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NEW QUESTION # 76
Cheryl, a forensic expert, was recruited to investigate a malicious activity performed by an anonymous hackers' group on an organization's systems. Using an automated tool, Cheryl was able to extract the malware file and analyze the assembly code instructions, which helped him understand the malware's purpose.
Which of the following tools helped Cheryl extract and analyze the assembly code of the malware?
Answer: A
Explanation:
To understand a malware sample's purpose at the instruction level, investigators usereverse-engineering toolsthat candisassemblecompiled binaries intoassembly codeand often allowinteractive debuggingto observe runtime behavior (API calls, unpacking routines, decryption loops, process injection, and control-flow decisions).OllyDbgis a classic Windows user-mode debugger widely referenced in malware analysis workflows because it provides an integrated view ofdisassembly, CPU registers, memory, breakpoints, and execution tracing. This makes it suitable for extracting behavioral insight from the actual assembly instructions, especially when malware uses obfuscation or packers that require stepping through execution to reach the real payload.
The other options do not primarily perform assembly-level analysis.VirtualBoxandVMware vSphereare virtualization platforms; they help safely run malware in isolated environments, but they are not disassemblers
/debuggers for examining assembly instructions.QualNetis a network simulation tool used for modeling network behavior, not binary reverse engineering. Because the question specifically emphasizesanalyzing assembly code instructionsto understand malware purpose, the correct tool among the choices isOllyDbg (C).
NEW QUESTION # 77
Given below are different steps involved in event correlation.
Event masking
Event aggregation
Root cause analysis
Event filtering
Identify the correct sequence of steps involved in event correlation.
Answer: C
Explanation:
In event correlation (as applied in SOC/SIEM-driven investigations), the workflow typically starts byreducing complexityandnormalizing what "one incident" looks likebefore attempting conclusions about causality.Event aggregation (2)is performed early to combine multiple low-level, related events (for example repeated authentication failures, repeated firewall denies, or multiple IDS hits for the same signature) into higher-level
"grouped" records. This prevents analysts from treating every raw log line as a separate incident and makes correlation computationally and operationally feasible.
Next,event masking (1)suppresses events that are already known to be irrelevant or repetitive in a way that does not add investigative value (for example, routine scheduled scans, approved admin tools, or duplicate alerts already represented in the aggregated set). After masking,event filtering (4)further removes remaining noise using rules, thresholds, whitelists, time windows, or relevance criteria (scope, asset criticality, and known-benign sources), leaving a cleaner dataset that represents probable security-relevant activity.
Only after the dataset is consolidated and noise-reduced doesroot cause analysis (3)become reliable, because RCA depends on a clear chain of correlated events to identify the initiating action and propagation path.
Hence the correct sequence is2 # 1 # 4 # 3 (Option B).
NEW QUESTION # 78
Jack, a forensic investigator, was appointed to investigate a Windows-based security incident. In this process, he employed an Autopsy tool to recover the deleted files from unallocated space, which helps in gathering potential evidence.
Which of the following functions of Autopsy helped Jack recover the deleted files?
Answer: A
Explanation:
When a file is deleted on common file systems, the operating system typically removes the directory reference and marks the previously used clusters/blocks asunallocated, but the underlying file content may remain on disk until it is overwritten. Digital forensics procedures emphasize that recovering such deleted content often requires examining unallocated space rather than relying only on file system metadata.Autopsy's "Data Carving"function is specifically intended for this purpose: it scans unallocated space (and sometimes slack space) forfile signatures(headers/footers and internal structure patterns) and reconstructs recoverable files even when the original filename, path, or metadata is missing.
This directly matches the scenario: Jack recovered deleted files fromunallocated space, which is the classic use case for carving. The other options in Autopsy support different investigative goals.Timeline analysiscorrelates timestamps from multiple artifacts to reconstruct sequences of activity, but it does not itself reconstruct deleted file content from raw disk areas.Web artifactsfocuses on browser history, downloads, cookies, and related traces.Multimediahelps categorize and analyze media files (e.g., images/videos), but it is not the primary mechanism for recovering deleted data from unallocated space. Therefore, the Autopsy function that enabled the recovery described isData carving (D)
NEW QUESTION # 79
Which of the following file systems is developed by Apple to support Mac OS in its proprietary Macintosh system and replace the Macintosh File System (MFS)?
Answer: A
Explanation:
Apple's original Macintosh computers initially usedMFS (Macintosh File System), which had important limitations, including a relatively flat directory model and constraints that became problematic as storage sizes and file organization needs grew. To address these limitations, Apple introducedHFS (Hierarchical File System)-explicitly designed to replace MFS and provide a truehierarchical directory structure(folders within folders), improved metadata handling, and better scalability for the Macintosh platform. From a digital forensics perspective, this historical transition matters because examiners may encounter legacy Macintosh media or disk images where understanding the file system family helps interpret catalog structures, allocation behavior, and metadata artifacts.
The other options do not fit the "replace MFS" requirement.NTFSis Microsoft's Windows file system.APFS (Apple File System)is Apple's modern file system introduced much later (primarily for SSDs, with features like snapshots and strong encryption support) and it replaced HFS+ in newer macOS versions-not MFS.
Filesystem Hierarchy Standard (FHS)is a UNIX/Linux directory layout standard, not a Macintosh disk file system. Therefore, the Apple-developed file system that replaced MFS isHierarchical File System (HFS), which corresponds toOption D.
NEW QUESTION # 80
Which of the following folders of macOS stores all the files, documents, applications, library folders, etc.
pertaining to a particular user?
Answer: D
Explanation:
In macOS, each user account is assigned aHome Directorythat serves as the primary container for that user's data and profile-specific configuration. This directory typically resides under/Users/<username>/and includes standard subfolders such asDesktop,Documents,Downloads,Pictures,Movies,Music, and crucially the user' sLibraryfolder (~/Library). From a digital forensics standpoint, the Home Directory is one of the most important evidence locations because it holds user-generated content and a large volume of user activity artifacts: application preferences and settings (plist files), browser data, caches, saved state, key application databases, recent items, and other per-user traces. Although some applications are installed system-wide under
/Applications, macOS also supports per-user application storage and extensive per-user data under the Home Directory's Library structure.
The other options are not user-data containers.Spotlightis a search/indexing service (it creates indexes, not a user's complete data store).Time Machineis a backup mechanism that stores versioned backups rather than the live per-user working directory.Finderis the graphical file manager, not a storage folder. Therefore, the folder that stores files and user-specific libraries for a particular user is theHome Directory (D).
NEW QUESTION # 81
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