Answer / guest

Answer: C

Attenuation is a signal degradation (decrease in amplitude)
that occurs as a signal propagates along a transmission
medium. This is seen particularly when the medium is copper
wire. Noise is also a signal degradation that refers to a
large amount of electrical fluctuation that can interfere
with the interpretation of the signal by the receiver.
Crosstalk is one example of noise where unwanted electrical
coupling between adjacent lines causes the signal in one
wire to be picked up by the signal in an adjacent wire.
Delay distortion can result in a misinterpretation of a
signal that results from transmitting a digital signal with
varying frequency components. The various components arrive
at the receiver with varying delays.

A programmer managed to gain access to the production library, modified a program that was then used to update a sensitive table in the payroll database and restored the original program. Which of the following methods would MOST effectively detect this type of unauthorized changes? A. Source code comparison B. Executable code comparison C. Integrated test facilities (ITF) D. Review of transaction log files

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The role of IT auditor in complying with the Management Assessment of Internal Controls (Section 404 of the Sarbanes-Oxley Act) is: A. planning internal controls B. documenting internal controls C. designing internal controls D. implementing internal controls

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Which of the following statements relating to packet switching networks is CORRECT? A. Packets for a given message travel the same route. B. Passwords cannot be embedded within the packet. C. Packet lengths are variable and each packet contains the same amount of information. D. The cost charged for transmission is based on packet, not distance or route traveled.

1 Answers   Karura Community Chapel,

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Passwords should be: A. assigned by the security administrator. B. changed every 30 days at the discretion of the user. C. reused often to ensure the user does not forget the password. D. displayed on the screen so that the user can ensure that it has been entered properly.

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An IS auditor reviewing back-up procedures for software need only determine that: A. object code libraries are backed up. B. source code libraries are backed up. C. both object and source codes libraries are backed up. D. program patches are maintained at the originating site.

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Which of the following testing methods is MOST effective during the initial phases of prototyping? A. System B. Parallel C. Volume D. Top-down

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Which of the following is a control over database administration activities? A. A database checkpoint to restart processing after a system failure B. Database compression to reduce unused space C. Supervisory review of access logs D. Backup and recovery procedures to ensure database availability

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With the help of the security officer, granting access to data is the responsibility of: A. data owners. B. programmers. C. system analysts. D. librarians.

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Which of the following types of controls is designed to provide the ability to verify data and record values through the stages of application processing? A. Range checks B. Run-to-run totals C. Limit checks on calculated amounts D. Exception reports

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A primary reason for an IS auditor's involvement in the development of a new application system is to ensure that: A. adequate controls are built into the system. B. user requirements are satisfied by the system. C. sufficient hardware is available to process the system. D. data are being developed for pre-implementation testing of the system.

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Compensating controls are intended to: A. reduce the risk of an existing or potential control weakness. B. predict potential problems before they occur. C. remedy problems discovered by detective controls. D. report errors or omissions.

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Reconfiguring which of the following firewall types will prevent inward downloading of files through the file transfer protocol (FTP)? A. Circuit gateway B. Application gateway C. Packet filter D. Screening router

1 Answers   Vizag Steel,

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