An IS auditor performing an independent classification of
systems should consider a situation where functions could be
performed manually at a tolerable cost for an extended
period of time as:
A. critical.
B. vital.
C. sensitive.
D. noncritical.
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Answer: C
Sensitive functions are best described as those that can be
performed manually at a tolerable cost for an extended
period of time. Critical functions are those that cannot be
performed unless they are replaced by identical capabilities
and cannot be replaced by manual methods. Vital functions
refer to those that can be performed manually but only for a
brief period of time. This is associated with lower costs of
disruption than critical functions. Noncritical functions
may be interrupted for an extended period of time, at little
or no cost to the company, and require little time or cost
to restore.
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Which of the following audit procedures would an IS auditor be LEAST likely to include in a security audit? A. Review the effectiveness and utilization of assets. B. Test to determine that access to assets is adequate. C. Validate physical, environmental and logical access policies per job profiles. D. Evaluate asset safeguards and procedures that prevent unauthorized access to the assets.
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Which of the following is LEAST likely to be contained in a digital certificate for the purposes of verification by a trusted third party (TTP)/certification authority (CA)? A. Name of the TTP/CA B. Public key of the sender C. Name of the public key holder D. Time period for which the key is valid
When using public key encryption to secure data being transmitted across a network: A. both the key used to encrypt and decrypt the data are public. B. the key used to encrypt is private, but the key used to decrypt the data is public. C. the key used to encrypt is public, but the key used to decrypt the data is private. D. both the key used to encrypt and decrypt the data are private.
Which of the following is the MOST reliable sender authentication method? A. Digital signatures B. Asymmetric cryptography C. Digital certificates D. Message authentication code
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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 types of transmission media provide the BEST security against unauthorized access? A. Copper wire B. Twisted pair C. Fiber-optic cables D. Coaxial cables
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Is it appropriate for an IS auditor from a company that is considering outsourcing its IS processing to request and review a copy of each vendor's business continuity plan? A. Yes, because the IS auditor will evaluate the adequacy of the service bureau's plan and assist his/her company in implementing a complementary plan. B. Yes, because, based on the plan, the IS auditor will evaluate the financial stability of the service bureau and its ability to fulfill the contract. C. No, because the backup to be provided should be specified adequately in the contract. D. No, because the service bureau's business continuity plan is proprietary information.
An IS auditor's primary concern when application developers wish to use a copy of yesterday's production transaction file for volume tests is that: A. users may prefer to use contrived data for testing. B. unauthorized access to sensitive data may result. C. error handling and credibility checks may not be fully proven. D. full functionality of the new process is not necessarily tested.
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