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Which of the following types of firewalls would BEST protect
a network from an Internet attack?
A. Screened subnet firewall
B. Application filtering gateway
C. Packet filtering router
D. Circuit-level gateway
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Answer: A
A screened subnet firewall would provide the best
protection. The screening router can be a commercial router
or a node with routing capabilities and the ability to allow
or avoid traffic between nets or nodes based on addresses,
ports, protocols, interfaces, etc. Application-level
gateways are mediators between two entities that want to
communicate, also known as proxy gateways. The application
level (proxy) works at the application level, not only at a
package level. The screening controls at package level,
addresses, ports, etc. but does not see the contents of the
package. A packet filtering router examines the header of
every packet or data traveling between the Internet and the
corporate network.
| Is This Answer Correct ? | 7 Yes | 0 No |
A distinction that can be made between compliance testing and substantive testing is that compliance testing tests: A. details, while substantive testing tests procedures. B. controls, while substantive testing tests details. C. plans, while substantive testing tests procedures. D. for regulatory requirements, while substantive testing tests validations.
A decrease in amplitude as a signal propagates along a transmission medium is known as: A. noise. B. crosstalk. C. attenuation. D. delay distortion.
The responsibility for designing, implementing and maintaining a system of internal control lies with: A. the IS auditor. B. management. C. the external auditor. D. the programming staff.
Which of the following would be a compensating control to mitigate risks resulting from an inadequate segregation of duties? A. Sequence check B. Check digit C. Source documentation retention D. Batch control reconciliations
An IS auditor should use statistical sampling and not judgmental (nonstatistical) sampling, when: A. the probability of error must be objectively quantified. B. the auditor wants to avoid sampling risk. C. generalized audit software is unavailable. D. the tolerable error rate cannot be determined.
Following the development of an application system, it is determined that several design objectives have not been achieved. This is MOST likely to have been caused by: A. insufficient user involvement. B. early dismissal of the project manager. C. inadequate quality assurance (QA) tools. D. noncompliance with defined approval points.
To determine which users can gain access to the privileged supervisory state, which of the following should an IS auditor review? A. System access log files B. Enabled access control software parameters C. Logs of access control violations D. System configuration files for control options used
Which of the following controls would be MOST effective in ensuring that production source code and object code are synchronized? A. Release-to-release source and object comparison reports B. Library control software restricting changes to source code C. Restricted access to source code and object code D. Date and time-stamp reviews of source and object code
Which of the following techniques would provide the BEST assurance that the estimate of program development effort is reliable? A. Function point analysis B. Estimates by business area C. A computer-based project schedule D. An estimate by experienced programmer
An IS auditor has been assigned to conduct a test that compares job run logs to computer job schedules. Which of the following observations would be of the GREATEST concern to the IS auditor? A. There are a growing number of emergency changes. B. There were instances when some jobs were not completed on time. C. There were instances when some jobs were overridden by computer operators. D. Evidence shows that only scheduled jobs were run.
Which of the following audit techniques would an IS auditor place the MOST reliance on when determining whether an employee practices good preventive and detective security measures? A. Observation B. Detail testing C. Compliance testing D. Risk assessment
Which of the following is an objective of a control self-assessment (CSA) program? A. Concentration on areas of high risk B. Replacement of audit responsibilities C. Completion of control questionnaires D. Collaborative facilitative workshops
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