Once a data source is selected for a chart, the only way to change the data source is to start over creating the chart

In this chapter we have described sequence numbers between a sender and receiver as a way to protect a communication stream against substitution and replay attacks. Describe a situation in which an attacker can substitute or replay in spite of sequence numbers. For which type of sequence numbering—one general stream of sequence numbers or a separate stream for each pair of communicators—is this attack effective?

What will be an ideal response?

What is the effect of the statement gr.DrawString("ello" Me.Font, Brushes.Blue, 50, 60)?

(A) Display the word Hello in blue. (B) Display the word Hello beginning 50 pixels from the left side of the picture box. (C) Display the word Hello with the top of the word 60 pixels from the top of the picture box. (D) All of the above