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Self-Test
1. A transaction monitor is used to __________.
a. convert foreign currencies in a transaction
b. distribute and improve the scalability of applications
c. monitor system operation and detect errors
2. A three-tier architecture requires at lease three computers.
a. true
b. false
3. In a three-tier architecture, the common tiers are _______________.
a. user interface, messaging, and database
b. Web browser, Web server, and database
c. user interface, business logic, and database
4. When designing browser-based user interfaces, attention must be give to ___________.
a. usability and performance
b. graphical controls and the database
c. smart terminal capabilities
5. A critical factor for system performance and data integrity is _________.
a. user authentication and security
b. transparency of location
c. location of transaction state
6. XML is an emerging technology for __________.
a. formatting text as an extension to HTML
b. self-describing data exchange
c. improving database performance
7. Scaling up the database tier is _____________.
a. accomplished through CGI
b. accomplished through the Web server
c. difficult beyond a single computer
8. The goal of object-oriented programming is to ________________.
a. add polymorphism to the system
b. add inheritance to the system
c. add better abstractions to the system
9. Object middleware is useful because it ____________.
a. enables programming language independence
b. enables platform independence
c. enables APIs for other user interfaces
d. all of the above
10. The steps to create software for other countries include ___________.
a. internationalization and localization
b. internationalization and customization
c. internationalization, localization, and customization

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