Oracle 1Z0-821 Online Practice Questions and Exam Preparation

Oracle 1Z0-821 Online Questions & Answers

• Question 241:

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

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  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 242:

  User jack makes use of the bash shell; his home directory is/export/home/jack. What is the correct setting of umask, and where should it be set, to allow jack to create a shell script using the vi editor, that is executable by default?

  A. It is not possible to make a script executable without using the chmod command.
  B. umask value of 0002 set in /etc/profile
  C. umask value of 0002 set in /export/home/jack/.bashrc
  D. umask value of 0722 set in /etc/profile
  E. umask value of 0722 set In /export/home/jack/.bashrc
  B. umask value of 0002 set in /etc/profile

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  The user file-creation mode mask (umask) is use to determine the file permission for newly created files. It can be used to control the default file permission for new files. It is a four- digit octal number. You can setup umask in /etc/bashrc or /etc/profile file for all users. By default most Unix distro set it to 0022 (022) or 0002 (002).

  1. The default umask 002 used for normal user. With this mask default directory permissions are 775 and default file permissions are 664.

  2. The default umask for the root user is 022 result into default directory permissions are 755 and default file permissions are 644.

  3. For directories, the base permissions are (rwxrwxrwx) 0777 and for files they are 0666 (rw-rw-rw). In short,

  1. A umask of 022 allows only you to write data, but anyone can read data.

  2. A umask of 077 is good for a completely private system. No other user can read or write your data if umask is set to 077.

  3. A umask of 002 is good when you share data with other users in the same group. Members of your group can create and modify data files; those outside your group can read data file, but cannot modify it. Set your umask to 007 to completely exclude users who are not group members.

• Question 243:

  To assist in examining and debugging running processes, Solaris 11 has a utility that returns pro arguments and the names and values of environment variables. What is the name of this utility?

  A. ppgsz
  B. pargs
  C. pmap
  D. pgrep
  B. pargs

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  The pargs utility examines a target process or process core file and prints arguments, environment variables and values, or the process auxiliary vector.