Oracle Oracle Certifications 1Z0-821 Questions & Answers

• Question 41:

  View the Exhibit and review the file system information displayed from a remote server.

  

  You are configuring a new server. This new server has the following storage pool configured:

  

  This new server also has the following file systems configured:

  

  When you are finished building this new server, the pool1/data dataset must be an exact duplicate of note server. What is the correct procedure to create the pool1/data dataset on this new server?

  A. zfs create –o mountpoint=/data –o refquota=1g pool1/data

  B. zfs set mountpoint=none pool1zfs create pool1/data

  C. zfs set mountpoint=none pool1zfs create –o mountpoint=/data –o quota=1g pool1/data

  D. zfs create quota=1g pool1/data

  E. zfs create mountpoint=/data pool1/data

  F. zfs set quota=1g pool1/data

  Correct Answer: A

• Question 42:

  Review the storage pool information: Choose the correct procedure to repair this storage pool.

  

  A. Shut the system down, replace disk c3t3d0, and boot the system. When the system is booted, execute the zpool clear pool1 command.

  B. Shut the system down, replace disk c3t3d0, and boot the system. When the system is booted execute the zpool online pool1 command.

  C. Shut the system down, replace disk c3t3d0, and boot the system. When the system is booted, execute the zpool replace pool1 c3t3d0 command.

  D. Shut the system down, replace disk c3t3d0, and boot the system. When the system is booted, execute the zpool replace pool1 c3t3d0 c3t3d0 command.

  Correct Answer: C

  You might need to replace a disk in the root pool for the following reasons:

  The root pool is too small and you want to replace it with a larger disk

  The root pool disk is failing. In a non-redundant pool, if the disk is failing so that the system won't boot,

  you'll need to boot from an alternate media, such as a CD or the network, before you replace the root pool

  disk.

  In a mirrored root pool configuration, you might be able to attempt a disk replacement without having to

  boot from alternate media. You can replace a failed disk by using the zpool replace command.

  Some hardware requires that you offline and unconfigure a disk before attempting the zpool replace

  operation to replace a failed disk.

  For example:

  # zpool offline rpool c1t0d0s0

  # cfgadm -c unconfigure c1::dsk/c1t0d0

  # cfgadm -c configure c1::dsk/c1t0d0

  # zpool replace rpool c1t0d0s0

  # zpool online rpool c1t0d0s0

  # zpool status rpool

  SPARC# installboot -F zfs /usr/platform/`uname -i`/lib/

  fs/zfs/bootblk /dev/rdsk/c1t0d0s0 x86# installgrub /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c1t9d0s0

• Question 43:

  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

  Correct Answer: A

  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 44:

  You want the system to generate an email notification each time one of the services has changed its state. Which option would send an email message to the system administrator whenever a service changes to the maintenance state?

  A. Use the setsc command in ALOM to enable the mail alerts to be sent to a specified email address whenever the fault management facility detects a service change to the maintenance state.

  B. Make an entry in the /etc/syslog.conf file to instruct syslogd to send an email alert when it receives a message from the SMF facility that a service has changed to the maintenance state.

  C. Use the svccfg setnotify command to create a notification and send an email when a service enters the maintenance state.

  D. Use the scvadm command to enable the notification service. Set the 璯 maintenance option on the netnotify service to send an email when a service enters the maintenance state.

  Correct Answer: C

  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: 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]

• Question 45:

  When you issue the "gzip: zommand not found" message is displayed. You need to install the gzip utility on your system.

  Which command would you use to check if the gzip utility is available from the default publisher for installation?

  A. pkg info|grep gzip

  B. pkg list SUNWgzip

  C. pkg contents gzip

  D. pkg search gzip

  Correct Answer: D

  Searching for Packages

  Use the pkg search command to search for packages whose data matches the specified pattern.

  Like the pkg contents command, the pkg search command examines the contents of packages. While the pkg contents command returns the contents, the pkg search command returns the names of packages that match the query.

  pkg search search [-HIaflpr] [-o attribute ...] [-s repo_uri] query Search for matches to the query, and display the results. Which tokens are indexed are action-dependent, but may include content hashes and pathnames.

  Note: pkg is the retrieval client for the image packaging system. With a valid configuration, pkg can be invoked to create locations for packages to be installed, called 'images', and install packages into those images. Packages are published by publishers, who may make their packages available at one or more repositories. pkg, then, retrieves packages from a publisher's repository and installs them into an image.

• Question 46:

  The su command by default makes an entry into the log file for every su command attempt.

  The following is a single line from the file:

  SU 12/18 23:20 + pts/1 user1-root

  What does the + sign represent?

