ECCouncil 312-49v11 (Computer Hacking Forensic Investigator) Practice Test 46

Question 450

A smart-building sensor publishes measurements to a broker on named topics, and investigators need device-message context. Which protocol should be examined?

  1. Android app SQLite database
  2. IoT MQTT traffic
  3. SIM card ICCID
  4. Android ADB acquisition

Explanation

Correct Answer

B:

MQTT uses a publish/subscribe broker model with topics and client sessions, often over TCP and optionally TLS. Topic metadata can explain sensor communications when captured.

Incorrect Answers

A:

A case involving application messages in a structured local database might use this approach: SQLite databases and associated WAL/journal files can contain application records and pending changes; the required result here is publish-subscribe messages from connected devices. Database format and app encryption may limit recoverability; it cannot replace proof about publish-subscribe messages from connected devices.

C:

Although the case asks about publish-subscribe messages from connected devices, ICCID identifies the SIM or integrated circuit card, whereas IMEI normally identifies cellular equipment; the action instead concerns identity of the SIM card itself. Carrier and provisioning changes can complicate subscriber attribution; it does not establish publish-subscribe messages from connected devices.

D:

For an analysis centered on authorized Android device inspection through debugging interface, Android Debug Bridge can query device state and access permitted files, depending on authorization and privileges; the present need is publish-subscribe messages from connected devices. It does not automatically bypass encryption or app sandbox controls; a different finding about publish-subscribe messages from connected devices is still needed.

Question 451

A lab needs a GUI to preview evidence storage and create verified forensic images, including E01 output. Which utility is a common fit?

  1. Hashdeep
  2. ewfacquire
  3. FTK Imager
  4. ddrescue

Explanation

Correct Answer

C:

FTK Imager supports evidence previews, imaging, hashing and image verification in supported workflows. Acquisition logs and source write protection remain the examiner's responsibility.

Incorrect Answers

A:

Even though the scenario needs GUI-based forensic image creation and verification, hashdeep computes cryptographic hashes across file sets and supports matching or auditing against known values; the action relates to recursive verification of a collection of files. It does not interpret document meaning or reconstruct deleted files; this remains insufficient for GUI-based forensic image creation and verification.

B:

For the separate question of direct acquisition into an EWF container, ewfacquire captures sources into EWF containers with associated acquisition options and metadata; the requested assessment of GUI-based forensic image creation and verification remains open. Integrity verification is a separate step that should be performed and recorded; there is no direct finding about GUI-based forensic image creation and verification.

D:

For a separate investigation of resumable recovery imaging from damaged storage, GNU ddrescue tracks completed and failed regions in a mapfile, enabling staged recovery from damaged media; that is not the determination of GUI-based forensic image creation and verification in the stem. It prioritizes recovering readable sectors and cannot restore physically lost bytes; the evidence still must speak to GUI-based forensic image creation and verification.

Question 452

An examiner on Linux wants a GUI tool optimized for forensic imaging with detailed acquisition metadata. Which tool is appropriate?

  1. EWF verification ewfverify
  2. Guymager
  3. ddrescue
  4. dc3dd
  5. Hardware write blocker

Explanation

Correct Answer

B:

Guymager supports disk acquisition with hashing and imaging formats such as raw and EWF on supported Linux systems. Appropriate device access and write-protected workflows still matter.

Incorrect Answers

A:

Instead of a method addressing Linux graphical forensic disk acquisition, ewfverify verifies an EWF image against its available checksums and integrity data; this one concerns integrity verification of an EWF acquisition. It cannot independently show that the source was lawfully seized; it cannot independently determine Linux graphical forensic disk acquisition.

C:

A case involving resumable recovery imaging from damaged storage might use this approach: GNU ddrescue tracks completed and failed regions in a mapfile, enabling staged recovery from damaged media; the required result here is Linux graphical forensic disk acquisition. It prioritizes recovering readable sectors and cannot restore physically lost bytes; it cannot replace proof about Linux graphical forensic disk acquisition.

D:

The required finding is about Linux graphical forensic disk acquisition; dc3dd extends traditional copying with forensic-oriented features including hashing and logging; this addresses the separate concern of command-line raw acquisition with forensic logging. It does not automatically prevent writes to the source device; it does not by itself answer Linux graphical forensic disk acquisition.

