Oracle Oracle Certifications 1Z0-820 Questions & Answers

• Question 31:

  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.

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

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

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

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

  Correct 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 32:

  Before booting testzone. a non-global zone, you want to connect to the zone s console so that you can watch the boot process. Choose the command used to connect to testzone's console.

  A. zoneadm -C testzone

  B. zoneadm -console testzone

  C. zlogin -z testzone console C

  D. zlogin -z testzone -C

  E. zlogin -C testzone F zoneadm -z testzone -C

  Correct Answer: E

• Question 33:

  You are asked to troubleshoot networking issues on an unfamiliar system.

  Select the correct command to display what network devices are installed.

  A. ifconfig -a

  B. dladm show-dev

  C. dladm show-phys

  D. dladm show-ether

  E. netadm show-dev

  F. netadm show-ether

  Correct Answer: B

  Explanation: dladm show-dev

  Shows information for all devices or the specified device.

  Reference: man dladm

• Question 34:

  Identify the correctly matching pair of equivalent functionality of JumpStart and Automated installer (AI).

  A. JumpStart: begin script AI: package repository

  B. JumpStart: setup_server AI: installadm create-service

  C. JumpStart: add_Install_client AI: SMF system configuration profile files

  D. JumpStart: finish scripts and sysidsfg files AI: manifest files

  Correct Answer: B

  Explanation: JumpStart: Use the setup_install_server(1M) command. AI: Use the installadm create-service command.

  Reference: Transitioning From Oracle Solaris 10 JumpStart to Oracle Solaris 11 Automated Installer, Similarities and Differences Between JumpStart and AI

• Question 35:

  You have been tasked with creating a dedicated virtual network between two local zones within a single system. In order to isolate the network traffic from other zones on that system.

  To accomplish this, you will create__________.

  A. An ether stub

  B. A virtual router

  C. A virtual switch

  D. A virtual bridge.

  E. A virtual network interface

  F. Nothing because a virtual switch is automatically created then the virtual network interfaces are created.

  Correct Answer: A

  Explanation: Etherstubs are pseudo ethernet NICs which are managed by the system administrator. You can create VNICs over etherstubs instead of over physical links. VNICs over an etherstub become independent of the physical NICs in the system. With etherstubs, you can construct a private virtual network that is isolated both from the other virtual networks in the system and from the external network. For example, you want to create a network environment whose access is limited only to your company developers than to the network at large. Etherstubs can be used to create such an environment.

  Note: Oracle Solaris 11 introduces a new and powerful network stack architecture which includes:

  *

  Networking virtualization with virtual network interface cards (VNICs) and virtual switching (etherstubs)

  *

  Tight integration with zones

  *

  Network resource management - efficient and easy to manage integrated quality of service (QoS) to enforce bandwidth limit on VNICs and traffic flows We will be examini

  Reference: Oracle Solaris Administration: Network Interfaces and Network Virtualization, Configuring Components of Network Virtualization in Oracle Solaris

• Question 36:

  Your are troubleshooting network throughput on your server.

  To confirm that the load balancing among aggregated links is functioning properly, you want to examine the traffic statistics on the links comprising the aggregation.

  The correct command is ___________.

  A. dlstat - aggr

  B. dlstat show-aggr

  C. dlstat show-link -r

  D. dlstat show-link -aggr

  E. dlstat show-phys -aggr

  Correct Answer: B

  Explanation: dlstat show-aggr [-r | -t] [-i interval] [-p] [ -o field[,...]] [-u R|K|M|G|T|P] [link] Display per-port statistics for an aggregation.

• Question 37:

  Select the two statements that correctly describe the operation of NWAM.

  A. If a location is explicitly enabled, it remains active until explicitly changed.

  B. Wireless security keys can be configured by using the nwammgr command.

  C. NWAM stores profile information in /etc/ipadm/ipadm.conf and /etc/dladm/datalink.conf.

  D. Multiple locations may be automatically activated in systems with multiple network interface cards.

  E. Interface NCU Properties "float" and are automatically attached to the highest priority Link NCU Property.

  F. If the DefaultFixed NCP is enabled, persistent configuration, stored in /etc/ipadm.conf and /etc/dladm/ datalink.conf is used.

