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CISA Practice Questions & 100% Correct Answers
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In a public key infrastructure (PKI), which of the following may be relied upon to prove that an online transaction was authorized by a specific customer? Correct A. Nonrepudiation B. Encryption C. Authentication D. Integrity . :~~ You are correct, the answer is A. A. Nonrepudiation, ach...

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Document information

  • September 9, 2024
  • 286
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • cisa practice questions 100 correct answers
  • in a public key infrastructure pki which of the

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  • CISA
  • CISA

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1 | P a g e | © copyright 2024/2025 | Grade A+




CISA Practice Questions & 100%
Correct Answers
In a public key infrastructure (PKI), which of the following may be relied upon to

prove that an online transaction was authorized by a specific customer?




Correct A. Nonrepudiation




B. Encryption




C. Authentication




D. Integrity




.


✓ :~~ You are correct, the answer is A.




A. Nonrepudiation, achieved through the use of digital signatures, prevents the

senders from later denying that they generated and sent the message.




Master01 | September, 2024/2025 | Latest update

, 2 | P a g e | © copyright 2024/2025 | Grade A+


B. Encryption may protect the data transmitted over the Internet, but may not

prove that the transactions were made.




C. Authentication is necessary to establish the identification of all parties to a

communication.




D. Integrity ensures that transactions are accurate but does not provide the

identification of the customer




Which of the following BEST ensures the integrity of a server's operating system

(OS)?




A. Protecting the server in a secure location




B. Setting a boot password




Correct C. Hardening the server configuration




D. Implementing activity logging

✓ :~~ You are correct, the answer is C.




Master01 | September, 2024/2025 | Latest update

, 3 | P a g e | © copyright 2024/2025 | Grade A+




A. Protecting the server in a secure location is a good practice, but does not

ensure that a user will not try to exploit logical vulnerabilities and compromise the

operating system (OS).




B. Setting a boot password is a good practice, but does not ensure that a user will

not try to exploit logical vulnerabilities and compromise the OS.




C. Hardening a system means to configure it in the most secure manner (install

latest security patches, properly define access authorization for users and

administrators, disable insecure options and uninstall unused services) to prevent

nonprivileged users from gaining the right to execute privileged instructions and,

thus, take control of the entire machine, jeopardizing the integrity of the OS.




D. Activity logging has two weaknesses in this scenario—it is a detective control

(not a preventive one), and the attacker who already gained privileged access can

modify logs or disable them.




The IS auditor is reviewing an organization's human resources (HR) database

implementation. The IS auditor discovers that the database servers are clustered

for high availability, all default database accounts have been removed and

database audit logs are kept and reviewed on a weekly basis. What other area




Master01 | September, 2024/2025 | Latest update

, 4 | P a g e | © copyright 2024/2025 | Grade A+


should the IS auditor check to ensure that the databases are appropriately

secured?




A. Database digital signatures




Incorrect B. Database encryption nonces and other variables




C. Database media access control (MAC) address authentication




D. Database initialization parameters

✓ :~~ You answered B. The correct answer is D.




A. Digital signatures are used for authentication and nonrepudiation, and are not

commonly used in databases. As a result, this is not an area in which the IS auditor

should investigate.




B. A nonce is defined as a "parameter that changes over time" and is similar to a

number generated to authenticate one specific user session. Nonces are not

related to database security (they are commonly used in encryption schemes).




Master01 | September, 2024/2025 | Latest update

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