E:

Although the case asks about Linux graphical forensic disk acquisition, a validated hardware write blocker mediates access to evidence storage and blocks writes in its supported modes; the action instead concerns physical mediation of write commands to a source drive. The team must test correct operation with the actual interface; it does not establish Linux graphical forensic disk acquisition.

Question 453

A Linux response script must make a raw image with hashing and progress reporting in a command-line workflow. Which enhanced dd-family utility fits?

  1. dc3dd
  2. Guymager
  3. ewfacquire
  4. ddrescue

Explanation

Correct Answer

A:

dc3dd extends traditional copying with forensic-oriented features including hashing and logging. It does not automatically prevent writes to the source device.

Incorrect Answers

B:

In an inquiry concerning Linux graphical forensic disk acquisition, guymager supports disk acquisition with hashing and imaging formats such as raw and EWF on supported Linux systems; the scope does not extend to command-line raw acquisition with forensic logging. Appropriate device access and write-protected workflows still matter; that issue cannot settle command-line raw acquisition with forensic logging.

C:

Even though the scenario needs command-line raw acquisition with forensic logging, ewfacquire captures sources into EWF containers with associated acquisition options and metadata; the action relates to direct acquisition into an EWF container. Integrity verification is a separate step that should be performed and recorded; this remains insufficient for command-line raw acquisition with forensic logging.

D:

For the separate question of resumable recovery imaging from damaged storage, GNU ddrescue tracks completed and failed regions in a mapfile, enabling staged recovery from damaged media; the requested assessment of command-line raw acquisition with forensic logging remains open. It prioritizes recovering readable sectors and cannot restore physically lost bytes; there is no direct finding about command-line raw acquisition with forensic logging.

Question 454

The team wants to acquire a device directly into an Expert Witness Format image using libewf utilities. Which command fits?

  1. ewfacquire
  2. EWF verification ewfverify
  3. dc3dd
  4. ddrescue
  5. AFF4 imaging workflow

Explanation

Correct Answer

A:

ewfacquire captures sources into EWF containers with associated acquisition options and metadata. Integrity verification is a separate step that should be performed and recorded.

Incorrect Answers

B:

The stem asks about direct acquisition into an EWF container; ewfverify verifies an EWF image against its available checksums and integrity data; the described operation is used for integrity verification of an EWF acquisition. It cannot independently show that the source was lawfully seized; a determination about direct acquisition into an EWF container requires other support.

C:

Instead of a method addressing direct acquisition into an EWF container, dc3dd extends traditional copying with forensic-oriented features including hashing and logging; this one concerns command-line raw acquisition with forensic logging. It does not automatically prevent writes to the source device; it cannot independently determine direct acquisition into an EWF container.

D:

In work concerning resumable recovery imaging from damaged storage, GNU ddrescue tracks completed and failed regions in a mapfile, enabling staged recovery from damaged media; the operation would not resolve direct acquisition into an EWF container. It prioritizes recovering readable sectors and cannot restore physically lost bytes; the distinction leaves direct acquisition into an EWF container unsettled.

E:

A case involving structured forensic evidence packaging with streams might use this approach: AFF4 is a structured forensic evidence format intended to store data streams and associated metadata; the required result here is direct acquisition into an EWF container. Tool support should be established before adopting it in a workflow; it cannot replace proof about direct acquisition into an EWF container.

Question 455

A previously created E01 image arrived at another lab and must be checked against its stored integrity information. Which libewf tool addresses this?

  1. FTK Imager
  2. Software write blocker
  3. Hardware write blocker
  4. EWF verification ewfverify

Explanation

Correct Answer

D:

ewfverify verifies an EWF image against its available checksums and integrity data. It cannot independently show that the source was lawfully seized.

Incorrect Answers

A:

For an analysis centered on GUI-based forensic image creation and verification, FTK Imager supports evidence previews, imaging, hashing and image verification in supported workflows; the present need is integrity verification of an EWF acquisition. Acquisition logs and source write protection remain the examiner's responsibility; a different finding about integrity verification of an EWF acquisition is still needed.

