RELIABLE DIGITAL-FORENSICS-IN-CYBERSECURITY EXAM GUIDE & DIGITAL-FORENSICS-IN-CYBERSECURITY EXAM QUESTION

Reliable Digital-Forensics-in-Cybersecurity Exam Guide & Digital-Forensics-in-Cybersecurity Exam Question

Reliable Digital-Forensics-in-Cybersecurity Exam Guide & Digital-Forensics-in-Cybersecurity Exam Question

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WGU Digital Forensics in Cybersecurity (D431/C840) Course Exam Sample Questions (Q28-Q33):

NEW QUESTION # 28
A company has identified that a hacker has modified files on one of the company's computers. The IT department has collected the storage media from the hacked computer.
Which evidence should be obtained from the storage media to identify which files were modified?

  • A. Private IP addresses
  • B. File timestamps
  • C. Operating system version
  • D. Public IP addresses

Answer: B

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
File timestamps, including creation time, last modified time, and last accessed time, are fundamental metadata attributes stored with each file on a file system. When files are modified, these timestamps usually update, providing direct evidence about when changes occurred. Examining file timestamps helps forensic investigators identify which files were altered and estimate the time of unauthorized activity.
* IP addresses (private or public) are network-related evidence, not stored on the storage media's files directly.
* Operating system version is system information but does not help identify specific file modifications.
* Analysis of file timestamps is a standard forensic technique endorsed by NIST SP 800-86 (Guide to Integrating Forensic Techniques into Incident Response) for determining file activity and changes on digital media.


NEW QUESTION # 29
The chief information security officer of a company believes that an attacker has infiltrated the company's network and is using steganography to communicate with external sources. A security team is investigating the incident. They are told to start by focusing on the core elements of steganography.
What are the core elements of steganography?

  • A. Payload, copyright, channel
  • B. Hash, nonce, salt
  • C. File, metadata, header
  • D. Encryption, decryption, key

Answer: A

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
The core elements of steganography include:
* Payload: the hidden data or message,
* copyright: the medium (e.g., image, audio file) containing the payload,
* Channel: the method or path used to deliver the copyright with the payload embedded.
* Understanding these elements helps investigators detect and analyze steganographic content.
Reference:NIST SP 800-101 and steganography research identify these core components as fundamental to steganographic communication.


NEW QUESTION # 30
What is one purpose of steganography?

  • A. To compress large files
  • B. To encrypt data for security
  • C. To delete files securely
  • D. To deliver information secretly

Answer: D

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Steganography is used to conceal information within other seemingly innocuous data, such as embedding messages inside image files, allowing secret delivery of information without detection.
* Unlike encryption, steganography hides the existence of the message itself.
* It is an anti-forensic technique used to evade detection.
Reference:NIST and digital forensics literature describe steganography as covert communication methodology.


NEW QUESTION # 31
Which method is used to implement steganography through pictures?

  • A. Metadata alteration
  • B. File compression
  • C. Least Significant Bit (LSB) insertion
  • D. Encrypting image pixels

Answer: C

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Least Significant Bit (LSB) insertion involves modifying the least significant bits of image pixel data to embed hidden information. Changes are imperceptible to the human eye, making this a common steganographic technique.
* LSB insertion is widely studied and targeted in steganalysis.
* It allows covert data embedding without increasing file size significantly.
Reference:Forensic and anti-forensics manuals reference LSB as a standard image steganography method.


NEW QUESTION # 32
A user at a company attempts to hide the combination to a safe that stores confidential information in a data file called vacationdetails.doc.
What is vacationdetails.doc called, in steganographic terms?

  • A. Channel
  • B. Payload
  • C. Snow
  • D. copyright

Answer: D

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
In steganography, the file that hides secret information is called thecarrier. The copyright file appears normal and contains embedded hidden data (the payload).
* Payload refers to the actual secret data hidden inside the copyright.
* Snow refers to random noise or artifacts, often in images or files.
* Channel refers to the medium or communication path used to transmit data.
Thus,vacationdetails.docis the copyright file containing the hidden information.
Reference:Standard steganography literature and forensic documentation define the copyright as the file used to conceal payload data.


NEW QUESTION # 33
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