Does a VPN use symmetric or asymmetric encryption? Explain your answer
What will be an ideal response?
Typically,
a
VPN
uses
asymmetric
encryption
to
establish
a
symmetric
key
between
the
two
VPN
end
points;
then
the
communication
proceeds
under
symmetric
encryption.
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URLs for secure Web connections begin with _____.
A. http B. https C. httpt D. httsp
(Computer-Assisted Instruction: Reducing Student Fatigue) One problem in CAI environ- ments is student fatigue. This can be reduced by varying the computer’s responses to hold the stu- dent’s attention. Modify the program of Exercise 5.56 so that various comments are displayed for each answer as follows:
Possible responses to a correct answer: Very good! Excellent! Nice work! Keep up the good work! Possible responses to an incorrect answer: No. Please try again. Wrong. Try once more. Don't give up! No. Keep trying. Use random-number generation to choose a number from 1 to 4 that will be used to select one of the four appropriate responses to each correct or incorrect answer. Use a switch statement to issue the responses.
____________________ signals represent information with a sequence of 0s and 1s.
Fill in the blank(s) with the appropriate word(s).
You can use the ________ statement to make decisions.
Fill in the blank(s) with the appropriate word(s).