B:

When the investigative task is OS-level read-only access to evidence storage, software write blocking enforces read-only device access through OS or driver controls, but its coverage depends on configuration and bypass paths; that differs from the question about integrity verification of an EWF acquisition. It requires validation before relying on it; that leaves integrity verification of an EWF acquisition unresolved.

C:

The current inquiry asks about integrity verification of an EWF acquisition; a validated hardware write blocker mediates access to evidence storage and blocks writes in its supported modes; this mechanism chiefly addresses physical mediation of write commands to a source drive. The team must test correct operation with the actual interface; it cannot prove integrity verification of an EWF acquisition on its own.

Question 456

A laboratory needs a forensic container able to organize images and related streams with metadata rather than a plain raw file. Which format family may be selected?

  1. AFF4 imaging workflow
  2. ewfacquire
  3. dc3dd
  4. EWF verification ewfverify

Explanation

Correct Answer

A:

AFF4 is a structured forensic evidence format intended to store data streams and associated metadata. Tool support should be established before adopting it in a workflow.

Incorrect Answers

B:

With structured forensic evidence packaging with streams as the investigative issue, ewfacquire captures sources into EWF containers with associated acquisition options and metadata; the result would concern direct acquisition into an EWF container. Integrity verification is a separate step that should be performed and recorded; this would not resolve structured forensic evidence packaging with streams.

C:

For questions about command-line raw acquisition with forensic logging, dc3dd extends traditional copying with forensic-oriented features including hashing and logging; that differs from structured forensic evidence packaging with streams. It does not automatically prevent writes to the source device; it provides no direct answer to structured forensic evidence packaging with streams.

D:

The stem asks about structured forensic evidence packaging with streams; ewfverify verifies an EWF image against its available checksums and integrity data; the described operation is used for integrity verification of an EWF acquisition. It cannot independently show that the source was lawfully seized; a determination about structured forensic evidence packaging with streams requires other support.

Question 457

An examiner must connect a suspect SATA drive to a workstation while preventing host-originated modification commands. Which device class is appropriate?

  1. ddrescue
  2. Guymager
  3. dc3dd
  4. Hardware write blocker
  5. Hashdeep
  6. Software write blocker

Explanation

Correct Answer

D:

A validated hardware write blocker mediates access to evidence storage and blocks writes in its supported modes. The team must test correct operation with the actual interface.

Incorrect Answers

A:

The required finding is about physical mediation of write commands to a source drive; GNU ddrescue tracks completed and failed regions in a mapfile, enabling staged recovery from damaged media; this addresses the separate concern of resumable recovery imaging from damaged storage. It prioritizes recovering readable sectors and cannot restore physically lost bytes; it does not by itself answer physical mediation of write commands to a source drive.

B:

Although the case asks about physical mediation of write commands to a source drive, guymager supports disk acquisition with hashing and imaging formats such as raw and EWF on supported Linux systems; the action instead concerns Linux graphical forensic disk acquisition. Appropriate device access and write-protected workflows still matter; it does not establish physical mediation of write commands to a source drive.

C:

For an analysis centered on command-line raw acquisition with forensic logging, dc3dd extends traditional copying with forensic-oriented features including hashing and logging; the present need is physical mediation of write commands to a source drive. It does not automatically prevent writes to the source device; a different finding about physical mediation of write commands to a source drive is still needed.

E:

The current inquiry asks about physical mediation of write commands to a source drive; hashdeep computes cryptographic hashes across file sets and supports matching or auditing against known values; this mechanism chiefly addresses recursive verification of a collection of files. It does not interpret document meaning or reconstruct deleted files; it cannot prove physical mediation of write commands to a source drive on its own.

F:

In an inquiry concerning OS-level read-only access to evidence storage, software write blocking enforces read-only device access through OS or driver controls, but its coverage depends on configuration and bypass paths; the scope does not extend to physical mediation of write commands to a source drive. It requires validation before relying on it; that issue cannot settle physical mediation of write commands to a source drive.

Question 458

A forensic workstation has an approved driver that prevents writes through the supported disk access path during examination. Which control is being used?

