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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 # 29
Which of the following techniques is used to compute the hash value for a given binary code to uniquely identify malware or periodically verify changes made to the binary code during analysis?
Answer: C
Explanation:
File fingerprintingis the forensic technique of generating acryptographic hash(such as MD5, SHA-1, SHA-
256) for a file to create aunique, repeatable identifierfor that exact byte sequence. In malware forensics, analysts compute hashes to (1)uniquely identifya suspicious binary across cases and tools, (2) confirm whether two samples are identical or different variants, and (3)verify integrity over time-for example, ensuring the sample did not change during copying, extraction, sandbox handling, or during an analysis workflow that might inadvertently modify the file (e.g., patching, unpacking outputs, or tool-side normalization). Re-hashing at different stages provides a defensible way to demonstrate that the analyzed artifact is the same as the acquired artifact, supporting evidentiary integrity and chain-of-custody principles commonly emphasized in digital forensics documentation.
The other techniques do not primarily serve this purpose.Strings searchextracts readable text fragments but does not produce a unique integrity identifier.Local and online malware scanninguses signatures/reputation and may identify families, but it is not an integrity verification mechanism for the exact file bytes.Malware disassemblyhelps understand logic and instructions, not compute an identity hash. Therefore, the correct answer isFile fingerprinting (A).
NEW QUESTION # 30
Which of the following layers of the TCP/IP model includes protocols such as Frame Relay, SMDS, Fast Ethernet, SLIP, PPP, FDDI, ATM, Ethernet, and ARP to enable a machine to deliver the desired data to other hosts in the same network?
Answer: B
Explanation:
The protocols listed-Frame Relay, SMDS, Fast Ethernet, SLIP, PPP, FDDI, ATM, Ethernet, and ARP- belong to the portion of the TCP/IP model responsible forlocal network deliveryand direct interaction with the physical media and link-layer addressing. In TCP/IP terminology, this is theNetwork Access layer(also called the Link layer or Network Interface layer). It combines functions that map closely to the OSIData LinkandPhysicallayers.
This layer is essential for delivering frames within the same network segment because it governs how devices access the medium (e.g., Ethernet), how frames are formatted and transmitted, and how hardware addressing works.ARP (Address Resolution Protocol)is especially important here: it resolvesIP addresses to MAC addressesso that an IP packet can be encapsulated into a link-layer frame and delivered to the correct local host or next-hop gateway. Technologies like PPP/SLIP support point-to-point links, while Frame Relay/ATM represent WAN/link technologies, all of which still sit under IP and provide the mechanisms for moving data across the immediate network path.
TheInternet layerhandles IP routing between networks, theTransport layerprovides end-to-end host communications (TCP/UDP), and theApplication layerprovides user protocols. Therefore, the correct layer isNetwork access layer (A).
NEW QUESTION # 31
Bob, a forensic investigator, was instructed to review a Windows machine and identify any anonymous activities performed using it. In this process, Bob used the command "netstat -ano" to view all the active connections in the system and determined that the connections established by the Tor browser were closed.
Which of the following states of the connections established by Tor indicates that the Tor browser is closed?
Answer: A
Explanation:
In Windows network forensics,netstat -anois commonly used to correlateTCP connection stateswithprocess identifiers (PIDs)to understand which application created or used a connection. When Tor Browser is actively communicating, outbound circuits typically appear asESTABLISHEDconnections to Tor relays (entry/guard nodes) or local loopback endpoints used by Tor components. After the browser is closed and the application tears down connections, Windows TCP/IP behavior often leaves recently closed sockets inTIME_WAIT.
TIME_WAITis a normal TCP state that appears after a connection has been actively closed. It exists to ensure delayed packets from the old session are not misinterpreted as belonging to a new session and to allow proper retransmission of the final ACK if needed. From an investigative standpoint, seeing Tor-related endpoints transition from ESTABLISHED toTIME_WAITstrongly indicates the sessions were terminated and the application is no longer maintaining live network traffic.
By contrast,CLOSE_WAITusually means the remote side has closed but the local application has not fully closed its socket yet,LISTENINGindicates a service waiting for inbound connections, andESTABLISHEDmeans the session is still active. Therefore,TIME_WAIT (B)best indicates Tor Browser connections have been closed.
NEW QUESTION # 32
James, a forensic specialist, was appointed to investigate an incident in an organization. As part of the investigation, James is attempting to identify whether any external storage devices are connected to the internal systems. For this purpose, he employed a utility to capture the list of all devices connected to the local machine and removed suspicious devices.
Identify the tool employed by James in the above scenario.
Answer: D
Explanation:
The requirement is tolist devices connected to a local Windows machine, specifically to identifyexternal storage devicesthat may be attached and potentially used for data theft or malware introduction. In Windows forensic practice, investigators often start by enumerating currently mounted volumes and recently connected removable media so they can correlate device presence with suspicious activity timelines and user actions.
DriveLetterViewis a utility designed to display the complete mapping ofdrive letters to storage devices
/volumes, includingremovable drives(USB flash drives, external HDDs), optical media, network-mapped drives, and local partitions. It helps quickly identify what storage devices are present and accessible on the system at the time of inspection, which fits the scenario where James captures a list of connected devices and removes suspicious ones.
The other tools do not match this purpose.ESEDatabaseViewis used to inspect Extensible Storage Engine databases, not enumerate attached storage.ProcDumpis used for creating process memory dumps for debugging/forensic analysis of processes, not for listing connected drives.PromiscDetectrelates to detecting network interfaces in promiscuous mode (packet sniffing), not external storage enumeration. Therefore, the correct tool for identifying connected storage devices isDriveLetterView (C).
NEW QUESTION # 33
Which of the following layers of the TCP/IP model serves as the backbone for data flow between two devices in a network and enables peer entities on the source and destination devices to communicate with each other?
Answer: B
Explanation:
In the TCP/IP model, theTransport layeris responsible forend-to-end communication between peer entitieson the source and destination systems. "Peer entities" here refers to the corresponding transport components (and the applications that use them) on two different hosts communicating across a network. This layer forms the practical "backbone" of host-to-host data flow because it provides the mechanisms that allow data to be deliveredfrom one endpoint process to another endpoint processreliably or efficiently, depending on the protocol used.
The Transport layer includes protocols such asTCPandUDP. TCP supports connection-oriented communication with sequencing, acknowledgments, retransmissions, and flow control-features that are fundamental when reconstructing sessions during network forensic investigations (e.g., rebuilding a file transfer or a web session). UDP provides connectionless delivery used by many services where speed is preferred over guaranteed delivery, which is also significant in investigations of DNS, streaming, or certain malware communications.
By contrast, theInternet layerfocuses on logical addressing and routing (IP), theNetwork access layerhandles local delivery on the physical/link network, and theApplication layerprovides user-facing protocols.
Therefore, the layer enabling peer communication between endpoints is theTransport layer (C).
NEW QUESTION # 34
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