Which of the following is an advantage of packet filtering firewalls?

a. They can compare the packet to previous packets.
b. They can protect against SYN flood attacks.
c. They are inexpensive and easy to configure.
d. They offer user authentication.


ANS: C

Computer Science & Information Technology

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

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What do we call the process whereby Photoshop creates new pixels from the information of existing pixels in an image?

A. rasterization B. resizing C. polarization D. interpolation

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Indicate whether the statement is true or false

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An integer number is said to be a perfect number if the sum of its factors, including 1 (but not the number itself), is equal to the number. For example, 6 is a perfect number, because 6 = 1 + 2 + 3. Write a function perfect that determines whether parameter number is a perfect number. Use this function in a program that determines and prints all the perfect numbers between 1 and 1000. Print the

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Computer Science & Information Technology