Oracle 1Z0-821 Online Practice Questions and Exam Preparation

Oracle 1Z0-821 Online Questions & Answers

• Question 201:

  User brian changes the permissions for db_data this command:

  chmod 4755 db_data

  What is true?

  A. db_data now has permissions rwsr-xr-x and can be deleted only by user brian.
  B. db_data now has permissions rwsr-xr-x and, if executed, will inn with the permissions of user brian.
  C. db_data now has permissions rwxr-sr-x and can be deleted only by members of the group owning it.
  D. The permissions for db_data cannot be determined, because the permissions prior to the change have not been specified.
  E. db_data must be an ordinary file, because special permissions cannot be set on a directory.
  C. db_data now has permissions rwxr-sr-x and can be deleted only by members of the group owning it.

  ---

  Use the chmod command to change permissions for a file or directory. You must be the owner of a file or directory, or have root access, to change its permissions. Here we do not know if brian owns db_data.

  Note:

  Permission 7 full 6 read and write 5 read and execute 4 read only 3 write and execute 2 write only 1 execute only 0 none

  0 --- no permission 1 --x execute 2 -w- write 3 -wx write and execute 4 r-- read 5 r-x read and execute 6 rw- read and write 7 rwx read, write and execut

  Solaris: Solaris Advanced User's Guide

• Question 202:

  Which statement is correct about shudown and init commands?

  A. shutdown broadcasts one or more periodic shutdown warning messages to all logged-in users whereas init issues none.
  B. The shutdown command performs a clean shutdown of all services whereas init does not.
  C. The shutdown command brings the system to the single-user milestone by default. The init command must be used to shut the system down to run level 0.
  D. The shutdown command accepts SMF milestones, init stages, or run levels as arguments whereas init accepts only init stages or run levels as arguments.
  A. shutdown broadcasts one or more periodic shutdown warning messages to all logged-in users whereas init issues none.

• Question 203:

  View the Exhibit.

  

  Which is true regarding the disk drive?

  A. This disk configuration could be used as a ZFS root disk.
  B. This disk contains an SMI disk label.
  C. Slice 7 represents the entire disk and cannot be used as a slice for a file system
  D. The disk contains an EFI disk label.
  A. This disk configuration could be used as a ZFS root disk.

  ---

  Installing a ZFS Root Pool

  The installer searches for a disk based on a recommended size of approximately 13 GB.

• Question 204:

  What determines which bits in an IP address represent the subnet, and which represent the host?

  A. Subnet
  B. unicast
  C. netmask
  D. multicast
  E. broadcast
  C. netmask

  ---

  A subnetwork, or subnet, is a logically visible subdivision of an IP network. The practice of dividing a network into two or more networks is called subnetting. The routing prefix of an address is written in a form identical to that of the address itself. This is called the network mask, or netmask, of the address. For example, a specification of the most-significant 18 bits of an IPv4 address, 11111111.11111111.11000000.00000000, is written as 255.255.192.0.

• Question 205:

  Which best describes the svc:/system/boot-config service?

  A. It is used to change the milestone on a system.
  B. It is used to set the default run level of the system.
  C. It provides the parameters used to set the system to automatically perform a fast or slow reboot.
  D. When the service is enabled, the system performs a fast reboot by default; when it is disable the system performs a slow reboot by default.
  C. It provides the parameters used to set the system to automatically perform a fast or slow reboot.

  ---

  Starting with the Oracle Solaris 11 Express release, Fast Reboot is supported on the SPARC platform, as well as the x86 platform. On both platforms, this feature is controlled by the SMF and implemented through a boot configuration service, svc:/system/boot- config. The boot-config service provides a means for setting or changing the default boot configuration parameters.

  The fastreboot_default property of the boot-config service enables an automatic fast reboot of the system when either the reboot or the init 6 command is used. When the config/fastreboot_default property is set to true the system automatically performs a fast reboot, without the need to use the reboot -f command. By default, this property's value is set to false on the SPARC platform and to true on the x86 platform.

• Question 206:

  You want to delete the IPv4 address on the interface net3. Which command should you use?

