Hardware Reference
In-Depth Information
Answers to Review Questions
1.
D. User accounts differentiate one user from another on a PC, allowing each user to
maintain separate preferences and fi les.
2.
C. Standard and administrator are the two levels of user accounts. An administrator has
the right to make system changes that affect other users; a standard user does not.
×
3.
900. Color depth refers to the
number of bits used to describe each pixel's color. Refresh rate is a setting mostly for CRT
monitors that controls how often the display is repainted.
B. Screen resolution is the number of pixels, such as 1600
4.
A. A free, automatically installed fi x is a minor update. An upgrade would involve chang-
ing the version or edition of the OS.
5.
D. Linux is an open-source operating system. The others listed are commercial products.
6.
D. As listed in Table 6.3, the 64-bit version of Windows 7 requires 2 GB of RAM.
7.
D. Mac OS X versions are all named for large cats.
8.
A. Add-on devices such as a dial-up modem are most likely to require a third-party driver
after changing OS versions. Most built-in components like the processor do not, and basic
keyboard and mouse functionality are built into Windows.
9.
C. Making changes that affect the entire system require that you be logged in as an admin-
istrator.
10. B. A clean install is one in which a new copy of the OS is installed, abandoning all old
copies. With this comes the option of repartitioning and reformatting.
11. C. The product key, usually printed on the jacket in which the setup disc comes, is the
unique identifi er for that copy of Windows.
12. B. System requirements for each application are printed on its box or in its specifi cations
when you buy or download it online.
13. D. Firewall software monitors the incoming and outgoing network traffi c, and it queries
the user when it sees activity from a new application.
14. B. Bandwidth is the connection's ability to send data swiftly and in large quantities.
Interruptions in video playback online are usually a result of Internet delays caused by
inadequate bandwidth.
15. B. Freeware is free, but users are not authorized to modify it. In contrast, open source
software not only is free, but also may be freely modifi ed by anyone, with source code
provided.
16. C. Shareware is free for a limited-time trial or with limited features. Users who want to
continue to use it are expected to pay for it.
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