A programmer managed to gain access to the production
library, modified a program that was then used to update a
sensitive table in the payroll database and restored the
original program. Which of the following methods would MOST
effectively detect this type of unauthorized changes?
A. Source code comparison
B. Executable code comparison
C. Integrated test facilities (ITF)
D. Review of transaction log files
Answer / guest
Answer: D
Changes made to the payroll database table would appear in
the transaction log files. Because the original program was
restored, source and executable code comparisons are
ineffective. ITF is less effective than source code
comparison, because it is difficult to know what to look for.
| Is This Answer Correct ? | 2 Yes | 0 No |
Which of the following implementation modes would provide the GREATEST amount of security for outbound data connecting to the Internet? A. Transport mode with authentication header plus encapsulating security payload (ESP) B. Secure socket layer (SSL) mode C. Tunnel mode with AH plus ESP D. Triple-DES encryption mode
Which of the following data entry controls provides the GREATEST assurance that the data is entered correctly? A. Using key verification B. Segregating the data entry function from data entry verification C. Maintaining a log/record detailing the time, date, employee's initials/user id and progress of various data preparation and verification tasks D. Adding check digits
Which of the following IS functions may be performed by the same individual, without compromising on control or violating segregation of duties? A. Job control analyst and applications programmer B. Mainframe operator and system programmer C. Change/problem and quality control administrator D. Applications and system programmer
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An organization is considering connecting a critical PC-based system to the Internet. Which of the following would provide the BEST protection against hacking? A. An application-level gateway B. A remote access server C. A proxy server D. Port scanning
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