ACFE CFE - Investigation (Certified Fraud Examiner - Investigation) Practice Test 53

Question 520

A system is changing files while a logical copy runs and hashes do not match a later snapshot. Which response most directly enables the examiner to document expected changes in live acquisition?

  1. Treat matching digests as a content-integrity indicator, not authorship proof
  2. Explain the acquisition window and volatile-state limitation
  3. Compute the digest on receipt and after controlled copying
  4. Compute and record strong cryptographic digests at acquisition and transfer
  5. Use a suitable modern cryptographic hash and access controls

Explanation

Correct Answer

B:

Live data can mutate between reads. A mismatch requires investigation, not automatic evidence-tampering allegations.

Incorrect Answers

A:

Hash matches can show the same bytes under a strong algorithm; that principle applies when the team needs to recognize the limits of hash equality. They do not establish who authored or possessed the data; it is not a substitute for a step that would document expected changes in live acquisition.

C:

Integrity checks detect accidental or unauthorized modification; it describes an action suited to verify a downloaded cloud export stayed unchanged. The acquisition log should capture source and transfer conditions; the immediate evidentiary task here is to document expected changes in live acquisition.

D:

Matching hashes support byte-for-byte integrity for the hashed content; its purpose in an investigation is to confirm a forensic copy matches the source. They do not independently prove chain of custody or legal access; the record instead calls for an action that would document expected changes in live acquisition.

E:

Simple checksums detect some accidental errors but lack cryptographic resistance; it supports the separate objective to avoid using an outdated weak checksum as the sole protection. Integrity assurance also requires secure custody; this case asks for a means to document expected changes in live acquisition instead.

Question 521

A security officer gives an unsealed company laptop to the forensic team after a night shift. Which next step best helps the team to record transfer of a seized laptop?

  1. Log possession, device identifiers, condition, and timestamps
  2. Apply controlled storage, audit trails, and need-to-know access
  3. Preserve a read-only master and use verified working copies
  4. Document source clocks and normalize event times cautiously

Explanation

Correct Answer

A:

Custody documentation tracks the item through handling. Gaps do not prove alteration but weaken confidence in its provenance.

Incorrect Answers

B:

Evidence security protects integrity and confidentiality; it protects the separate goal to secure digital exhibits with restricted access. Analysts still need authenticated, reproducible working access; it is not a substitute for a step that would record transfer of a seized laptop.

C:

Separate analysis copies maintain repeatability; this concerns the distinct task of deciding how to protect original evidence from analyst modifications. Edits should not overwrite source bytes used to establish the initial findings; it is not a substitute for a step that would record transfer of a seized laptop.

D:

A multi-system timeline depends on clock accuracy; this responds to a different operational need to track time synchronization during log collection. Compare a known reference time and record the suspected offset for each device before combining logs; the investigative step being tested here is how to record transfer of a seized laptop.

Question 522

Two specialists want to annotate the only forensic image directly. What action should the investigation team take to protect original evidence from analyst modifications?

  1. Correlate process identity, change logs, and authorization records
  2. Log possession, device identifiers, condition, and timestamps
  3. Apply controlled storage, audit trails, and need-to-know access
  4. Preserve a read-only master and use verified working copies
  5. Establish source, transfer details, and original metadata
  6. Document source clocks and normalize event times cautiously

Explanation

Correct Answer

D:

Separate analysis copies maintain repeatability. Edits should not overwrite source bytes used to establish the initial findings.

Incorrect Answers

A:

A system service may act automatically or under user control; it can be useful for efforts to interpret a privileged service action. Attribution demands more than the name of a privileged process; the investigative step being tested here is how to protect original evidence from analyst modifications.

B:

Custody documentation tracks the item through handling; it can be useful for efforts to record transfer of a seized laptop. Gaps do not prove alteration but weaken confidence in its provenance; the investigative step being tested here is how to protect original evidence from analyst modifications.

C:

Evidence security protects integrity and confidentiality; this concerns the distinct task of deciding how to secure digital exhibits with restricted access. Analysts still need authenticated, reproducible working access; it does not settle how to protect original evidence from analyst modifications in this situation.

