Which of the following provides the GREATEST assurance of
message authenticity?
A. The pre-hash code is derived mathematically from the
message being sent.
B. The pre-hash code is encrypted using the sender's private
key.
C. Encryption of the pre-hash code and the message using the
secret key.
D. Sender attains the recipient's public key and verifies
the authenticity of its digital certificate with a
certificate authority.
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Answer: B
Encrypting the pre-hash code using the sender's private key
provides assurance of the authenticity of the message.
Mathematically deriving the pre-hash code provides integrity
to the message. Encrypting the pre-hash code and the message
using the secret key provides confidentiality.
| Is This Answer Correct ? | 10 Yes | 1 No |
The IS auditor learns that when equipment was brought into the data center by a vendor, the emergency power shutoff switch was accidentally pressed and the UPS was engaged. Which of the following audit recommendations should the IS auditor suggest? A. Relocate the shut off switch. B. Install protective covers. C. Escort visitors. D. Log environmental failures.
Which of the following forms of evidence for the auditor would be considered the MOST reliable? A. An oral statement from the auditee B. The results of a test performed by an IS auditor C. An internally generated computer accounting report D. A confirmation letter received from an outside source
When conducting a review of business process re-engineering, an IS auditor found that a key preventive control had been removed. In this case, the IS auditor should: A. inform management of the finding and determine if management is willing to accept the potential material risk of not having that preventing control. B. determine if a detective control has replaced the preventive control during the process and if so, not report the removal of the preventive control. C. recommend that this and all control procedures that existed before the process was reengineered be included in the new process. D. develop a continuous audit approach to monitor the effects of the removal of the preventive control.
Which of the following represents the MOST pervasive control over application development? A. IS auditors B. Standard development methodologies C. Extensive acceptance testing D. Quality assurance groups
An IS auditor needs to link his/her microcomputer to a mainframe system that uses binary synchronous data communications with block data transmission. However, the IS auditor's microcomputer, as presently configured, is capable of only asynchronous ASCII character data communications. Which of the following must be added to the IS auditor's computer to enable it to communicate with the mainframe system? A. Buffer capacity and parallel port B. Network controller and buffer capacity C. Parallel port and protocol conversion D. Protocol conversion and buffer capability
The use of a GANTT chart can: A. aid in scheduling project tasks. B. determine project checkpoints. C. ensure documentation standards. D. direct the post-implementation review.
An organization wants to enforce data integrity principles and achieve faster performance/execution in a database application. Which of the following design principles should be applied? A. User (customized) triggers B. Data validation at the front end C. Data validation at the back end D. Referential integrity
Functionality is a characteristic associated with evaluating the quality of software products throughout their lifecycle, and is BEST described as the set of attributes that bear on the: A. existence of a set of functions and their specified properties. B. ability of the software to be transferred from one environment to another. C. capability of software to maintain its level of performance under stated conditions. D. relationship between the performance of the software and the amount of resources used.
With regard to sampling it can be said that: A. sampling is generally applicable when the population relates to an intangible or undocumented control. B. if an auditor knows internal controls are strong, the confidence coefficient may be lowered. C. attribute sampling would help prevent excessive sampling of an attribute by stopping an audit test at the earliest possible moment. D. variable sampling is a technique to estimate the rate of occurrence of a given control or set of related controls.
The impact of EDI on internal controls will be: A. that fewer opportunities for review and authorization will exist. B. an inherent authentication. C. a proper distribution of EDI transactions while in the possession of third parties. D. that IPF management will have increased responsibilities over data center controls.
Which of the following testing methods is MOST effective during the initial phases of prototyping? A. System B. Parallel C. Volume D. Top-down
In a web server, a common gateway interface (CGI) is MOST often used as a(n): A. consistent way for transferring data to the application program and back to the user. B. computer graphics imaging method for movies and TV. C. graphic user interface for web design. D. interface to access the private gateway domain.
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