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.
Answer / guest
Answer: B
Encrypting the pre-hash code using the sender's private key
provides assurance of the authenticity of the message.
Mathematically deriving the pre-hash code provides integrity
to the message. Encrypting the pre-hash code and the message
using the secret key provides confidentiality.
Is This Answer Correct ? | 10 Yes | 1 No |
Which of the following is a threat? A. Lack of security B. Loss of goodwill C. Power outage D. Information services
Which of the following is a role of an IS steering committee? A. Initiate computer applications. B. Ensure efficient use of data processing resources. C. Prepare and monitor system implementation plans. D. Review the performance of the systems department.
IS management has recently informed the IS auditor of its decision to disable certain referential integrity controls in the payroll system to provide users with a faster report generator. This will MOST likely increase the risk of: A. data entry by unauthorized users. B. a nonexistent employee being paid. C. an employee receiving an unauthorized raise. D. duplicate data entry by authorized users.
purchase orders issued to vendors have been authorized as per the authorization matrix
When auditing the requirements phase of a software acquisition, the IS auditor should: A. assess the feasibility of the project timetable. B. assess the vendor?s proposed quality processes. C. ensure that the best software package is acquired. D. review the completeness of the specifications.
Which of the following systems or tools can recognize that a credit card transaction is more likely to have resulted from a stolen credit card than from the holder of the credit card? A. Intrusion detection systems B. Data mining techniques C. Firewalls D. Packet filtering routers
The database administrator has recently informed you of the decision to disable certain normalization controls in the database management system (DBMS) software to provide users with increased query performance. This will MOST likely increase the risk of: A. loss of audit trails. B. redundancy of data. C. loss of data integrity. D. unauthorized access to data.
Which of the following is a function of an IS steering committee? A. Monitoring vendor controlled change control and testing B. Ensuring a separation of duties within the information's processing environment C. Approving and monitoring major projects, the status of IS plans and budgets D. Responsible for liaison between the IS department and the end users
Which of the following is necessary to have FIRST in the development of a business continuity plan? A. Risk-based classification of systems B. Inventory of all assets C. Complete documentation of all disasters D. Availability of hardware and software
During an audit of a reciprocal disaster recovery agreement between two companies, the IS auditor would be PRIMARILY concerned about: A. the soundness of the impact analysis. B. hardware and software compatibility. C. differences in IS policies and procedures. D. frequency of system testing.
To affix a digital signature to a message, the sender must first create a message digest by applying a cryptographic hashing algorithm against: A. the entire message and thereafter enciphering the message digest using the sender's private key. B. any arbitrary part of the message and thereafter enciphering the message digest using the sender's private key. C. the entire message and thereafter enciphering the message using the sender's private key. D. the entire message and thereafter enciphering the message along with the message digest using the sender's private key.
An IS auditor discovers that programmers have update access to the live environment. In this situation, the IS auditor is LEAST likely to be concerned that programmers can: A. authorize transactions. B. add transactions directly to the database. C. make modifications to programs directly. D. access data from live environment and provide faster maintenance.