  1. ewfacquire
  2. Software write blocker
  3. FTK Imager
  4. AFF4 imaging workflow

Explanation

Correct Answer

B:

Software write blocking enforces read-only device access through OS or driver controls, but its coverage depends on configuration and bypass paths. It requires validation before relying on it.

Incorrect Answers

A:

For the separate question of direct acquisition into an EWF container, ewfacquire captures sources into EWF containers with associated acquisition options and metadata; the requested assessment of OS-level read-only access to evidence storage remains open. Integrity verification is a separate step that should be performed and recorded; there is no direct finding about OS-level read-only access to evidence storage.

C:

For a separate investigation of GUI-based forensic image creation and verification, FTK Imager supports evidence previews, imaging, hashing and image verification in supported workflows; that is not the determination of OS-level read-only access to evidence storage in the stem. Acquisition logs and source write protection remain the examiner's responsibility; the evidence still must speak to OS-level read-only access to evidence storage.

D:

With OS-level read-only access to evidence storage as the investigative issue, AFF4 is a structured forensic evidence format intended to store data streams and associated metadata; the result would concern structured forensic evidence packaging with streams. Tool support should be established before adopting it in a workflow; this would not resolve OS-level read-only access to evidence storage.

Question 459

An investigator needs recursive file digests and comparison of many exported files against a manifest. Which utility is suitable?

  1. dc3dd
  2. ddrescue
  3. ewfacquire
  4. Hashdeep
  5. EWF verification ewfverify

Explanation

Correct Answer

D:

hashdeep computes cryptographic hashes across file sets and supports matching or auditing against known values. It does not interpret document meaning or reconstruct deleted files.

Incorrect Answers

A:

In work concerning command-line raw acquisition with forensic logging, dc3dd extends traditional copying with forensic-oriented features including hashing and logging; the operation would not resolve recursive verification of a collection of files. It does not automatically prevent writes to the source device; the distinction leaves recursive verification of a collection of files unsettled.

B:

A case involving resumable recovery imaging from damaged storage might use this approach: GNU ddrescue tracks completed and failed regions in a mapfile, enabling staged recovery from damaged media; the required result here is recursive verification of a collection of files. It prioritizes recovering readable sectors and cannot restore physically lost bytes; it cannot replace proof about recursive verification of a collection of files.

C:

The required finding is about recursive verification of a collection of files; ewfacquire captures sources into EWF containers with associated acquisition options and metadata; this addresses the separate concern of direct acquisition into an EWF container. Integrity verification is a separate step that should be performed and recorded; it does not by itself answer recursive verification of a collection of files.

E:

For an analysis centered on integrity verification of an EWF acquisition, ewfverify verifies an EWF image against its available checksums and integrity data; the present need is recursive verification of a collection of files. It cannot independently show that the source was lawfully seized; a different finding about recursive verification of a collection of files is still needed.

Question 460

A failing drive has unreadable regions and must be imaged with resumable retries and a mapfile. Which Linux utility is well suited?

  1. Software write blocker
  2. ewfacquire
  3. ddrescue
  4. Hardware write blocker

Explanation

Correct Answer

C:

GNU ddrescue tracks completed and failed regions in a mapfile, enabling staged recovery from damaged media. It prioritizes recovering readable sectors and cannot restore physically lost bytes.

Incorrect Answers

A:

In an inquiry concerning OS-level read-only access to evidence storage, software write blocking enforces read-only device access through OS or driver controls, but its coverage depends on configuration and bypass paths; the scope does not extend to resumable recovery imaging from damaged storage. It requires validation before relying on it; that issue cannot settle resumable recovery imaging from damaged storage.

B:

Even though the scenario needs resumable recovery imaging from damaged storage, ewfacquire captures sources into EWF containers with associated acquisition options and metadata; the action relates to direct acquisition into an EWF container. Integrity verification is a separate step that should be performed and recorded; this remains insufficient for resumable recovery imaging from damaged storage.

D:

The objective here is resumable recovery imaging from damaged storage; a validated hardware write blocker mediates access to evidence storage and blocks writes in its supported modes; the option would instead inform physical mediation of write commands to a source drive. The team must test correct operation with the actual interface; it is not direct evidence of resumable recovery imaging from damaged storage.

Computer Hacking Forensic Investigator (312-49v11) Practice Tests