Oracle 1z0-580 Exam Practice Questions (P. 3)
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Question #11
A customer has multiple applications and you believe consolidation using Oracle Solaris Zones will help them. The customer is concerned that consolidating them all on one physic server may cause adverse interactions between them, causing problems with functionality, security, and performance. What are the two benefits of Zones that would explain why Zones would be a good choice?
- Abetter single threaded performance
- Bbetter software isolation
- Cbetter hardware isolation
- Dsimpler VLAN management
- Esimple, effective resource controls
Correct Answer:
BE
B (not C): A zone is a virtualized operating system environment that is created within a single instance of the Oracle Solaris operating system. Oracle Solaris
Zones are a partitioning technology that provides an isolated, secure environment for applications.
Note:
* When you create a zone, you produce an application execution environment in which processes are isolated from the rest of the system. This isolation prevents a process that is running in one zone from monitoring or affecting processes that are running in other zones. Even a process running with root credentials cannot view or affect activity in other zones. A zone also provides an abstract layer that separates applications from the physical attributes of the machine on which the zone is deployed. Examples of these attributes include physical device paths and network interface names. The default non-global zone brand in the Oracle
Solaris 11.1 release is the solariszone.
By default, all systems have a global zone. The global zone has a global view of the Oracle Solaris environment that is similar to the superuser (root) model. All other zones are referred to as non-global zones. A non-global zone is analogous to an unprivileged user in the superuser model. Processes in non-global zones can control only the processes and files within that zone. Typically, system administration work is mainly performed in the global zone. In rare cases where a system administrator needs to be isolated, privileged applications can be used in a non-global zone. In general, though, resource management activities take place in the global zone.
Reference: Oracle Solaris 11.1 Information Library, Oracle Solaris Zones Overview
BE
B (not C): A zone is a virtualized operating system environment that is created within a single instance of the Oracle Solaris operating system. Oracle Solaris
Zones are a partitioning technology that provides an isolated, secure environment for applications.
Note:
* When you create a zone, you produce an application execution environment in which processes are isolated from the rest of the system. This isolation prevents a process that is running in one zone from monitoring or affecting processes that are running in other zones. Even a process running with root credentials cannot view or affect activity in other zones. A zone also provides an abstract layer that separates applications from the physical attributes of the machine on which the zone is deployed. Examples of these attributes include physical device paths and network interface names. The default non-global zone brand in the Oracle
Solaris 11.1 release is the solariszone.
By default, all systems have a global zone. The global zone has a global view of the Oracle Solaris environment that is similar to the superuser (root) model. All other zones are referred to as non-global zones. A non-global zone is analogous to an unprivileged user in the superuser model. Processes in non-global zones can control only the processes and files within that zone. Typically, system administration work is mainly performed in the global zone. In rare cases where a system administrator needs to be isolated, privileged applications can be used in a non-global zone. In general, though, resource management activities take place in the global zone.
Reference: Oracle Solaris 11.1 Information Library, Oracle Solaris Zones Overview
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Question #12
A zone won't boot. Identify the five causes.
- AThe zone is configured to have its own CPUs, and there aren't enough.
- BThe zone is configured to have exclusive access to an NIC, and the NIC is already up.
- CThe zone is configured to mount a file system, which is already mounted.
- DThe zone is currently running or shutting down.
- EThe zone has been uninstalled.
- FYour terminal session is missing the SYS_TIME privilege.
Correct Answer:
ABCDE
A: dedicated-cpu Resource -
The dedicated-cpu resource specifies that a subset of the system's processors should be dedicated to a non-global zone while it is running. When the zone boots, the system will dynamically create a temporary pool for use while the zone is running.
C: s the global administrator in the global zone, you can import raw and block devices into a non-global zone. After the devices are imported, the zone administrator has access to the disk. The zone administrator can then create a new file system on the disk and perform one of the following actions:
Mount the file system manually -
Place the file system in /etc/vfstab so that it will be mounted on zone boot
D, E: Booting a zone places the zone in the running state. A zone can be booted from the ready state or from the installed state. A zone in the installed state that is booted transparently transitions through the ready state to the running state. Zone login is allowed for zones in the running state.
Incorrect:
Not F: Sys_time not related to booting a zone.
ABCDE
A: dedicated-cpu Resource -
The dedicated-cpu resource specifies that a subset of the system's processors should be dedicated to a non-global zone while it is running. When the zone boots, the system will dynamically create a temporary pool for use while the zone is running.
C: s the global administrator in the global zone, you can import raw and block devices into a non-global zone. After the devices are imported, the zone administrator has access to the disk. The zone administrator can then create a new file system on the disk and perform one of the following actions:
Mount the file system manually -
Place the file system in /etc/vfstab so that it will be mounted on zone boot
D, E: Booting a zone places the zone in the running state. A zone can be booted from the ready state or from the installed state. A zone in the installed state that is booted transparently transitions through the ready state to the running state. Zone login is allowed for zones in the running state.
