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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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At the end of a simulation of an operational contingency test, the IS auditor performed a review of the recovery process. The IS auditor concluded that the recovery took more than the critical time frame allows. Which of the following actions should the auditor recommend? A. Widen the physical capacity to accomplish better mobility in a shorter time. B. Shorten the distance to reach the hot site. C. Perform an integral review of the recovery tasks. D. Increase the number of human resources involved in the recovery process.
Which of the following represents the GREATEST risk created by a reciprocal agreement for disaster recovery made between two companies? A. Developments may result in hardware and software incompatibility. B. Resources may not be available when needed. C. The recovery plan cannot be tested. D. The security infrastructures in each company may be different.
Which of the following functions, if combined, would be the GREATEST risk to an organization? A. Systems analyst and database administrator B. Quality assurance and computer operator C. Tape librarian and data entry clerk D. Application programmer and tape librarian
Digital signatures require the: A. signer to have a public key and the receiver to have a private key. B. signer to have a private key and the receiver to have a public key. C. signer and receiver to have a public key. D. signer and receiver to have a private key.
Which of the following is a role of an IS steering committee? A. Initiate computer applications. B. Ensure efficient use of data processing resources. C. Prepare and monitor system implementation plans. D. Review the performance of the systems department.
Which of the following audit procedures would MOST likely be used in an audit of a systems development project? A. Develop test transactions B. Use code comparison utilities C. Develop audit software programs D. Review functional requirements documentation
Access rules normally are included in which of the following documentation categories? A. Technical reference documentation B. User manuals C. Functional design specifications D. System development methodology documents
During an audit of a reciprocal disaster recovery agreement between two companies, the IS auditor would be PRIMARILY concerned about: A. the soundness of the impact analysis. B. hardware and software compatibility. C. differences in IS policies and procedures. D. frequency of system testing.
Which of the following is the MOST important issue to the IS auditor in a business process re-engineering (BPR) project would be? A. The loss of middle management, which often is a result of a BPR project B. That controls are usually given low priority in a BPR project C. The considerable negative impact that information protection could have on BPR D. The risk of failure due to the large size of the task usually undertaken in a BPR project
While reviewing the business continuity plan of an organization, the IS auditor observed that the organization's data and software files are backed up on a periodic basis. Which characteristic of an effective plan does this demonstrate? A. Deterrence B. Mitigation C. Recovery D. Response
IS auditors reviewing access control should review data classification to ensure that encryption parameters are classified as: A. sensitive. B. confidential. C. critical. D. private.
Which of the following is a control over database administration activities? A. A database checkpoint to restart processing after a system failure B. Database compression to reduce unused space C. Supervisory review of access logs D. Backup and recovery procedures to ensure database availability
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