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Which of the following concerns about the security of an
electronic message would be addressed by digital signatures?
A. Unauthorized reading
B. Theft
C. Unauthorized copying
D. Alteration
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Answer: D
A digital signature includes an encrypted hash total of the
size of the message as it was transmitted by its originator.
This hash would no longer be accurate if the message was
subsequently altered, thus indicating that the alteration
had occurred. Digital signatures will not identify or
prevent any of the other options. The signature would
neither prevent nor deter unauthorized reading, copying or
theft.
| Is This Answer Correct ? | 9 Yes | 0 No |
The PRIMARY purpose of undertaking a parallel run of a new system is to: A. verify that the system provides required business functionality. B. validate the operation of the new system against its predecessor. C. resolve any errors in the program and file interfaces. D. verify that the system can process the production load.
The BEST defense against network eavesdropping is: A. encryption. B. moving the defense perimeter outward. C. reducing the amplitude of the communication signal. D. masking the signal with noise.
To prevent unauthorized entry to the data maintained in a dial-up fast response system, an IS auditor should recommend: A. online terminals be placed in restricted areas. B. online terminals be equipped with key locks. C. ID cards be required to gain access to online terminals. D. online access be terminated after three unsuccessful attempts.
An advantage of the use of hot sites as a backup alternative is that: A. the costs associated with hot sites are low. B. hot sites can be used for an extended amount of time. C. hot sites can be made ready for operation within a short period of time. D. they do not require that equipment and systems software be compatible with the primary site.
The phases and deliverables of a systems development life cycle (SDLC) project should be determined: A. during the initial planning stages of the project. B. after early planning has been completed, but before work has begun. C. through out the work stages based on risks and exposures. D. only after all risks and exposures have been identified and the IS auditor has recommended appropriate controls.
Naming conventions for system resources are important for access control because they: A. ensure that resource names are not ambiguous. B. reduce the number of rules required to adequately protect resources. C. ensure that user access to resources is clearly and uniquely identified. D. ensure that internationally recognized names are used to protect resources.
Which of the following provides the GREATEST assurance of message authenticity? A. The pre-hash code is derived mathematically from the message being sent. B. The pre-hash code is encrypted using the sender's private key. C. Encryption of the pre-hash code and the message using the secret key. D. Sender attains the recipient's public key and verifies the authenticity of its digital certificate with a certificate authority.
A manufacturer has been purchasing materials and supplies for its business through an e-commerce application. Which of the following should this manufacturer rely on to prove that the transactions were actually made? A. Reputation B. Authentication C. Encryption D. Nonrepudiation
Transmitting redundant information with each character or frame to facilitate detection and correction of errors is called: A. feedback error control. B. block sum check. C. forward error control. D. cyclic redundancy check.
Confidential data stored on a laptop is BEST protected by: A. storage on optical disks. B. logon ID and password. C. data encryption. D. physical locks.
Which of the following is an IS control objective? A. Output reports are locked in a safe place. B. Duplicate transactions do not occur. C. System backup/recovery procedures are updated periodically. D. System design and development meet users' requirements.
During a review of the controls over the process of defining IT service levels, an IS auditor would MOST likely interview the: A. systems programmer. B. legal staff. C. business unit manager. D. application programmer.
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