Which of the following is true about cryptographic primitives?
A. each performs several tasks
B. a single primitive makes up an entire cryptographic protocol
C. primitives are usually not the source of security failures
D. a primitive that provides confidentiality usually also provides authentication
Answer: C
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Sections of most commercial Web sites are off-limits except to subscribers and registered customers and have a(n) ____ Web page that users must go through to get to the off-limits area.
A. password-protected B. protected C. unprotected-entry D. password key
Choose the special character that is used to indicate a blank space.
a. ``` ␣ ``` b. ``` ``` c. ``` © ``` d. ``` &space; ```
In the accompanying figure, what kind of gradient is sample 1?
A. shortened radial B. radial C. linear D. shortened linear
Which of the following are not correct?
a. The destructor of a class is not named the same as the name of the class, but preceded with a tilde b. The destructor of a class is not called when an object of the class goes out of scope c. The destructor of a class is not a member of the class d. The destructor of a class is a void function e. all of the above