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During an audit of an enterprise that is dedicated to
e-commerce, the IS manager states that digital signatures
are used in the establishment of its commercial relations.
To substantiate this, the IS auditor must prove that which
of the following is used?
A. A biometric, digitalized and encrypted parameter with the
customer's public key
B. A hash of the data that is transmitted and encrypted with
the customer's private key
C. A hash of the data that is transmitted and encrypted with
the customer's public key
D. The customer's scanned signature, encrypted with the
customer's public key
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Answer: C
The calculation of a hash or digest of the data that is
transmitted and its encryption requires the public key of
the client (receiver) and is called a signature of the
message or digital signature. The receiver performs the same
process and then compares the received hash once it has been
decrypted with his/her private key, with the hash that
he/she calculates with the received data. If they are the
same, the conclusion would be that there is integrity in the
data that has arrived and the origin is authenticated.
| Is This Answer Correct ? | 3 Yes | 9 No |
Which of the following normally would be the MOST reliable evidence for an auditor? A. A confirmation letter received from a third party verifying an account balance B. Assurance from line management that an application is working as designed C. Trend data obtained from World Wide Web (Internet) sources D. Ratio analysis developed by the IS auditor from reports supplied by line management
Which of the following reports should an IS auditor use to check compliance with a service level agreement (SLA) requirement for uptime? A. Utilization reports B. Hardware error reports C. System logs D. Availability reports
Which of the following is a benefit of a risk-based approach to audit planning? Audit: A. scheduling may be performed months in advance. B. budgets are more likely to be met by the IS audit staff. C. staff will be exposed to a variety of technologies. D. resources are allocated to the areas of highest concern.
The primary purpose of an audit charter is to: A. document the audit process used by the enterprise. B. formally document the audit department's plan of action. C. document a code of professional conduct for the auditor. D. describe the authority and responsibilities of the audit department.
When reviewing a business process reengineering (BPR) project, which of the following is the MOST important for an IS auditor to evaluate? A. The impact of removed controls. B. The cost of new controls. C. The BPR project plans. D. The continuous improvement and monitoring plans.
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
The PRIMARY objective of a business continuity and disaster recovery plan should be to: A. safeguard critical IS assets. B. provide for continuity of operations. C. minimize the loss to an organization. D. protect human life.
Which of the following would BEST ensure continuity of a wide area network (WAN) across the organization? A. Built-in alternative routing B. Full system backup taken daily C. A repair contract with a service provider D. A duplicate machine alongside each server
Which of the following is the MOST important function to be performed by IS management when a service has been outsource? A. Ensuring that invoices are paid to the provider B. Participating in systems design with the provider C. Renegotiating the provider's fees D. Monitoring the outsourcing provider's performance
Which of the following is a disadvantage of image processing? A. Verifies signatures B. Improves service C. Relatively inexpensive to use D. Reduces deterioration due to handling
Which of the following is the MOST effective type of antivirus software to detect an infected application? A. Scanners B. Active monitors C. Integrity checkers D. Vaccines
During the course of an audit, the IS auditor discovers that the human resources (HR) department uses a cloud-based application to manage employee records. The HR department engaged in a contract outside of the normal vendor management process and manages the application on its own. Which of the following choices is of MOST concern? A. Maximum acceptable downtime metrics have not been defined in the contract. B. The IT department does not manage the relationship with the cloud vendor. C. The help desk call center is in a different country, with different privacy requirements. D. Company-defined security policies are not applied to the cloud application.
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