1Z0-821 Online Practice Questions and Answers

Correct Answer: BEF

B (not A, not D, Not C): If two client machines need to be installed with the same version of the Oracle Solaris 11 OS but need to be installed differently in other ways, then create two AI manifests for the AI install service. The different AI manifests can specify different packages to install or a different slice as the install target, for example. Note: An AI manifest provides installation instructions. The AI manifest specifies one or more IPS package repositories where the client retrieves the packages needed to complete the installation. The AI manifest also includes the names of additional packages to install and information such as target installation device and partition information.

F: The install server can be either an x86 machine or a SPARC machine.

Correct Answer: DE

The NVRAM chip stores user-definable system parameters, also referred to as NVRAM variables or

EEPROM parameters. The parameters allow administrators to control variables such as the default boot

device and boot command. The NVRAM also contains writeable areas for user-controlled diagnostics,

macros, and device aliases. NVRAM is where the system identification information is stored, such as the

host ID, Ethernet address, and time-of-day (TOD) clock.

Examples of NVRAM variables:

Variable Default Description boot-device disk or net The device from which to start up.

diag-device net The diagnostic startup source device. diag-file Empty string Arguments passed to the

startup program in diagnostic mode. diag-switch? false Whether to run in diagnostic mode

Correct Answer: A

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

Correct Answer: A

If you're logged on to the system, you can run prstat -Z to generate a summary of cpu/memory utilization by zone.

Correct Answer: C

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking, and essentially establishes the Internet.

Correct Answer: C

The prctl utility allows the examination and modification of the resource controls associated with an active process, task, or project on the system. It allows access to the basic and privileged limits and the current usage on the specified entity.

How to Change the zone.cpu-shares Value in a Zone Dynamically This procedure can be used in the global zone or in a non-global zone. For more information about roles, see Configuring and Using RBAC (Task Map) in System Administration Guide: Security Services. # prctl -n zone.cpu-shares -r -v value -i zone zonename idtype is either the zonename or the zoneid. value is the new value.

Note: project.cpu-shares Number of CPU shares granted to a project for use with the fair share scheduler

Correct Answer: E

The coreadm command is used to specify the name and location of core files produced by abnormally-terminating processes.

Correct Answer: A

Network configuration in Oracle Solaris 11 includes

* Generic datalink name assignment ?Generic names are automatically assigned to datalinks using the net0, net1, netN naming convention, depending on the total number of network devices that are on the system

Note: There is no upgrade path from Oracle Solaris 10 to Oracle Solaris 11. You must perform a fresh installation.

Correct Answer: D

How to Disable Programs From Using Executable Stacks Purpose: Prevent executable stack from

overflowing.

You must be in the root role.

Edit the /etc/system file, and add the following line:

set noexec_user_stack=1

Reboot the system.

# reboot

Correct Answer: BCD

The graphical installer is officially known as the "Live Media." This means that Oracle Solaris can be booted into RAM, causing zero impact on your existing operating system. After it is loaded, you are free to experiment with Oracle Solaris to determine whether it is something you would like to install to your system.

You can download Oracle Solaris 11 Live Media for x86, which is an approximately 800 MB image file, and use a DVD burner to create the disk, or you can use the ISO image directly in a virtual machine or through the Oracle Integrated Lights Out Manager (ILOM) Remote Console.

The Live Media is not intended for long-term use. For example, any changes that you make to the system are lost when the system is shut down. Therefore, the next logical step is to install Oracle Solaris on the system, which the Live Media makes easy by placing an Install Oracle Solaris icon right on the desktop. But before we head down that road, let's step back a bit and consider the installation options.

Note: The Live Media provides administrators with an opportunity to explore the Oracle Solaris 11 environment without installing it on a system. The system boots off the media directly allowing administrators to start the installer should they choose to install it to a system.