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
Answer / guest
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.
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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.
Which of the following would not prevent the loss of an asset but would assist in recovery by transferring part of the risk to a third party? A. Full system backups B. Insurance C. Testing D. Business impact analysis
Which of the following choices BEST ensures the effectiveness of controls related to interest calculation inside an accounting system? A. Re-performance B. Process walk-through C. Observation D. Documentation review
To meet pre-defined criteria, which of the following continuous audit techniques would BEST identify transactions to audit? A. Systems Control Audit Review File and Embedded Audit Modules (SCARF/EAM) B. Continuous and Intermittent Simulation (CIS) C. Integrated Test Facilities (ITF) D. Audit hooks
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.
As part of the business continuity planning process, which of the following should be identified FIRST in the business impact analysis (BIA)? A. Organizational risks, such as single point-of-failure and infrastructure risk B. Threats to critical business processes C. Critical business processes for ascertaining the priority for recovery D. Resources required for resumption of business
The reliability of an application system's audit trail may be questionable if: A. user IDs are recorded in the audit trail. B. the security administrator has read-only rights to the audit file. C. date time stamps record when an action occurs. D. users can amend audit trail records when correcting system errors.
Which of the following is an object-oriented technology characteristic that permits an enhanced degree of security over data? A. Inheritance B. Dynamic warehousing C. Encapsulation D. Polymorphism
The potential for unauthorized system access by way of terminals or workstations within an organization's facility is increased when: A. connecting points are available in the facility to connect laptops to the network. B. users take precautions to keep their passwords confidential. C. terminals with password protection are located in unsecured locations. D. terminals are located within the facility in small clusters under the supervision of an administrator.
E-mail message authenticity and confidentiality is BEST achieved by signing the message using the: A. sender's private key and encrypting the message using the receiver's public key. B. sender's public key and encrypting the message using the receiver's private key. C. the receiver's private key and encrypting the message using the sender's public key. D. the receiver's public key and encrypting the message using the sender's private key.
An IS auditor is reviewing the risk management process. Which of the following is the MOST important consideration during this review? A. Controls are implemented based on cost-benefit analysis. B. The risk management framework is based on global standards. C. The approval process for risk response is in place. D. IT risk is presented in business terms.
Which of the following types of transmission media provide the BEST security against unauthorized access? A. Copper wire B. Twisted pair C. Fiber-optic cables D. Coaxial cables