E:

A filename is not a provenance record; that principle applies when the team needs to verify a retrieved evidence file's origin. Preserve the original received archive and document who supplied it, when, and through what channel; the current question is about how to protect original evidence from analyst modifications.

F:

A multi-system timeline depends on clock accuracy; it protects the separate goal to track time synchronization during log collection. Compare a known reference time and record the suspected offset for each device before combining logs; it does not settle how to protect original evidence from analyst modifications in this situation.

Question 523

A workstation clock differs by six minutes from the domain controller. Which investigative method is best suited to track time synchronization during log collection?

  1. Preserve a read-only master and use verified working copies
  2. Log possession, device identifiers, condition, and timestamps
  3. Establish source, transfer details, and original metadata
  4. Document source clocks and normalize event times cautiously

Explanation

Correct Answer

D:

A multi-system timeline depends on clock accuracy. Unrecorded drift may falsely change event order. Compare a known reference time and record the suspected offset for each device before combining logs.

Incorrect Answers

A:

Separate analysis copies maintain repeatability; that principle applies when the team needs to protect original evidence from analyst modifications. Edits should not overwrite source bytes used to establish the initial findings; that would leave unresolved the present need to track time synchronization during log collection.

B:

Custody documentation tracks the item through handling; this addresses a different question: how to record transfer of a seized laptop. Gaps do not prove alteration but weaken confidence in its provenance; this case asks for a means to track time synchronization during log collection instead.

C:

A filename is not a provenance record; this is primarily relevant when the objective is to verify a retrieved evidence file's origin. Preserve the original received archive and document who supplied it, when, and through what channel; it does not address the specific requirement to track time synchronization during log collection.

Question 524

A team leaves extracted mailbox data in an unrestricted shared folder. What should the examiner select to secure digital exhibits with restricted access?

  1. Establish source, transfer details, and original metadata
  2. Apply controlled storage, audit trails, and need-to-know access
  3. Document source clocks and normalize event times cautiously
  4. Preserve a read-only master and use verified working copies
  5. Log possession, device identifiers, condition, and timestamps

Explanation

Correct Answer

B:

Evidence security protects integrity and confidentiality. Analysts still need authenticated, reproducible working access.

Incorrect Answers

A:

A filename is not a provenance record; it can be useful for efforts to verify a retrieved evidence file's origin. Preserve the original received archive and document who supplied it, when, and through what channel; the required investigative decision is to secure digital exhibits with restricted access.

C:

A multi-system timeline depends on clock accuracy; this concerns the distinct task of deciding how to track time synchronization during log collection. Compare a known reference time and record the suspected offset for each device before combining logs; that would leave unresolved the present need to secure digital exhibits with restricted access.

D:

Separate analysis copies maintain repeatability; this is primarily relevant when the objective is to protect original evidence from analyst modifications. Edits should not overwrite source bytes used to establish the initial findings; it does not address the specific requirement to secure digital exhibits with restricted access.

E:

Custody documentation tracks the item through handling; it supports the separate objective to record transfer of a seized laptop. Gaps do not prove alteration but weaken confidence in its provenance; it does not address the specific requirement to secure digital exhibits with restricted access.

Question 525

An investigator receives a zip archive named evidence_final with no sender information. What should be done to verify a retrieved evidence file's origin?

  1. Record source clocks and normalize event times cautiously
  2. Preserve a read-only master and use verified working copies
  3. Log possession, device identifiers, condition, and timestamps
  4. Establish source, transfer details, and original metadata

Explanation

Correct Answer

D:

A filename is not a provenance record. Authentication requires a traceable acquisition history. Preserve the original received archive and document who supplied it, when, and through what channel.

Incorrect Answers

A:

A multi-system timeline depends on clock accuracy; that principle applies when the team needs to track time synchronization during log collection. Compare a known reference time and record the suspected offset for each device before combining logs; that would leave unresolved the present need to verify a retrieved evidence file's origin.

