Taylor, a forensic expert, has been assigned to investigate a cyber-attack on an organizational host server. The server has been compromised, and during the investigation, Taylor is tasked with analyzing network traffic to identify the attack ' s point of entry. Using Wireshark, Taylor inspects a packet capture file and notices an unusual pattern of repeated login failure attempts over the FTP protocol. Based on these failed attempts, Taylor suspects a brute-force attack targeting the FTP service. Taylor ' s next step is to confirm whether the attacker was able to successfully log into the FTP server after these failures. To verify the success of the attack, Taylor needs to identify the specific response code from the FTP server that would indicate a successful login. Which of the following Wireshark filters will help Taylor confirm successful FTP login attempts?
Correct Answer: C
Option C is correct because Taylor is trying to confirm whether the brute-force activity against the FTP service eventually resulted in a successful login . CHFI v11 explicitly includes network protocols and packet analysis , gathering evidence via sniffers , and analyze traffic for FTP and SMB password cracking attempts under network-forensics objectives. In FTP analysis, the response code 230 indicates that the user has been logged in successfully. That makes it the key value an investigator would filter for after observing repeated failed attempts. By contrast, 530 is associated with failed authentication or not logged in, 213 is commonly related to file status information, and 550 typically indicates file unavailability or access issues rather than successful authentication. Because CHFI emphasizes recognizing indicators of brute-force attempts and validating attack success through packet analysis, the correct Wireshark filter is ftp.response.code == 230 . This directly confirms whether the attacker moved from repeated FTP login failures to a successful authenticated session.
312-49v11 Exam Question 107
During a cybersecurity investigation involving a data breach at a financial institution, an investigator is tasked with identifying the root cause of the breach and generating a timeline of events that led to the incident. The investigator needs to determine which step in the forensic process will help uncover the sequence of activities, including the vulnerabilities exploited, the time of attack, and the specific actions taken by the attacker. Which of the following forensic techniques is most effective for achieving this goal?
Correct Answer: C
According to the CHFI v11 Forensic Investigation Process and Event Correlation objectives , the forensic technique that enables investigators to reconstruct the sequence of events and determine the root cause of an incident is data analysis . Data analysis is the phase where collected evidence is examined, correlated, and interpreted to extract meaningful insights about attacker behavior. During data analysis, investigators examine logs, timestamps, file system metadata, registry entries, network traffic, memory artifacts, and security alerts to perform timeline analysis , event correlation , and kill chain reconstruction . CHFI v11 explicitly highlights techniques such as timeline creation, event deconfliction, and correlation analysis as essential for identifying the time of attack , vulnerabilities exploited , methods used , and actions performed by the attacker . The other options represent different forensic phases but do not directly achieve the stated goal. Data acquisition focuses on collecting evidence in a forensically sound manner, not interpreting it. Data duplication involves creating forensic copies to preserve evidence integrity. Photographing the crime scene applies primarily to physical forensics and documentation, not digital event reconstruction. CHFI v11 emphasizes that without proper data analysis , raw evidence remains unstructured and cannot support attribution, root cause analysis, or legal prosecution. Therefore, to uncover the complete sequence of malicious activities and generate an accurate incident timeline, Data analysis is the most effective forensic technique. Hence, the correct and CHFI-verified answer is Option C .
312-49v11 Exam Question 108
Sarah, a forensic investigator, is conducting a post-compromise investigation on a company's server that contains sensitive data. To ensure the deleted files do not fall into the wrong hands, she follows a media sanitization procedure . The process involves overwriting the deleted data 6 times with alternating sequences of 0x00 and 0xFF, followed by a final overwrite using the pattern 0xAA . Which of the following media sanitization standards has Sarah followed in this scenario?
Correct Answer: C
According to the CHFI v11 Computer Forensics Fundamentals and Evidence Handling and Sanitization guidelines, media sanitization is a critical process used to ensure that deleted or sensitive data cannot be recovered using forensic techniques. Different international standards define specific overwrite patterns and the number of passes required to securely sanitize storage media. The procedure described- six overwrite passes alternating between 0x00 and 0xFF, followed by a final overwrite with 0xAA -exactly matches the VSITR (Verschlusssache IT Richtlinien) standard. VSITR is a German government-approved data sanitization method that mandates 7 overwrite passes : * Passes 1-6: Alternating 0x00 and 0xFF * Pass 7: Final overwrite with the pattern 0xAA CHFI v11 explicitly references VSITR as a high-assurance sanitization standard , suitable for environments handling classified or highly sensitive information. This method is more rigorous than commonly used standards such as DoD 5220.22-M , which typically uses 3 passes (or a legacy 7-pass variant with different patterns). NAVSO P-5239-26 (MFM) uses different overwrite schemes, and GOST P50739-95 generally involves fewer passes. From a forensic and legal standpoint, following a recognized sanitization standard like VSITR demonstrates due diligence, compliance, and defensibility , especially when preventing data leakage after incidents. Therefore, based on the overwrite pattern and number of passes described, the media sanitization standard followed by Sarah is VSITR , making Option C the correct and CHFI v11-verified answer.
312-49v11 Exam Question 109
Ethan, a forensic investigator, has been assigned to investigate a computer system suspected of being used for malicious online activities. As part of his investigation, he needs to determine which applications have been executed on the system. By reviewing this data, he can identify whether any malicious software has been installed. To gather this information, Ethan needs to examine the correct system directory where traces of the executed applications are stored. Which of the following directories should Ethan examine to find traces of the applications that have been run on the system?
Correct Answer: B
Option B. Prefetch is the correct answer because CHFI v11 explicitly identifies Prefetch Files as an important Windows artifact source. The blueprint includes Extracting Additional Windows OS Artifacts and specifically mentions Identifying TOR Browser Artifacts: Command Prompt, Windows Registry, and Prefetch Files , showing that Prefetch is a recognized source for evidence of program execution. In Windows investigations, Prefetch artifacts help examiners determine whether an application was executed on the system, and they can support timeline analysis by showing execution-related traces. That makes Prefetch especially valuable when the goal is to identify whether suspicious or malicious software ran on the machine. The other options are not the standard Windows artifact location used for this purpose. Process Dumper refers more to tooling than a system directory. Rp.log and Change.log.x are not the well-known Windows execution-trace artifact being tested here. Therefore, under CHFI operating-system forensic objectives, the most appropriate place to examine for traces of executed applications is the Prefetch area.
312-49v11 Exam Question 110
Mark, a forensic investigator, is tasked with investigating a disk image acquired from a suspect machine. He needs to access the files and directories within the disk image to gather evidence. To do so, Mark uses a Python-based tool that integrates with SleuthKit, allowing him to access and analyze the contents of the disk image. Which Python-based tool should Mark use to examine the disk image and view its associated files and directories?
Correct Answer: B
Option B. PyTSK is the best answer because the question specifically asks for a Python-based tool that integrates with The Sleuth Kit (TSK) to examine a disk image and access its files and directories. CHFI v11 explicitly includes Windows and Linux Forensics using Python , Python Digital Forensics Basics , and File System Analysis Using Autopsy and The Sleuth Kit (TSK) . PyTSK is the Python binding or interface commonly used to work with Sleuth Kit functionality programmatically. That makes it the most natural answer when the task involves Python-based analysis of image contents. FTK Imager and Autopsy are important forensic tools, but they are not the specific Python- based interface described. py.apipkg does not fit the forensic image-analysis role being tested here. Because the question combines Python with Sleuth Kit-based disk image access , the answer most consistent with CHFI's Python and file-system-analysis objectives is PyTSK . It allows investigators to script file and directory examination in a structured, repeatable forensic workflow.
