What are the three different resiliency types that can be used in a storage pool, and how do they work?
What will be an ideal response?
The three resiliency types or fault tolerance capabilities are as follows:
* Simple-Similar to RAID level 0 using stripe sets without parity. As is true for RAID level 0, this storage pool resiliency type is used primarily to achieve faster disk reads and writes. Disk failure means you lose your data.
* Mirror-Similar in concept to RAID level 1 for disk mirroring or duplexing. This resiliency type stripes data onto several volumes, while creating additional copies of the data for fault tolerance. You must have two or more disks. This resiliency type requires the use of more disk space on which to create additional data copies, but it is relatively high performance.
* Parity-Similar to RAID level 5 using striping with parity. Requiring at least three disks, this resiliency type offers redundancy, but with lower disk write performance than the other forms of resiliency.
You might also like to view...
The most-used button in a Web browser is the ________ button.
a. Bookmark b. Back c. Refresh d. Home
Create an application that allows users to add items to a daily task list. The application’s GUI should appear as in Fig. 14.16. The tasks should be placed in a JTextArea, one task per line. The application should also display the number of tasks to be performed. Use method String.valueOf to display the number of tasks in numberJText- Field.
a) Copying the template to your working directory. Copy the C:Examples Tutorial14ExercisesTaskList directory to your C:SimplyJava directory.
b) Opening the template file. Open the TaskList.java file in your text editor.
c) Declaring an instance variable. At line 24, declare instance variable counter of type int and initialize its value to 0. Add a comment before you declare the instance vari- able.
d) Adding code to the Add Task JButton’s actionPerformed event handler. At line
108, add code to the addTaskJButtonActionPerformed event handler. This event
handler should display the user input in the taskListJTextArea, increment the instance variable created in the previous step, update the numberJTextField that displays the number of tasks and clear the user input from the taskJTextField. Use method String.valueOf to display the number of tasks in the numberJTextField.
e) Saving the application. Save your modified source code file.
f) Opening the C
Discuss the difficulties in defending against the speed of attacks.
What will be an ideal response?
File stream objects connect a program to a ____.
A. keyboard B. terminal screen C. storage device D. file