Oracle Oracle Certifications 1Z0-821 Questions & Answers

• Question 91:

  You created an IP address for interface not.3 with the following command, which executed successfully:

  ipadm create-addr –T static –a 192.168.0.100/24 net3/v4

  You then ran:

  ipadm show -if

  The result indicated that the interface was down.

  You then ran:

  ipadm delete-addr net3/v4

  ipadm create-addr –T static –a 192.168.0.101/24 net3/v4

  ipadm show-if

  The last command indicated that the interface was up.

  Why did it work with the second address specified, but not the first?

  A. The 192.168.0.100 address is reserved for broadcast messages.

  B. Another device exists on the network, using the 192.168.0.100 address.

  C. The network interface card does not support the address 192.168.0.100.

  D. The address 192.168.0.100 is at a boundary and may not be configured in Oracle Solaris 11.

  E. 192.168.0.100 is a DHCP address and may not be statically configured in Oracle Solaris 11.

  Correct Answer: B

  The first IP address is already in use.

• Question 92:

  When speaking to an Oracle Support Engineer, you are asked to verify the version of the Solaris 11 build currently running on your system.

  Which command would display the Solaris 11 build version currently running on your system?

  A. pkg info all

  B. cat /etc/release

  C. cat /etc/update

  D. prtconf | grep 璱 update

  E. pkg info entire

  Correct Answer: B

  Which Solaris release you are running on your system can be determined using the following command:

  cat /etc/release

  This will tell you which release you are running and when it was released. The more recent your system, the more info is contained in this file.

  Example: # cat /etc/release Oracle Solaris 10 8/11 s10s_u10wos_17b SPARC Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved. Assembled 23 August 2011

• Question 93:

  You wish to edit your crontab file that is located in /var/spool/cron/crontab. What command must you enter to edit this file?

  A. crontab -e

  B. crontab -e /var/spool/cron/crontab

  C. crontab -r

  D. crontab -e /etc/default/cron

  Correct Answer: A

  The main tool for setting up cron jobs is the crontab command, though this is not available on every Unix variant. Typically under Solaris or Linux one would create a new crontab or edit an existing one, using the command; crontab -e

  Use the ls -l command to verify the contents of the/var/spool/cron/crontabs file.

• Question 94:

  Select the packet type that identifies members of the group and sends information to all the network interfaces in that group.

  A. Unicast

  B. Multicast

  C. Broadcast

  D. Bayesian

  E. Quality of Service Priority

  Correct Answer: B

  IPv6 defines three address types:

  unicast

  Identifies an interface of an individual node.

  multicast

  Identifies a group of interfaces, usually on different nodes. Packets that are sent to the multicast address

  go to all members of the multicast group.

  anycast

  Identifies a group of interfaces, usually on different nodes. Packets that are sent to the anycast address go

  to the anycast group member node that is physically closest to the sender.

• Question 95:

  The COMSTAR framework provides support for the iSCSI protocol.

  Select three options that correctly describe the COMSTAR framework.

  A. iSCSI devices can be used as dump devices.

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

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

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

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

  Correct Answer: BDE

  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.

• Question 96:

  User jack logs in to host Solaris and executes the following command sequence:

  

  Which three statements are correct?

  A. User jack can edit testfile because he has read and write permissions at the group level.

  B. User jack can use cat to output the contents of testfile because he has read permission as the file owner.

  C. User jill can change the permissions of testfile because she has write permission for the file at the group level.

  D. User jill can edit testfile because she has read and write permission at the group level.

  E. User jack can change permissions for testfile because he is the owner of the file.

  F. User jack can change permissions for testfile because he has execute permission for the file.

  Correct Answer: DEF

• Question 97:

  You need to make sure that all of the software packages on your server are up to date. Without installing any updates, which two commands would display .my software updates that are available in the default Oracle repository?

  A. pkg list -u

  B. pkg verify -u `*'

  C. pkg search -u

  D. pkg info -r `*'

  E. pkg install -nv

  F. pkg update -nv `*'

  Correct Answer: AD

  A: the pgk list command display a list of packages in the current image, including state and other information. By default, package variants for a different architecture or zone type are excluded.

  D: pkginfo displays information about software packages that are installed on the system (with the first synopsis, with -l) or that reside on a particular device or directory (with the second synopsis, with -r).

  Without options, pkginfo lists the primary category, package instance, and the names of all completely installed and partially installed packages. It displays one line for each package selected.

  With -r, retrieve the data from the repositories of the image's configured publishers. Note that you must specify one or more package patterns in this case.

• Question 98:

  A local repository is available on this system and you need to enable clients to access this repository via HTTP. The repository information is:

  PUBLISHERTYPESTATUSURI

  solarisoriginonlinehttp://sysA.example.com

  Identify two of the steps that are required to make the local repository on this server available to the client via HTTP.

  A. On the server: set the pkg/inst_root and pkg/readonly properties for the svc:/application/pkg/ server:default service and enabled the service

  B. On the server: set the sharefs property on the ZFS file system containing the IPS repository.

  C. On the client: reset the origin for the solaris publisher.

  D. On the client: set the pkg/inst_root and pkg/readonly properties for the svc:/application/server:default service enable the service.

  E. On the client: start the pkg.depotd process.

  Correct Answer: AE

  A: Configure the Repository Server Service To enable clients to access the local repository via HTTP, enable the application/pkg/server Service Management Facility (SMF) service. # svccfg -s application/pkg/server setprop pkg/inst_root=/export/repoSolaris11 # svccfg -s application/pkg/ server setprop pkg/readonly=true

  E: Use pkg.depotd to serve the repository to clients. Start the Repository Service

  Restart the pkg.depotd repository service.

  # svcadm refresh application/pkg/server

  # svcadm enable application/pkg/server

  To check whether the repository server is working, open a browser window on the localhost location.

• Question 99:

  The advantage of core tiles is that they allow you an opportunity to examine the cause of problems, so that they can be resolved.

  However, core files must be managed because they_____.

  A. take up large amounts of disk space

  B. make numerous entries into the /var/adm/wtmpx file

  C. steal resources from the processor, slowing down system performance

  D. fill up swap space; this will begin to slow the system due to swaps

  E. fill up swap space; this will begin to slow the system due to paging

  Correct Answer: A

  Part of the job of cleaning up heavily loaded file systems involves locating and removing files that have not been used recently. You can locate unused files by using the ls or find commands.

  Other ways to conserve disk space include emptying temporary directories such as the directories located in /var/tmp or /var/spool, and deleting core and crash dump files.

  Note: Core files are generated when a process or application terminates abnormally. Core files are managed with the coreadm command.

  For example, you can use the coreadm command to configure a system so that all process core files are placed in a single system directory. This means it is easier to track problems by examining the core files in a specific directory whenever a process or daemon terminates abnormally.

• Question 100:

  When upgrading an existing system from Solaris 11 Express to Oracle Solaris 11, what happens to the datalink names?

  A. They follow the default naming convention for the newly installed version.

  B. They maintain their names.

  C. They are called eth#.

  D. They are called el00g#.

  E. They are left unnamed, to avoid conflicts, and need to be renamed after the installation process is complete.

  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.