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A sequence of bits appended to a digital document that is
used to secure an e-mail sent through the Internet is called a:
A. digest signature.
B. electronic signature.
C. digital signature.
D. hash signature.
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Answer: C
A digital signature through the private cryptographic key
authenticates a transmission from a sender through the
private cryptographic key. It is a string of bits that
uniquely represent another string of bits, a digital
document. An electronic signature refers to the string of
bits that digitally represents a handwritten signature
captured by a computer system when a human applies it on an
electronic pen pad, connected to the system.
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The reason for having controls in an IS environment: A. remains unchanged from a manual environment, but the implemented control features may be different. B. changes from a manual environment, therefore the implemented control features may be different. C. changes from a manual environment, but the implemented control features will be the same. D. remains unchanged from a manual environment and the implemented control features will also be the same.
An IS auditor is conducting substantive audit tests of a new accounts receivable module. The IS auditor has a tight schedule and limited computer expertise. Which would be the BEST audit technique to use in this situation? A. Test data B. Parallel simulation C. Integrated test facility D. Embedded audit module
Which of the following functions is performed by a virtual private network (VPN)? A. Hiding information from sniffers on the net B. Enforcing security policies C. Detecting misuse or mistakes D. Regulating access
Which of the following controls is LEAST likely to detect changes made online to master records? A. Update access to master file is restricted to a supervisor independent of data entry. B. Clerks enter updates online and are finalized by an independent supervisor. C. An edit listing of all updates is produced daily and reviewed by an independent supervisor. D. An update authorization form must be approved by an independent supervisor before entry.
The PRIMARY purpose of audit trails is to: A. improve response time for users. B. establish accountability and responsibility for processed transactions. C. improve the operational efficiency of the system. D. provide useful information to auditors who may wish to track transactions.
Which of the following controls would BEST detect intrusion? A. User ids and user privileges are granted through authorized procedures. B. Automatic logoff is used when a workstation is inactive for a particular period of time. C. Automatic logoff of the system after a specified number of unsuccessful attempts. D. Unsuccessful logon attempts are monitored by the security administrator.
A validation which ensures that input data are matched to predetermined reasonable limits or occurrence rates, is known as: A. Reasonableness check. B. Validity check. C. Existence check. D. Limit check.
An organization is developing a new business system. Which of the following will provide the MOST assurance that the system provides the required functionality? A. Unit testing B. Regression testing C. Acceptance testing D. Integration testing
Which of the following is intended to detect the loss or duplication of input? A. Hash totals B. Check digits C. Echo checks D. Transaction codes
Testing the connection of two or more system components that pass information from one area to another is: A. pilot testing. B. parallel testing C. interface testing. D. regression testing.
Utility programs that assemble software modules needed to execute a machine instruction application program version are: A. text editors. B. program library managers. C. linkage editors and loaders. D. debuggers and development aids.
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.
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