  A. unsuccessful attempt

  B. successful attempt

  C. The attempt was from a pseudo terminal, and not the console.

  D. The attempt was from a user that is in the adm group, same as root.

  E. Time zone is not set.

  Correct Answer: B

  The sulog file, /var/adm/sulog, is a log containing all attempts (whether successful or not) of the su command. An entry is added to the sulog file every time the su command is executed. The fields in sulog are: date, time, successful (+) or unsuccessful (-), port, user executing the su command, and user being switched to. In the preceding example, all su attempts were successful, except for the attempt on 2/23 at 20:51, when user pete unsuccessfully attempted to su to user root.

  Look for entries where an unauthorized user has used the command inappropriately. The following entry shows a successful (indicated by +) su from user userid to root.

  SU 03/31 12:52 + pts/0 -root

• Question 47:

  The current ZFS configuration on your server is:

  pool1 124K 3.91G 32K /pool1

  pool1/data 31K 3.91G 31K /data

  You need to create a new file system named /data2. /data2 will be a copy of the /data file system.

  You need to conserve disk space on this server whenever possible.

  Which option should you choose to create /data2, which will be a read writeable copy of the /data file

  system, while minimizing the amount of total disk space used in pool1?

  A. zfs set mountpoint=/data2 compression=on pool1/data2

  B. zfs snapshot pool1/data@nowzfs set mountpoint=/data2, comptession=on pool1/data@now

  C. zfs create snapshot pool1/data@nowzfs send pool1/data@now | zfs recv pool1/data2

  D. zfs create snapshot pool1/data@nowzfs clone -o mountpoint=/data2 pool1/data@now pool1/data2

  E. zfs snapshot pool1/data@nowzfs clone -o mountpoint=/data2 -ocompression=on pool1/data@now pool1/data2

  F. zfs snapshot pool1/data@nowzfs clone -o mountpoint=/data2 pool1/data@now pool1/data2

  Correct Answer: E

  zfs snapshot [-r] [-o property=value] ... filesystem@snapname|volume@snapname Creates a snapshot

  with the given name. All previous modifications by successful system calls to the file system are part of the

  snapshot

  zfs clone [-p] [-o property=value] ... snapshot filesystem|volume Creates a clone of the given snapshot.

  Note:

  Because snapshots are fast and low overhead, they can be used extensively without great concern for

  system performance or disk use .

  With ZFS you can not only create snapshot but create a clone of a snapshot. A clone is a writable volume or file system whose initial contents are the same as the dataset from which it was created. As with snapshots, creating a clone is nearly instantaneous, and initially consumes no additional disk space. In addition, you can snapshot a clone.

  A clone is a writable volume or file system whose initial contents are the same as the original dataset. As with snapshots, creating a clone is nearly instantaneous, and initially consumes no additional space.

  Clones can only be created from a snapshot. When a snapshot is cloned, it creates an implicit dependency between the parent and child.

• Question 48:

  Identify the two security features incorporated in the Oracle Solaris 11 Cryptographic Framework.

  A. Layer 5 IP address encryptions

  B. Internet protocol security

  C. Diffie-Kerberos coaxial key encryption

  D. Signed cryptographic plugins (providers)

  E. Kernel support for signed antivirus plugins

  Correct Answer: DE

  The framework enables providers of cryptographic services to have their services used by many consumers in the Oracle Solaris operating system. Another name for providers is plugins. The framework allows three types of plugins:

  *

  User-level plugins - Shared objects that provide services by using PKCS #11 libraries, such as pkcs11_softtoken.so.1.

  *

  Kernel-level plugins - Kernel modules that provide implementations of cryptographic algorithms in software, such as AES.

  Many of the algorithms in the framework are optimized for x86 with the SSE2 instruction set and for SPARC hardware.

  *

  Hardware plugins - Device drivers and their associated hardware accelerators. The Niagara chips, the ncp and n2cp device drivers, are one example. A hardware accelerator offloads expensive cryptographic functions from the operating system. The Sun Crypto Accelerator 6000 board is one example.

• Question 49:

  Examine this command and its output: # zoneadm list Global zone2 Which two outcomes can be deduced from this output?

  A. There is exactly one nonglobal zone installed.

  B. There is one nonglobal zone running.

  C. There is at least one oneglobal zone configured.

  D. There is one nonglobal zone that is not configured.

  E. There is one nonglobal zone that is not running.

  F. The is one nonglobal zone that is not installed.

  G. There is exactly one nonglobal zone configured.

  Correct Answer: BC

• Question 50:

  Solaris 11 includes a redesigned software packaging model: the Image Packaging system.

  Which three describe advantages of the Image Packaging System over the previous Solaris 10 SVR4 packaging model?

  A. Eliminates patching of the software package

  B. Makes the patching process more efficient with less downtime

  C. Eliminates OS version upgrade

  D. Allows for the installation of the OS without a local DVD or installation server

  E. Allows the use of a repository mirror to speed up package operation

  F. Allows users to publish their own software package in a software repository

  Correct Answer: AEF