  Correct Answer: AD

  Explanation: A: Conditional and system locations can be manually activated, which means that the location remains active until explicitly disabled.

  D: A location comprises certain elements of a network configuration, for example a name service and firewall settings, that are applied together, when required. You can create multiple locations for various uses. For example, one location can be used when you are connected at the office by using the company intranet. Another location can be used at home when you are connected to the public Internet by using a wireless access point. Locations can be activated manually or automatically, according to environmental conditions, such as the IP address that is obtained by a network connection.

  

  Reference: Oracle Solaris Administration: Network Interfaces and NetworkVirtualization, Activating and Deactivating Profiles

  Reference: Oracle Solaris Administration: Network Interfaces and NetworkVirtualization,Creating and Managing Locations

• Question 38:

  The core dump configuration for your system is:

  

  A user is running a process in the global zone and the process crashes. The process information is:

  User1 2663 2618 0 17:46:42 pts/2 0:00 /usr/bin/bash

  The server host name is: zeus

  What will the per-process core file be named?

  A. core.bash.2663.global

  B. core.bash.2663.zeus

  C. /var/core/core.bash.2663

  D. /var/core/core.bash.2663.global

  Correct Answer: C

  Explanation: Note the first line:

  global core file pattern: /globalcore/core.%f.%p

  The program name is bash

  The runtime process ID is 2663

  Note: By default, the global core dump is disabled. You need to use the coreadm command with the -e

  global option to enable it. The -g option causes the command to append the program name(%f) and the

  runtime process ID (%p) to the core file name.

  Reference: Core Dump Management on the Solaris OS

• Question 39:

  You create a flash archive of the Solaris 10 global zone on the server named sysA and you name the archive s10-system.flar.

  You upgrade the operating system on sysA from Solaris 10 to Oracle Solaris 11.

  On sysA, you want to create a Solaris 10 non-global zone and import the flash archive into that zone The flash archive is available on sysA via NFS through the mountpoint;/net/backup_server/backup_server.

  Which two options do you choose to create the Solaris 10 zone capable of supporting the Solaris 10 flash archive? (Choose two.)

  A. zonecfg -z s 10-zone create-tSYSsolarislO

  B. zonecfg -z s 10-zone create setbrand=solaris10

  C. zonecfg -z solarisl 0 -t SYSsolarislO

  D. zonecfg -z s10-zone install -f/net/backup_setver/s1O-system.flar

  Correct Answer: CD

• Question 40:

  Which five statements describe options available for installing the Oracle Solaris 11operating system using the installation media?

  A. You can perform a text or LiveCD installation locally or over the network.

  B. The text Installer does not install the GNOME desktop. The GNOME desktop package must he added after you have installed the operating system.

  C. The LiveCD Installation cannot be used to install multiple instances of Oracle Solaris.

  D. The LiveCD installer cannot be used if you need to preserve a specific Solaris Volume Table of Contents (VTOC) slice in your current operating system.

  E. The LiveCD Installer is for x86 platforms only.

  F. The GUI installer cannot be used to upgrade your operating system from Solaris 10.

  G. If you are installing Oracle Solaris 11 on an x86-based system that will have more than one operating system installed in it, you cannot partition your disk during the installation process.

  H. The LiveCD installer can be used for SPARC or x86 platforms.

  Correct Answer: BCDEF

  Explanation: A: If the network is setup to perform automated installations, you can perform a text installation over the network by setting up an install service on the network and selecting a text installation when the client system boots.

  B: After a fresh install of Solaris 11 express, only the console mode is activated. To add Gnome, simply do :

  $ sudo pkg install slim_install

  This will install additional packages that are not installed by default.

  D: The text installer advantages over the GUI installer include:

  * In addition to modifying partitions, the text installer enables you to create and modify VTOC slices within the Solaris partition.

  F: How do I upgrade my Solaris 10 or lower systems to Solaris 11?

  Unfortunately, you CAN'T. There is no direct upgrade installer or other tool that will allow you to upgrade from earlier releases of Solaris to Solaris 11. This is primarily due to the vast changes in the packaging mechanism in Solaris 10.

  Reference: Oracle Solaris 11 Information Library, Comparing Installation Options