that a user's password must contain to some other number.

• Question 167:

  You have installed the SMF notification framework to monitor services. Which command is used to set up the notifications for a particular service?

  A. svccfg
  B. svcadm
  C. setnotify
  D. smtp-notify
  A. svccfg

  ---

  How to Set Up Email Notification of SMF Transition Events This procedure causes the system to generate an email notification each time one of the services or a selected service has a change in state. You can choose to use either SMTP or SNMP. Normally, you would only select SNMP if you already have SNMP configured for some other reason.

  By default, SNMP traps are sent on maintenance transitions. If you use SNMP for monitoring, you can configure additional traps for other state transitions.

  1. Become an administrator or assume a role that includes the Service Management rights profile.'

  2. Set notification parameters.

  Example 1:

  The following command creates a notification that sends email when transactions go into the maintenance state.

  # /usr/sbin/svccfg setnotify -g maintenance mailto:[email protected]

  Example 2:

  The following command creates a notification that sends email when the switch service goes into the online state.

  # /usr/sbin/svccfg -s svc:/system/name-service/switch:default setnotify to-online \ mailto:[email protected]

  Note: The svccfg command manipulates data in the service configuration repository. svccfg can be invoked interactively, with an individual subcommand, or by specifying a command file that contains a series of subcommands. Changes made to an existing service in the repository typically do not take effect for that service until the next time the service instance is refreshed.

• Question 168:

  You need to set up an Oracle Solaris 11 host as an iSCSI target so that the host's disk can be accessed over a storage network. The disk device is c3t4d0.

  Which six options describe the steps that need to be taken on this host to enable an iSCSI target?

  A. Create a ZFS file system named iscsi/target.
  B. Create a zpool named iscsi with disk device c3t4d0
  C. Create zfs volume named iscsi/target.
  D. Use the stmfadm command to create a LUN using /dev/zvol/rdsk/iscsi/target.
  E. Use the stmfadm command to create a LUN using iscsi/target.
  F. Use the stmfadm command to make the LUN viewable.
  G. Use the stmfadm command to make the volume viewable.
  H. Enable the svc:/network/iscsi/target:default Service.
  I. Use the itadm command to create the iSCSI target.
  B. Create a zpool named iscsi with disk device c3t4d0
  C. Create zfs volume named iscsi/target.
  D. Use the stmfadm command to create a LUN using /dev/zvol/rdsk/iscsi/target.
  F. Use the stmfadm command to make the LUN viewable.
  H. Enable the svc:/network/iscsi/target:default Service.
  I. Use the itadm command to create the iSCSI target.

  ---

  How to Create an iSCSI LUN

  The following steps are completed on the system that is providing the storage device. Example: target# zpool create sanpool mirror c2t3d0 c2t4d0 (C)2. Create a ZFS volume to be used as a SCSI LUN.

  (D)3. Create a LUN for the ZFS volume.

  Example:

  target# stmfadm create-lu /dev/zvol/rdsk/sanpool/vol1 Logical unit created: 600144F0B5418B0000004DDAC7C10001

  4. Confirm that the LUN has been created.

  Example

  target# stmfadm list-lu

  LU Name: 600144F0B5418B0000004DDAC7C10001

  (F) 5. Add the LUN view.

  This command makes the LUN accessible to all systems.

  target# stmfadm add-view 600144F0B5418B0000004DDAC7C10001

  How to Create the iSCSI Target

  This procedure assumes that you are logged in to the local system will contains the iSCSI target.

  Note: The stmfadm command manages SCSI LUNs. Rather than setting a special iSCSI property on the ZFS volume, create the volume and use stmfadm to create the LUN.

  (H)

  1. Enable the iSCSI target service.

  target# svcadm enable -r svc:/network/iscsi/target:default

  (I)

  2. Create the iSCSI target.

  target# itadm create-target

• Question 169:

  You are troubleshooting interface net3 and you enter the following sequence of commands:

  

  Your next command should be:

  A. ipadm up-addr net3/v4
  B. ipadm enable-if -T net3
  D. ipadm create-ip -T static -a 192.168.1.25/24 -n net3
  E. ipadm create-addr -T static -a 192.168.1.25/24 net3
  E. ipadm create-addr -T static -a 192.168.1.25/24 net3

  ---

  If you are assigning a static IP address, use the following syntax:

  # ipadm create-addr -T static -a address addrobj

  where addrobj uses the naming format interface/user-defined-string, such as e1000g0/v4globalz.

  Note:

  create-addr [-t] -T static [-d] -a {local | remote}=addr[/prefixlen], ... addrobj Creates a static IPv4 or IPv6 address on the interface specified in addrobj. If the interface on which the address is created is not plumbed, this subcommand will

  implicitly plumb the interface. The created static address will be identified by addrobj. By default, a configured address will be marked up, so that it can be used as a source or destination of or for outbound and inbound packets.

• Question 170:

  You display the IP interface information with ipmpstat -i.

  Which two characteristics are indicated by characters that may be included in the FLAGS column?

  A. default route
  B. IP forwarding enabled IS
  C. allocated to global zone
  D. unusable due to being inactive
  E. nominated to send/receive IPv4 multicast for its IPMP group
  D. unusable due to being inactive
  E. nominated to send/receive IPv4 multicast for its IPMP group

  ---

  FLAGS

  Indicates the status of each underlying interface, which can be one or any combination of the following:

  (D)

  d indicates that the interface is down and therefore unusable.

  (E)

  M indicates that the interface is designated by the system to send and receive IPv6 multicast traffic for the IPMP group.

  Note:

  i indicates that the INACTIVE flag is set for the interface. Therefore, the interface is not used to send or receive data traffic.

  s indicates that the interface is configured to be a standby interface.

  m indicates that the interface is designated by the system to send and receive IPv4 multicast traffic for the IPMP group.

  b indicates that the interface is designated by the system to receive broadcast traffic for the IPMP group.

  h indicates that the interface shares a duplicate physical hardware address with another interface and has been taken offline. The h flag indicates that the interface is unusable.