What social engineering principal frightens and coerces a victim by using threats?

A. intimidation
B. authority
C. urgency
D. scarcity

Answer: A

Computer Science & Information Technology

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If an ObjectInputStream is used to read information from the server, an __________ is generated when the client attempts to read a value from a stream on which end-of-stream is detected.

a. EOF. b. EOS. c. EOFException. d. EOSException.

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Computer Science & Information Technology

Which of the following statements about Java Class Libraries is false:

a. Java class libraries consist of classes that consist of methods that perform tasks. b. Java class libraries are also known as Java APIs (Application Programming Interfaces). c. An advantage of using Java class libraries is saving the effort of designing, developing and testing new classes. d. Java class libraries are not portable

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Write static methods that implement these recursive formulas to compute geometric( n) and harmonic(n). Do not forget to include a base case, which is not given in these formulas, but which you must determine. Place the methods in a test program that allows the user to compute both geometric(n) and harmonic(n) for an input integer n. Your program should allow the user to enter another value for n and repeat the calculation until signaling an end to the program. Neither of your methods should use a loop to multiply n numbers.

A geometric progression is defined as the product of the first n integers, and is denoted as geometric(n) = where this notation means to multiply the integers from 1 to n. A harmonic progression is defined as the product of the inverses of the first n integers, and is denoted as harmonic(n) = Both types of progression have an equivalent recursive definition: geometric(n) = harmonic(n) = This is another easy program to write as a recursive algorithm. One little detail is to avoid integer division truncation when calculating the harmonic progression by casting the numerator (1) in the division to double. Also note that it is easy to enter a value that will cause either an overflow for the geometric progression calculation or underflow for the harmonic progression calculation. Students should be made aware of these common pitfalls, especially because the system does not flag them as errors.

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Computer Science & Information Technology

Most languages provide a built-in way to check whether a value that is entered is numeric or not.

Answer the following statement true (T) or false (F)

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Computer Science & Information Technology