LaudonEss6_TIF_ch15 - Chapter 15 15-1 Information System...

Chapter 15 Information System Security and Control 15
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Chapter 15
Information System Security and Control
True-False Questions
1. It is only by careful attention to detail and careful testing that it is possible to achieve the goal
of zero defects in large, complex pieces of software.
Answer: False Difficulty: Medium Reference: p. 522
2. Automated data are less susceptible to destruction and misuse than paper data.
Answer: False Difficulty: Easy Reference: p. 522
3. Firms relying on computers to process critical business transactions could experience a total
loss of business function if they lose computer capability for more than a few days.
Answer: True Difficulty: Medium Reference: p. 522
4. Advances in telecommunications and computer software have magnified the vulnerabilities of
computerized information systems.
Answer: True Difficulty: Easy Reference: p. 522
5. Wireless networks are more vulnerable to penetration because radio frequency bands are
easy to scan.
Answer: True Difficulty: Easy Reference: p. 523
6. A Trojan horse virus stays dormant until a specific time or date condition is met.
Answer: False Difficulty: Medium Reference: p. 524
7. Wireless computing devices are not subject to viruses.
Answer: False Difficulty: Medium Reference: p. 524
8. Management must continually update antivirus software.
Answer: True Difficulty: Easy Reference: p. 524
9. Disaster recovery services offer backup for client/server systems as well as traditional
mainframe applications.
Answer: True Difficulty: Medium Reference: p. 526
10. One constant threat to information systems is defective software and the subsequent
defective data.
Answer: True Difficulty: Easy Reference: p. 529
11. It is virtually impossible to eliminate all bugs from large programs.
Answer: True Difficulty: Easy Reference: p. 529

15-2 Information Systems Security and Control Chapter 15
12. There is currently no early warning system for cyberattacks or any liaison between the U.S.
government and corporations for such warnings.
Answer: False Difficulty: Hard Reference: p. 529
13. Maintenance of a system is the most expensive phase of the systems development process.
Answer: True Difficulty: Medium Reference: p. 530
14. A majority of systems errors result from early analysis errors.
Answer: True Difficulty: Hard Reference: p. 530
15. Errors not detected until after implementation of the information system can take up to 90
times as long to correct as they would if they were caught in the analysis and design stage.
Answer: True Difficulty: Medium Reference: p. 530
16. The most common source of information system failure is electrical surges.
Answer: False Difficulty: Easy Reference: p. 530
17. It is essential for the success of today’s digital businesses that controls must be designed
and implemented as early as possible, preferably in the design stage.