A programmer who writes programs specifically to exhibit good locality can expect marked improvement in their execution efficiency. List several strategies a programmer can use to improve locality. In particular, what high-level language features should be emphasized?
What will be an ideal response?
Some high-level features that should be emphasized are arrays and repetition statements.
These increase the amount of spatial locality because data is stored and accessed in
sequential virtual address order. Repetition statements involve temporal locality—the body
of the repetition statement is likely to be repeated (many times) in the near future.
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Answer the following statements true (T) or false (F)
1. Delay skew is critical because if the wire lengths of different wire pairs are significantly different, the data will arrive at the receiver at different times, potentially creating distortion of the data. 2. Single-mode fiber cables have a core diameter of about 7–10 micrometers. 3. The function of an attenuator is to reduce the receive signal level. 4. The human eye cannot see fiber-optic communication wavelengths, so you should never look into the end of a fiber. 5. It is important to be very careful working with fiber ends. These ends are extremely difficult to see and can become lost and/or easily embedded in your finger.
Only Firefox supports opacity values for images.
Answer the following statement true (T) or false (F)
Problems: Correcting Logic and Code ErrorsThe following sample of code contains errors. Rewrite the incorrect statements to correct all errors. Private Sub btnWrite_Click(sender As Object, e As EventArgs) Handles btnWrite.Click ' Writes a name to a sequential access file. ? ' Declare a StreamWriter variable. Dim outFile As IO.StreamReader ? ' Open the file for append. outFile = IO.File ("contestants.txt") ? ' Write the name on a separate line in the file. outFile.WriteLine(txtName.Text.Trim) ? ' Clear the Contestants box and then set the focus. txtContestants.Text = String.Empty txtName.Focus() End Sub
What will be an ideal response?
Dissatisfied clients are more likely than satisfied clients to ____.
A. resolve support incidents quickly B. contact the help desk repeatedly for assistance C. resolve support incidents at a low tier D. convey a positive business image to other users