Most operating systems include security features, such as an integrated ____, to protect against unauthorized access via the Internet.

A. router
B. firewall
C. hub
D. modem


Answer: B

Computer Science & Information Technology

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Which type of list does not contain a null pointer at the end of the list?

a. backwards linked b. doubly linked c. circular linked d. null linked e. None of these

Computer Science & Information Technology

What is the purpose of a “skip navigation” link? Why is this beneficial to people who are blind? What other group would benefit from “skip navigation” links?

Justify your answer.

Computer Science & Information Technology

With ____________________, you can insert and remove a device while the computer is running.

Fill in the blank(s) with the appropriate word(s).

Computer Science & Information Technology

____________________ software is mass-produced, copyrighted software that meets the needs of a wide variety of users, not just a single user or company.

Fill in the blank(s) with the appropriate word(s).

Computer Science & Information Technology