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Computer Hacking Forensic Investigator CHFI Practice Test

205 questions with instant explanations, domain breakdown, and wrong-answer analysis. Built for the real exam.

Instant feedback after each answer
Full explanations included
Domain score breakdown
Real exam: 240 min
Pass mark: 700%

Sample questions with explanations

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Q1Incident Response and First Responder Skillseasy
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An analyst receives an alert indicating a suspicious process (PID 3342) is making outbound connections on port 443 to an unknown IP. The system is a Windows 10 workstation. Which first responder action is MOST appropriate?

Capture a full memory dump using a tool like FTK Imager (Memory Capture) or DumpIt.Correct
BImmediately disconnect the system from the network to contain the threat.
CCheck the Windows Event Logs for related entries.
DReboot the system to clear any malicious processes from memory.

Capturing a full memory dump (option A) is the most appropriate first responder action because it preserves the volatile state of the suspicious process (PID 3342) and its associated artifacts (e.g., network connections, loaded DLLs, encryption keys) before any further system cha…Read full explanation

Q2Incident Response and First Responder Skillshard
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During an incident response, a first responder needs to collect evidence from a Linux server that is still running. The server has sensitive data and cannot be shut down. Which technique is BEST for acquiring a forensic image of the hard disk?

AUse dd if=/dev/sda of=/mnt/evidence/image.dd conv=noerror,sync
Use dd if=/dev/sda of=/mnt/evidence/image.dd bs=4MCorrect
CUse dd if=/dev/mapper/root of=/mnt/evidence/image.dd
DUse dd if=/dev/sda1 of=/mnt/evidence/image.dd

It uses dd with a 4M block size, which improves acquisition speed while still producing a bit-for-bit forensic image of the entire disk (/dev/sda). The conv=noerror,sync option in A is unnecessary for a live acquisition from a healthy disk and can mask read errors, while B's larg…Read full explanation

Q3Incident Response and First Responder Skillseasy
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A first responder arrives at a scene where a computer is powered on and a user is logged in. An incident is suspected. What should the responder do FIRST?

ABegin capturing a memory dump using a forensic tool.
BPower off the computer immediately to preserve the disk.
Photograph the screen to document the current state.Correct
DAsk the user to log off so the system can be imaged.

The first priority at a live incident scene is to preserve volatile evidence. Photographing the screen captures the current state of the system, including open applications, network connections, and user activity, which can be lost if the system is altered or powered down. This d…Read full explanation

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