Incorrect:
Not F: Sys_time not related to booting a zone.
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Question #13
Which two statements are true of the GRUB menu?
- AGRUB is the default boot loader for Oracle Solaris 11 SPARC and x86.
- BGRUB supports Oracle Solaris and Oracle Linux only.
- CGRUB loads a kernel based upon the file name, disk, and partition specified.
- DGRUB uses boot environments for all operating systems.
- EGRUB is fully compliant with the Multiboot specification.
Correct Answer:
AC
A:
* If your system has more than one OS installed on the system or more than one root boot environment in a ZFS root pool, you can boot from these boot environments for both SPARC and x86 platforms.
* GRUB, the open source boot loader, is the default boot loader in the Solaris OS.
C: With GRUB based booting, the kernel is loaded by specifying its file name, and the drive, and the partition where the kernel resides. GRUB based booting replaces the Solaris Device Configuration Assistant and simplifies the booting process with a GRUB menu.
Incorrect:
Not E:
* In this implementation of GRUB, the multiboot module is no longer used.
AC
A:
* If your system has more than one OS installed on the system or more than one root boot environment in a ZFS root pool, you can boot from these boot environments for both SPARC and x86 platforms.
* GRUB, the open source boot loader, is the default boot loader in the Solaris OS.
C: With GRUB based booting, the kernel is loaded by specifying its file name, and the drive, and the partition where the kernel resides. GRUB based booting replaces the Solaris Device Configuration Assistant and simplifies the booting process with a GRUB menu.
Incorrect:
Not E:
* In this implementation of GRUB, the multiboot module is no longer used.
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Question #14
What two features identify Oracle Solaris 11 as being "built for clouds"?
- Aability to use SSH lo securely connect to Oracle Solaris 11 servers
- Bfirst fully virtualized operating system featuring built-in virtualization with Zones
- Csecure rapid provisioning and lifecycle management
- DOracle Solaris 11 has been designed to provide a robust and easily usable desktop environment for end users
- EOracle Solaris 11 is installable from DVD Media
Correct Answer:
BD
B: Built-in Virtualization -
Whatever the needs of your cloud infrastructure, Oracle has a comprehensive suite of built-in virtualization technologies to compliment your business requirements.
Choose from Oracle Solaris Zones, OVM Server for SPARC, OVM Server for x86 and OVM VirtualBox. With Oracle Solaris Zones, administrators can rapidly provision secure and isolated virtual environments in which to deploy cloud applications and services.
D:
Oracle Solaris is the best platform for the cloud because it combines key computing elements - operating system, virtualization, networking, storage management, and user environment - into a stable, secure, mission-critical foundation that customers can depend on
BD
B: Built-in Virtualization -
Whatever the needs of your cloud infrastructure, Oracle has a comprehensive suite of built-in virtualization technologies to compliment your business requirements.
Choose from Oracle Solaris Zones, OVM Server for SPARC, OVM Server for x86 and OVM VirtualBox. With Oracle Solaris Zones, administrators can rapidly provision secure and isolated virtual environments in which to deploy cloud applications and services.
D:
Oracle Solaris is the best platform for the cloud because it combines key computing elements - operating system, virtualization, networking, storage management, and user environment - into a stable, secure, mission-critical foundation that customers can depend on
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Question #15
Your installation has completed successfully and the system did not reboot automatically. Which option would cause this?
- AAutomatic reboots are only allowed when invoked via SMF.
- BThe client never reboots automatically after the successful installation, staying available for manually verification of the install process.
- CThe "auto_reboot" parameter in the Automated Installer manifest has not been set to "true."
- DThe "installation" service needed to be refreshed for the "auto_reboot" setting is to be applied, so all clients being installed from it could reboot.
- EPost installation reboots are no longer necessary because the Oracle Solaris 11 Automated Installation installs and actives the system's services in the desired
Correct Answer:
C
auto_reboot Optional. Omitting the auto_reboot attribute is equivalent to setting the value of the attribute to false. By default, AI does not automatically reboot the client after installation. To request automatic reboot of the client after successful installation, specify auto_reboot="true".
Note:
* Example 1 Set the auto_reboot Attribute
$ aimanifest set /auto_install/ai_instance@auto_reboot false
Reference: Creating a Custom AI Manifest
C
auto_reboot Optional. Omitting the auto_reboot attribute is equivalent to setting the value of the attribute to false. By default, AI does not automatically reboot the client after installation. To request automatic reboot of the client after successful installation, specify auto_reboot="true".
Note:
* Example 1 Set the auto_reboot Attribute
$ aimanifest set /auto_install/ai_instance@auto_reboot false
Reference: Creating a Custom AI Manifest
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