State and describe the four fundamental characteristics of a sine wave.

What will be an ideal response?


There are four important characteristics of signals that relate to sine waves:
? Frequency: the number of oscillations per unit time (usually seconds)
? Amplitude: the difference between the maximum and minimum signal heights
? Phase: how far the start of the sine wave is shifted from a reference time
? Wavelength: the length of a cycle as a signal propagates across a medium

Computer Science & Information Technology

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private fields of a superclass can be accessed in a subclass

a. by calling private methods declared in the superclass. b. by calling public or protected methods declared in the superclass. c. directly. d. All of the above.

Computer Science & Information Technology

What will be matched by the following ed regular expressions? (Tip: If you're using them in other contexts, you should omit the backslashes

* [0-9]\{3\} xx* [0-9]\{3,5\} x\{5,\} ^\... x\{10\} [A-Za-z_][A-Za-z_0-9]* [0-9]* ^Begin$ [0-9][0-9][0-9] ^\(.\).*\1$

Computer Science & Information Technology

Which of the following agents is called upon when directing a message to a specific user in a mail server?

a. Mail user agent b. Mail transport agent c. Mail delivery agent d. Application interface agent

Computer Science & Information Technology

Detection and identification rate isthe rate at which individuals in a database are properly identified in a closed-set identification application.

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

Computer Science & Information Technology