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| Certification Vendor: | EC-Council |
|---|---|
| Exam Name: | EC-Council Digital Forensics Essentials (DFE) |
| Exam Number: | 112-57 |
| Available Languages: | English |
| Recommended Training: | EC-Council Digital Forensics Essentials Training |
| Exam Registration: | EC-Council Official Certification Page |
| Sample Questions: | EC-COUNCIL 112-57 Sample Questions |
| Exam Way: | Online, self-paced training with assessment (EC-Council iLearn platform or authorized delivery partners) |
| Pre Condition: | No formal prerequisites required; basic understanding of cybersecurity is recommended. |
| Official Syllabus URL: | https://www.eccouncil.org/programs/digital-forensics-essentials-dfe/ |
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NEW QUESTION # 19
Below is an extracted Apache error log entry.
"[Wed Aug 28 13:35:38.878945 2020] [core:error] [pid 12356:tid 8689896234] [client 10.0.0.8] File not found: /images/folder/pic.jpg" Identify the element in the Apache error log entry above that represents the IP address from which the request was made.
Answer: C
Explanation:
Apache error logs record key metadata about server-side events in a structured format that is widely used in web attack investigations. In the provided entry, each bracketed field represents a specific attribute: the first bracket contains the timestamp, the next contains the module and severity (e.g.,core:error), then the process
/thread identifiers (pidandtid), followed by the client identifier. The client field is explicitly labeled[client ...], and it captures thesource IP address(or sometimes hostname) that initiated the HTTP request which resulted in the logged error.
Here,[client 10.0.0.8]indicates that the request originated from IP address10.0.0.8. This is the critical element investigators use to attribute suspicious activity (such as probing for missing files, scanning directories, or exploitation attempts) to a specific network source. The other values are not the client IP:13:35:38.878945is the time component of the timestamp,12356is the Apache process ID, and8689896234is the thread ID handling the request. Therefore, the IP address from which the request was made is10.0.0.8 (C).
NEW QUESTION # 20
Which of the following measures is defined as the time to move read or write disc heads from one point to another on the disk?
Answer: D
Explanation:
Seek timeis the specific performance measure that describes how long a hard disk drive's actuator takes tomove the read/write heads across the plattersfrom the current track (cylinder) to the target track where the requested data resides. In traditional magnetic HDDs, the heads must be physically repositioned before any sector can be read or written, making seek time a core component of mechanical latency.
Digital forensics materials emphasize understanding this distinction because HDD mechanical behavior affectsacquisition duration, the feasibility of repeated scans, and why imaging or carving operations can take longer on fragmented media. It also helps explain why solid-state drives (SSDs), which have no moving heads, do not have seek time in the same sense and therefore behave differently during large-scale reads.
The other choices are broader or unrelated:access timetypically refers to thetotal time to retrieve data, commonly combiningseek time + rotational latency + transfer time.Delay timeis not the standard term for head movement in disk performance definitions.Mean timeis incomplete as written and is usually part of reliability metrics like mean time between failures, not head positioning. Therefore, the correct measure for head movement time isSeek time (C).
NEW QUESTION # 21
Which of the following MAC forensic data components saves file information and related events using a token with a binary structure?
Answer: D
Explanation:
On macOS, theBasic Security Module (BSM)provides the system'saudit framework, which records security- relevant activity such asfile access, process execution, authentication events, privilege changes, and other system calls. A key forensic characteristic of BSM auditing is that events are written asbinary audit records composed of "tokens."Each token represents a structured piece of the event (for example: subject/user identity, process ID, command arguments, path, return value, timestamps), and tokens are assembled into complete audit records. Because these audit logs arebinary and tokenized, they are compact, consistent, and designed for reliable parsing and evidentiary reconstruction-important when building timelines of file- related actions and attributing them to specific users and processes.
The other options do not match the "binary token" description.Command-line inputsmay be stored in shell history files but are plain text and not tokenized binary audit records.User accountartifacts (e.g., directory services, plist files) describe identities and settings, not tokenized event logs.Kexts(kernel extensions) are drivers/modules; while they can affect system behavior, they are not the macOS component that stores file
/event records in a binary token format. Therefore, the correct answer isBasic Security Module (C).
NEW QUESTION # 22
Identify the malware analysis technique in which the investigators must take a snapshot of the baseline state of the forensic workstation before malware execution.
Answer: D
Explanation:
The technique described-taking a snapshot of the baseline state of the forensic workstation before executing malware-aligns withMonitoring host integrity. In malware forensics, investigators often perform controlled execution (dynamic analysis) and need a reliable way to identifywhat changed on the systemas a direct result of the malware run. Host integrity monitoring is a structured approach where the examiner first captures aknown-good baselineof critical system elements such as file system state (key directories, system binaries), registry/configuration state, running services, installed drivers, scheduled tasks, and sometimes hash inventories of important files. After malware execution, the investigator captures a second snapshot and performsdifferential comparisonto determine newly created/modified files, persistence mechanisms, configuration changes, dropped payloads, and tampering attempts.
This baseline-before/after comparison is fundamental for attributing changes to the sample, supporting repeatability, and documenting evidence in a defensible manner. The other options do not require a workstation baseline snapshot in this sense:online malware scanningchecks a file against signatures/reputation services;string searchextracts readable strings from binaries; andfile fingerprintingtypically refers to hashing to uniquely identify a file, not system-wide state comparison. Therefore, the correct answer isMonitoring host integrity (B).
NEW QUESTION # 23
Wesley, a professional hacker, deleted a confidential file in a compromised system using the "/bin/rm/" command to deny access to forensic specialists.
Identify the operating system on which Don has performed the file carving act.
Answer: B
Explanation:
The command path /bin/rm is a hallmark of UNIX/POSIX-style operating systems, where core userland utilities are commonly stored under directories such as /bin, /sbin, and /usr/bin. The utility rm (remove) is the standard UNIX command used to delete directory entries that reference a file's data blocks on disk. This layout and command structure do not match Windows, whichuses different filesystem conventions (drive letters, backslashes, and Windows-native executables) and does not provide /bin/rm as a native path. Android, while Linux-kernel-based, typically exposes shell utilities through environments like /system/bin (and newer systems may use toybox/busybox variants), not the classic /bin hierarchy expected on general-purpose UNIX systems. Between the remaining options, both Linux and macOS are UNIX-like and can include an rm command; however, in digital forensics training and examination contexts, the explicit reference to /bin/rm is most commonly used to indicate a Linux/UNIX command-line environment on a compromised host.
Therefore, the best single-choice answer from the provided options is Linux (D).
NEW QUESTION # 24
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