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To check the performance of flow and error control, an IS
auditor should focus the use of a protocol analyzer on which
of the following layers?
A. Network
B. Transport
C. Data link
D. Application
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Answer / uma
Data Link Layer. Flow control coordinates the amount of data that can be sent before receiving acknowledgement.Error control in the same layer is based on Automatic Request repeat which implies re transmission of data
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Answer / guest
Answer: B
Although a protocol analyzer would work at all of the OSI
model layers the only layer that handles flow and error
control is the transport layer.
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An IS auditor has recently discovered that because of a shortage of skilled operations personnel, the security administrator has agreed to work one late-night shift a month as the senior computer operator. The MOST appropriate course of action for the IS auditor is to: A. advise senior management of the risk involved. B. agree to work with the security officer on these shifts as a form of preventative control. C. develop a computer-assisted audit technique to detect instances of abuses of this arrangement. D. review the system log for each of the late-night shifts to determine whether any irregular actions occurred.
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