Which of the following security concepts can Matt, a security administrator, implement to support integrity?
A. Digital signatures
B. Trust models
C. Key escrow
D. Recovery agents
Answer: A. Digital signatures
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Which of the statements below is false?
Consider the classes below, declared in the same file: ``` class A { int a; public A() { a = 7; } } class B extends A { int b; public B() { b = 8; } } ``` a. Both variables a and b are instance variables. b. After the constructor for class B executes, the variable a will have the value 7. c. After the constructor for class B executes, the variable b will have the value 8. d. A reference of type A can be treated as a reference of type B.
When you program with event-driven languages, the emphasis is on the objects that the user can manipulate, such as buttons and menus, and on the events that the user can initiate with those objects, such as clicking or double-clicking.
Answer the following statement true (T) or false (F)
Which of the following is not an example of a color scheme?
a. monochromatic b. analogous c. complementary d. gradient
The ____________________ command can be used to install and/or upgrade .deb packages over the Internet using ftp or http.
Fill in the blank(s) with the appropriate word(s).