The security level of a private key system depends on the
number of:
A. encryption key bits.
B. messages sent.
C. keys.
D. channels used.
Answer / guest
Answer: A
The security level of a private key system depends on the
number of encryption key bits. The larger the number of
bits, the more difficult it would be to understand or
determine the algorithm. The security of the message will
depend on the encryption key bits used. More than keys by
themselves, it's the algorithm and its complexity, which
make the content more secured. Channels, which could be open
or secure, are the mode for sending the message.
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Sign-on procedures include the creation of a unique user ID and password. However, an IS auditor discovers that in many cases the user name and password are the same. The BEST control to mitigate this risk is to: A. change the company's security policy. B. educate users about the risk of weak passwords. C. build in validations to prevent this during user creation and password change. D. require a periodic review of matching user ID and passwords for detection and correction.
As updates to an online order entry system are processed, the updates are recorded on a transaction tape and a hard-copy transaction log. At the end of the day, the order entry files are backed up on tape. During the backup procedure, a drive malfunctions and the order entry files are lost. Which of the following are necessary to restore these files? A. The previous day's backup file and the current transaction tape B. The previous day's transaction file and the current transaction tape C. The current transaction tape and the current hard-copy transaction log D. The current hard-copy transaction log and the previous day's transaction file
Which of the following tasks is performed by the same person in a well-controlled information processing facility/computer center? A. Security administration and management B. Computer operations and system development C. System development and change management D. System development and systems maintenance
Which of the following is a control over component communication failure/errors? A. Restricting operator access and maintaining audit trails B. Monitoring and reviewing system engineering activity C. Providing network redundancy D. Establishing physical barriers to the data transmitted over the network
The device that connects two networks at the highest level of the ISO-OSI framework ( i.e., application layer) is a A. Gateway B. Router C. Bridge D. Brouter
Failure to adequately define or manage the requirements for a system can result in a number of risks. The GREATEST risk is: A. inadequate user involvement. B. inadequate allocation of resources. C. scope creep. D. an incorrect estimation of the critical path.
A B-to-C e-commerce web site as part of its information security program wants to monitor, detect and prevent hacking activities and alert the system administrator when suspicious activities occur. Which of the following infrastructure components could be used for this purpose? A. Intrusion detection systems B. Firewalls C. Routers D. Asymmetric encryption
During an audit of a telecommunications system the IS auditor finds that the risk of intercepting data transmitted to and from remote sites is very high. The MOST effective control for reducing this exposure is: A. encryption. B. callback modems. C. message authentication. D. dedicated leased lines.
When a PC that has been used for the storage of confidential data is sold on the open market the: A. hard disk should be demagnetized. B. hard disk should be mid-level formatted.s C. data on the hard disk should be deleted. D. data on the hard disk should be defragmented.
The implementation of cost-effective controls in an automated system is ultimately the responsibility of the: A. system administrator. B. quality assurance function. C. business unit management. D. chief of internal audit.
Which of the following is MOST effective in controlling application maintenance? A. Informing users of the status of changes B. Establishing priorities on program changes C. Obtaining user approval of program changes D. Requiring documented user specifications for changes
Which of the following is the MOST effective type of antivirus software? A. Scanners B. Active monitors C. Integrity checkers D. Vaccines