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The feature of a digital signature that ensures the sender
cannot later deny generating and sending the message is:
A. data integrity.
B. authentication.
C. nonrepudiation.
D. replay protection.
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Answer: C
All of the above are features of a digital signature.
Nonrepudiation ensures that the claimed sender cannot later
deny generating and sending the message. Data integrity
refers to changes in the plaintext message that would result
in the recipient failing to compute the same message hash.
Since only the claimed sender has the key, authentication
ensures that the message has been sent by the claimed
sender. Replay protection is a method that a recipient can
use to check that the message was not intercepted and replayed.
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Which of the following is MOST likely to result from a business process reengineering (BPR) project? A. An increased number of people using technology B. Significant cost savings, through a reduction in the complexity of information technology C. A weaker organizational structures and less accountability D. Increased information protection (IP) risk will increase
Which of the following is the MOST reasonable option for recovering a noncritical system? A. Warm site B. Mobile site C. Hot site D. Cold site
An IS auditor reviewing back-up procedures for software need only determine that: A. object code libraries are backed up. B. source code libraries are backed up. C. both object and source codes libraries are backed up. D. program patches are maintained at the originating site.
Which of the following would an IS auditor consider the MOST relevant to short-term planning for the IS department? A. Allocating resources B. Keeping current with technology advances C. Conducting control self-assessment D. Evaluating hardware needs
Assumptions while planning an IS project involve a high degree of risk because they are: A. based on known constraints. B. based on objective past data. C. a result of lack of information. D. often made by unqualified people.
The MAJOR concern for an IS auditor when reviewing an organization's business process reengineering (BRP) efforts is: A. cost overrun of the project. B. employees resistance to change. C. key controls may be removed from a business process. D. lack of documentation of new processes.
The difference between a vulnerability assessment and a penetration test is that a vulnerability assessment: A. searches and checks the infrastructure to detect vulnerabilities, whereas penetration testing intends to exploit the vulnerabilities to probe the damage that could result from the vulnerabilities. B. and penetration tests are different names for the same activity. C. is executed by automated tools, whereas penetration testing is a totally manual process. D. is executed by commercial tools, whereas penetration testing is executed by public processes.
A primary function of risk management is the identification of cost-effective controls. In selecting appropriate controls, which of the following methods is best to study the effectiveness of adding various safeguards in reducing vulnerabilities? A. "What if" analysis B. Traditional cost/benefit analysis C. Screening analysis D. A "back-of-the-envelope" analysis
Which of the following are data file controls? A. Internal and external labeling B. Limit check and logical relationship checks C. Total items and hash totals D. Report distribution procedures
Which of the following would be the LEAST likely indication that complete or selected outsourcing of IS functions should be considered? A. The applications development backlog is greater than three years. B. It takes one year to develop and implement a high-priority system. C. More than 60 percent of programming costs are spent on system maintenance. D. Duplicate information systems functions exist at two sites.
Which of the following concerns associated with the World Wide Web would be addressed by a firewall? A. Unauthorized access from outside the organization B. Unauthorized access from within the organization C. A delay in Internet connectivity D. A delay in downloading using file transfer protocol (FTP)
A single digitally signed instruction was given to a financial institution to credit a customer's account. The financial institution received the instruction three times and credited the account three times. Which of the following would be the MOST appropriate control against such multiple credits? A. Encrypting the hash of the payment instruction with the public key of the financial institution. B. Affixing a time stamp to the instruction and using it to check for duplicate payments. C. Encrypting the hash of the payment instruction with the private key of the instructor. D. Affixing a time stamp to the hash of the instruction before being digitally signed by the instructor.
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