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| Certification Vendor: | EC-Council |
|---|---|
| Exam Name: | CHFI v11 - Computer Hacking Forensic Investigator |
| Exam Number: | 312-49v11 |
| Exam Duration: | 240 minutes |
| Exam Format: | Scenario-based Questions, Multiple Choice Questions |
| Exam Price: | USD 550 (varies by region) |
| Real Exam Qty: | 150 (typical) |
| Passing Score: | Approximately 70% |
| Related Certifications: | ECIH (EC-Council Certified Incident Handler) CEH (Certified Ethical Hacker) |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Recommended Training: | CHFI Certification Preparation Resources EC-Council CHFI Official Training (iLearn) |
| Exam Registration: | EC-Council Exam Registration EC-Council Certification Portal |
| Sample Questions: | EC-COUNCIL 312-49v11 Sample Questions |
| Exam Way: | Computer-based online or authorized test center exam |
| Pre Condition: | Recommended: Basic knowledge of networking, operating systems, and cybersecurity fundamentals. CEH certification is beneficial but not mandatory. |
| Official Syllabus URL: | https://www.eccouncil.org/programs/computer-hacking-forensic-investigator-chfi/ |
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問題 #96
In a suspected cyberattack scenario, a seasoned Computer Hacking Forensics Investigator (CHFI) comes across evidence that the attacker used cloud infrastructure to host attack toolkits and launch the attack. What should be the investigator's primary approach to unravel the tracks covered by the attacker and retrieve evidence?
答案：C
問題 #97
A digital forensic investigator is examining a mobile device recovered from a suspect in a cybercrime case. The device appears to be running a custom operating system configuration that allows for elevated privileges and unrestricted access to system resources.
What is the most likely method used to achieve this configuration?
答案：D
解題說明：
According to the CHFI v11 Mobile and IoT Forensics domain, rooting an Android device is the most common and direct method used to obtain elevated (superuser) privileges and unrestricted access to system resources. Rooting allows a user to bypass Android's built-in security restrictions and gain full control over the operating system, including access to protected directories, system binaries, kernel parameters, and hardware interfaces.
CHFI v11 explains that once an Android device is rooted, the user can modify system files, install unauthorized applications, disable security controls, manipulate logs, and conceal malicious activity--making rooting a frequent technique in cybercrime and anti-forensics scenarios. From a forensic perspective, rooting significantly impacts evidence integrity and is often identified through artifacts such as the presence of su binaries, modified boot images, or root management applications.
While installing a custom ROM does modify the operating system, it does not inherently guarantee unrestricted system access unless the device is rooted. Jailbreaking applies specifically to iOS devices, not Android. Exploiting an iOS firmware vulnerability may lead to jailbreaking, but the scenario does not indicate an iOS environment.
CHFI v11 emphasizes that identifying whether a device has been rooted is critical during mobile investigations, as it affects data acquisition methods, trustworthiness of artifacts, and anti-forensic risk assessment.
問題 #98
A rising tech startup suffered a severe blow when its RAID 5 array crashed, rendering crucial project data inaccessible. Nick, a digital forensic expert, has been appointed to salvage as much data as possible from the damaged RAID. Upon examination, he found that two out of the four hard drives in the array were severely damaged. Given the importance and the sheer volume of lost data, it is imperative that Nick retrieves the lost information. The RAID controller was not salvageable, and no documentation was available on the configuration of the disks in the RAID array. What should be Nick ' s course of action in this scenario?
答案：C
解題說明：
Option D is the best answer because a RAID 5 array can typically tolerate the failure of only one drive . In this scenario, two of the four drives are severely damaged , which means the array cannot be reconstructed normally from the remaining disks alone. Since the lost data is critical and the controller is unavailable, the immediate priority is to recover as much physical disk data as possible from the damaged members through specialized hardware recovery .
Option A might be appropriate only if enough readable disks remained to reconstruct the array manually.
Option C is also unlikely to succeed when two required disks are severely damaged and no configuration data is available. Option B is too limited because carving individual surviving disks separately does not restore the RAID's logical structure or parity-dependent data layout.
From a CHFI perspective, RAID recovery decisions depend on the type of RAID, number of failed disks, and whether sufficient components remain for logical reconstruction. Because this RAID 5 has exceeded its normal fault tolerance, the most appropriate course is to send the damaged drives for professional hardware recovery before attempting further reconstruction.
問題 #99
Tom, a digital forensics investigator, is assigned to investigate a potential insider threat at a company. He arrives at the scene to find that a workstation has been compromised. The suspect, a former employee, allegedly used a malicious USB device to access sensitive files before being caught. Tom quickly begins his investigation, and after isolating the workstation from the network, he powers up the system in a controlled environment. His first task is to collect data stored in the system ' s memory, including active processes, network connections, and clipboard content. Tom knows that this type of data can provide critical information about the actions of the suspect during the time of the attack. Why is Tom prioritizing this data over other types of evidence in this case?
答案：B
解題說明：
Option B is the correct answer because CHFI v11 explicitly emphasizes Live Acquisition , Order of Volatility , Collecting Volatile Information and Non-Volatile Information , and the need to acquire volatile evidence before it disappears. Memory-resident artifacts such as active processes, network connections, clipboard contents, and session data are highly time-sensitive and may be lost the moment the system is powered down or otherwise altered.
That is why Tom is prioritizing memory collection first. In forensic methodology, volatile data is often the most perishable , not the most stable. Non-volatile data remains on disk and can usually be acquired afterward, but RAM-based evidence may vanish quickly. This is especially important in insider-threat or live- system cases, where the most revealing traces of user behavior may still exist only in memory at the time of seizure.
Options A , C , and D all misunderstand the key principle being tested. The correct reason is that volatile data can be lost if not collected promptly , which makes it the highest priority in a live response under CHFI acquisition rules.
問題 #100
During a cyber espionage investigation at a defense contractor in Washington, D.C., forensic analysts used shared intelligence feeds to pinpoint unusual network beacons matching known adversary tactics, enabling them to trace the intrusion back to specific command-and-control servers and validate the scope of data exfiltration. Which role of threat intelligence in computer forensics is primarily demonstrated in this scenario?
答案：C
解題說明：
The best answer is D because the scenario emphasizes matching observed behavior to known adversary tactics and infrastructure. The analysts are using intelligence feeds to recognize beaconing behavior, link it to command-and-control servers, and correlate the intrusion with known attack activity. That is more than just discovering generic indicators of compromise. It is the recognition and correlation of known attack patterns.
CHFI v11 includes the role of threat intelligence in computer forensics, and one of its practical benefits is helping investigators relate local evidence to broader adversary tradecraft, campaigns, and infrastructure patterns. Option B is plausible, but it is narrower and does not capture the pattern-matching and campaign- level linkage described. Option A focuses on early identification, which is not the main point here, and option C is too broad. In forensic reasoning, when intelligence is used to connect beacons, tactics, and command infrastructure into a recognizable adversary pattern, the most accurate role is recognizing and correlating known attack patterns. That is the clearest fit for the investigative activity described in the question.
問題 #101
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