  A. ipadm delete-ip net3/v4
  B. ipadm down-addr net3/v4
  C. ipadm disable-if net3/v4
  D. ipadm delete-vni net3/v4
  E. ipadm delete-addr net3/v4
  F. ipadm deiete-ipv4 ner3/v4
  E. ipadm delete-addr net3/v4

  ---

  The ipadm delete-addr subcommand removes addresses from interfaces.

  To remove an address from the IPMP group, type the following command:

  # ipadm delete-addr addrobj

  The addrobj uses the naming convention inder-interface/user-string.

• Question 207:

  A user jack, using a bash shell, requests a directory listing as follows:

  

  Which three statements are correct?

  A. The pattern dir? will expand to dira dirb dirc.
  B. The pattern dir*a will expand to diraa.
  C. The pattern dir*a will expand to dira diraa.
  D. The pattern dir*b? will expand to dirabc.
  E. The pattern dir*b? will expand to dirb dirabc.
  A. The pattern dir? will expand to dira dirb dirc.
  C. The pattern dir*a will expand to dira diraa.
  D. The pattern dir*b? will expand to dirabc.

  ---

  A: dir followed by a single letter.

  C: dir followed by any characters ending with a.

  D: dir followed by any characters, then character b, then one single character. only dirabc matches

• Question 208:

  Which command would you use to determine which package group is installed on your system?

  A. pkg list group/system/\*
  B. pkg info
  C. uname -a
  D. cat /var/sadm/system/admin/CLUSTEP
  B. pkg info

  ---

  The pkg info command provides detailed information about a particular IPS package.

  Note: The pkginfo command does the same for any SVR4 packages you may have installed on the same system.

  pkg info example: $ pkg info p7zip Name: compress/p7zip Summary: The p7zip compression and archiving utility Description: P7zip is a unix port of the 7-Zip utility. It has support for numerous compression algorithms, including LZMA and LZMA2, as well as for various archive and compression file formats, including 7z, xz, bzip2, gzip, tar, zip (read-write) and cab, cpio, deb, lzh, rar, and rpm (read-only). Category: System/Core State: Installed Publisher: solaris Version: 9.20.1 Build Release: 5.11 Branch: 0.175.0.0.0.2.537 Packaging Date: Wed Oct 19 09:13:22 2011 Size: 6.73 MB FMRI: pkg://solaris/compress/[email protected], 5.11-0.175.0.0.0.2.537:20111019T091322Z

• Question 209:

  The following image properties are displayed on your system:

  

  Which two options describe the boot environment policy property that is currently set for this image?

  A. All package operations are performed in a new BE set as active on the next boot.
  B. Do not create a new BE. The install, update, uninstall, or revert operation is not performed if a new BE is required.
  C. If a BE is created, do not set it as the active BE on the next boot
  D. A reboot is required for all package operations
  E. A reboot is not required after a package operation.
  F. For package operations that require a reboot, this policy creates a new BE set as active on the next boot.
  D. A reboot is required for all package operations
  F. For package operations that require a reboot, this policy creates a new BE set as active on the next boot.

  ---

  Image properties described below.

  * be-policy

  Specifies when a boot environment is created during packaging operations. The following values are allowed:

  / default

  Apply the default BE creation policy: create-backup.

  / always-new (D, F)

  Require a reboot for all package operations (D) by performing them in a new BE set as active on the next boot (F). A backup BE is not created unless explicitly requested. This policy is the safest, but is more strict than most sites need since

  no packages can be added without a reboot.

• Question 210:

  Examine this command and its output: $ zfs list -r -t all tank Name USED AVAIL REFER MOUNTPOINT tank 3.00G 1.84G 32K /tank tank/database 3.00G 1.84G 2.00G /tank/database tank/[email protected] 1.00G - 2.00G ? Which two conclusions can be drawn based on this output?

  A. The tank dataset consumes 3 GB of storage.
  B. The tank/[email protected] dataset consumes 1 GB of storage that is shared with its parent.
  C. The tank/[email protected] dataset consumes 1 GB of storage that is not shared with its parent.
  D. The tank/[email protected] dataset consumes 2 GB of storage that is shared with its child.
  E. The tank/[email protected] dataset consumes 2 GB of storage that is not shared with its child.
  A. The tank dataset consumes 3 GB of storage.
  B. The tank/[email protected] dataset consumes 1 GB of storage that is shared with its parent.