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To prevent an organization's computer systems from becoming
part of a distributed denial-of-service attack, IP packets
containing addresses that are listed as unroutable can be
isolated by:
A. establishing outbound traffic filtering.
B. enabling broadcast blocking.
C. limiting allowable services.
D. network performance monitoring.
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Answer: A
Routers programmed with outbound traffic filtering, drop
outbound packets that contain addresses from other than the
user's organization, including source addresses that can not
be routed. Broadcast blocking can be done by filtering
routers or firewalls. When programmed, IP packets coming
from the Internet and using an address that broadcasts to
every computer on the destination organization's network can
be dropped. Firewalls and filtering routers can be
programmed to limit services not allowed by policy and can
help prevent use of the company's systems. However, this
will not isolate packets that can not be routed. Network
performance monitoring is a way to monitor system
performance for potential intrusions on a real-time basis
and could help identify unusual traffic volumes.
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In regard to moving an application program from the test environment to the production environment, the BEST control would be provided by having the: A. application programmer copy the source program and compiled object module to the production libraries. B. as paul says, C. production control group compile the object module to the production libraries using the source program in the test environment. D. production control group copy the source program to the production libraries and then compile the program.
When a new system is to be implemented within a short time frame, it is MOST important to: A. finish writing user manuals. B. perform user acceptance testing. C. add last-minute enhancements to functionalities. D. ensure that code has been documented and reviewed.
Which of the following reports is a measure of telecommunication transmissions and determines whether transmissions are completed accurately? A. Online monitor reports B. Downtime reports C. Help desk reports D. Response time reports
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Which of the following is a measure of the size of an information system based on the number and complexity of a system?s inputs, outputs and files? A. Function point (FP) B. Program evaluation review technique (PERT) C. Rapid application design (RAD) D. Critical path method (CPM)
Which of the following would an IS auditor consider to be the MOST important to review when conducting a business continuity audit? A. A hot site is contracted for and available as needed. B. A business continuity manual is available and current. C. Insurance coverage is adequate and premiums are current. D. Media backups are performed on a timely basis and stored offsite.
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Which of the following situations would increase the likelihood of fraud? A. Application programmers are implementing changes to production programs. B. Application programmers are implementing changes to test programs. C. Operations support staff are implementing changes to batch schedules. D. Database administrators are implementing changes to data structures.
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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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