Which of the following operations is not efficiently supported by a sin
gly-linked list?
a. accessing the element in the current position
b. insertion after the current position
c. insertion before the current position
d. moving to the position immediately following the current position
e. all of the above are efficiently supported
D
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________ refers to unencrypted text
a. Key b. Plain text c. Algorithm d. Cipher text
Suppose an intermediate node for onion routing were malicious, exposing the source and destination of communications it forwarded. Clearly the disclosure would damage the confidentiality onion routing was designed to achieve. If the malicious node were one of the two in the middle, what would be exposed. If it were one of three, what would be lost. Explain your answer in terms of the malicious
node in each of the first, second, and third positions. How many nonmalicious nodes are necessary to preserve privacy? What will be an ideal response?
Write a class GraphicsInterperter that reads in a file of graphics commands. The class GraphicsInterpreter should have a method interpretCommands that takes a filename as input (a String), reads the graphics commands from the file, and then returns a Picture with the graphics commands executed on it. The method interpretCommands starts out by creating a 640x480 blank picture, then draws on that, and returns it.
There are two kinds of commands: “line 10 20 300 400” should draw a line from (10, 20) to (300, 400). You can assume that those are single spaces between the co-ordinates. “circle 100 200 10” draws a circle whose upper-left hand corner is (100, 200) with a diameter for 10.
Which of the following is NOT true about professional and effective communications?
A. You should never back up correspondence. B. Respect the privacy of others. C. Clearly convey your message. D. Do not send unsolicited bulk messages.