A problem with either segmented or paged address translation is timing. Suppose a user wants to read some data from an input device into memory. For efficiency during data transfer, often the actual memory address where the data are to be placed is provided to an I/O device. The real address is passed so that time-consuming address translation does not have to be performed during a very fast data
transfer. What security problems does this approach bring?
What will be an ideal response?
Address
bounding,
possibility
of
a
process's
moving
while
the
I/O
transfer
is
going
on,
possibility
of
forging
an
address
or
modifying
it
after
translation
but
before
its
receipt
by
the
I/O
device,
possibility
of
translation
or
transmission
failure
so
that
the
I/O
device
receives
an
incorrect
address.
With
paging,
there
is
also
the
problem
of
the
amount
of
data
crossing
a
page
boundary.
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The Savings Calculator application calculates the amount that the user will have on deposit after one year. The application gets the initial amount on deposit from the user, and assumes that the user will add $100 to the account every month for the entire year. No interest is added to the account. While testing the appli- cation, you noticed that the amount calculated by the application was incorrect. Use the debugger to locate and correct any logic error(s). Figure 10.31 displays the correct output for this application.
a) Copying the template to your working directory. Copy the C:ExamplesTutorial10ExercisesDebuggingSavingsCalculator directory to your C:SimplyJava directory.
b) Opening the template file. Open the SavingsCalculator.java file in your text editor.
c) Running the application. Run the Savings Calculator application by typing java SavingsCalculator. Enter 100 as the starting amount and click the Calculate JButton. Notice that the amount after one year is 1200, whereas the correct output would be 1300 (Fig. 10.31).
d) Compiling with the -g option. Close your application (but leave the Command Prompt open), and compile the application by typing javac -g SavingsCalcula- tor.java.
e) Starting the debugger. Start the debugger by typing jdb.
f) Finding and correcting the error(s). Use the debugging skills learned in previous tutorials to determine where the application’s logic errors exist. Modify the application so that it displays the correct
Different file types use different compression methods
Indicate whether the statement is true or false
The Internet has been around since 1969.
Answer the following statement true (T) or false (F)
Match each digital media to its use.
A. Use to create synthesized sounds B. Use to dictate a text message hands-free C. Use to watch a basketball game in real time D. Use to play the game Fragments E. Use to watch a favorite TV show at your convenience