Explain the strengths and weaknesses of using symmetric encryption, like AES, versus a public-key cryptosystem, like RSA
What will be an ideal response?
Symmetric algorithms, like AES, are fast to perform encryption and decryption,
but they have a setup challenge in that Alice and Bob have to figure out some way to share
the secret key. In a public-key cryptosystem, there is no problem in setting up any secret
key, but the encryption and decryption algorithms are slower.
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Which of the following statements is false?
a. You cannot prevent client code from creating objects of a class. b. One common use of a private constructor is sharing initialization code among a class’s other constructors. c. Another common use of private constructors is to force client code to use so-called “factory methods” to create objects. d. A factory method is a public static method that creates and initializes an object of a specified type (possibly of the same class), then returns a reference to it.
When the MessageBox action is executed, the macro is paused so a message can be displayed. Click ________ in order for the macro to continue
A) OK B) Cancel C) Go D) Continue
Which of the following ensures that messages originate from their advertised source?
A. Sender authentication B. Message integrity C. Message confidentiality D. Message availability
Which of the following is not a forbidden character for filenames of web pages?
A. * B. & C. ^ D. _