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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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Which of the following would be the LEAST likely indication that complete or selected outsourcing of IS functions should be considered? A. The applications development backlog is greater than three years. B. It takes one year to develop and implement a high-priority system. C. More than 60 percent of programming costs are spent on system maintenance. D. Duplicate information systems functions exist at two sites.
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The purpose of debugging programs is to: A. generate random data that can be used to test programs before implementing them. B. protect, during the programming phase, valid changes from being overwritten by other changes. C. define the program development and maintenance costs to be include in the feasibility study. D. ensure that program abnormal terminations and program coding flaws are detected and corrected.
An IS auditor conducting an access controls review in a client-server environment discovers that all printing options are accessible by all users. In this situation, the IS auditor is MOST likely to conclude that: A. exposure is greater since information is available to unauthorized users. B. operating efficiency is enhanced since anyone can print any report, any time. C. operating procedures are more effective since information is easily available. D. user friendliness and flexibility is facilitated since there is a smooth flow of information among users.
Which of the following is a management technique that enables organizations to develop strategically important systems faster while reducing development costs and maintaining quality? A. Function point analysis B. Critical path methodology C. Rapid application development D. Program evaluation review technique
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Which of the following is the MOST effective control procedure for security of a stand-alone small business computer environment? A. Supervision of computer usage B. Daily management review of the trouble log C. Storage of computer media in a locked cabinet D. Independent review of an application system design
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In an EDI process, the device which transmits and receives electronic documents is the: A. communications handler. B. EDI translator. C. application interface. D. EDI interface.
An IS auditor performing a review of the EFT operations of a retailing company would verify that the customers credit limit is checked before funds are transferred by reviewing the EFT: A. system's interface. B. switch facility. C. personal identification number generating procedure. D. operation backup procedures.
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