Which of the following is not a firewall technology?

a. Packet filtering.
b. Proxy server.
c. Stateful packet filtering.
d. All the above are firewall technologies.


d. All the above are firewall technologies.
Explanation: Firewalls are based on three technologies: packet filtering, proxy server, and stateful packet filtering.

Computer Science & Information Technology

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Which of the following Python concepts are demonstrated directly or indirectly by the following code:

In [1]: type(x)
Out[1]: int

In [2]: x = 4.1

In [3]: type(x)
Out[3]: float

In [4]: x = 'dog'

In [5]: type(x)
Out[5]: str

a. Python uses dynamic typing—it determines the type of the object a variable refers to while executing your code. b. Over its lifetime a variable can be bound to different variables, even variables of different types. c. Python creates objects in memory and removes them from memory as neces-sary. This removal process—called garbage collection—helps ensure that memory is available for new objects you create. d. All of the above.

Computer Science & Information Technology

The main grayscale technology for e-text display on the Amazon Kindle Paperwhite and Barnes and Noble NOOK is ________

Fill in the blank(s) with correct word

Computer Science & Information Technology

____ are small squares of color that create the image, like tiles in a mosaic.

A. Bitmaps B. Blends C. Objects D. Pixels

Computer Science & Information Technology

Once you ____ and save an image, you cannot go back to the layered file.

a. flatten b. concatenate c. index d. transform

Computer Science & Information Technology