B:

Separate analysis copies maintain repeatability; it can be useful for efforts to protect original evidence from analyst modifications. Edits should not overwrite source bytes used to establish the initial findings; that would leave unresolved the present need to verify a retrieved evidence file's origin.

C:

Custody documentation tracks the item through handling; that is the consideration when a team tries to record transfer of a seized laptop. Gaps do not prove alteration but weaken confidence in its provenance; that would leave unresolved the present need to verify a retrieved evidence file's origin.

Question 526

An account was used after the employee's normal shift. Which response most directly enables the examiner to investigate a suspicious user logon?

  1. Review authentication events, session context, and device logs
  2. Examine recycle, file-system, backup, and application history
  3. Check authorized endpoint device-connection and file-activity artifacts
  4. Analyze available file-system metadata and application artifacts

Explanation

Correct Answer

A:

A login event may establish account activity but not unique human identity. Remote access and shared credentials require checking.

Incorrect Answers

B:

Absence from a folder does not prove intentional deletion; its purpose in an investigation is to assess whether a file was deleted. Available artifacts may reveal moves, retention, or actual removal; the current question is about how to investigate a suspicious user logon.

C:

Connection records may show device presence but not which files were taken; this distinction matters when investigators must identify a removable-storage connection. File-access evidence or other logs may be needed; it would not by itself meet the stated need to investigate a suspicious user logon.

D:

Access indicators can help sequence activity, but timestamps and artifacts vary; its purpose in an investigation is to reconstruct access to a local document. Opening does not necessarily mean editing; it does not address the specific requirement to investigate a suspicious user logon.

Question 527

A spreadsheet was opened near the suspected alteration time. Which action addresses the primary investigative need to reconstruct access to a local document?

  1. Review authentication events, session context, and device logs
  2. Check authorized endpoint device-connection and file-activity artifacts
  3. Correlate process identity, change logs, and authorization records
  4. Analyze available file-system metadata and application artifacts

Explanation

Correct Answer

D:

Access indicators can help sequence activity, but timestamps and artifacts vary. Opening does not necessarily mean editing.

Incorrect Answers

A:

A login event may establish account activity but not unique human identity; it describes an action suited to investigate a suspicious user logon. Remote access and shared credentials require checking; this case asks for a means to reconstruct access to a local document instead.

B:

Connection records may show device presence but not which files were taken; that is why it can help to identify a removable-storage connection. File-access evidence or other logs may be needed; the immediate evidentiary task here is to reconstruct access to a local document.

C:

A system service may act automatically or under user control; this addresses a different question: how to interpret a privileged service action. Attribution demands more than the name of a privileged process; the required investigative decision is to reconstruct access to a local document.

Question 528

The company suspects data copied to a USB device before resignation. Which option best supports the objective to identify a removable-storage connection?

  1. Correlate process identity, change logs, and authorization records
  2. Analyze available file-system metadata and application artifacts
  3. Review authentication events, session context, and device logs
  4. Check authorized endpoint device-connection and file-activity artifacts
  5. Examine recycle, file-system, backup, and application history

Explanation

Correct Answer

D:

Connection records may show device presence but not which files were taken. File-access evidence or other logs may be needed.

Incorrect Answers

A:

A system service may act automatically or under user control; it supports the separate objective to interpret a privileged service action. Attribution demands more than the name of a privileged process; it does not address the specific requirement to identify a removable-storage connection.

B:

Access indicators can help sequence activity, but timestamps and artifacts vary; this distinction matters when investigators must reconstruct access to a local document. Opening does not necessarily mean editing; the priority under these facts is to identify a removable-storage connection.

C:

A login event may establish account activity but not unique human identity; its purpose in an investigation is to investigate a suspicious user logon. Remote access and shared credentials require checking; this case asks for a means to identify a removable-storage connection instead.

E:

Absence from a folder does not prove intentional deletion; this distinction matters when investigators must assess whether a file was deleted. Available artifacts may reveal moves, retention, or actual removal; the priority under these facts is to identify a removable-storage connection.

Question 529

A relevant report is absent from a user's home folder after an HR notice. Which technique best fits the need to assess whether a file was deleted?

  1. Examine recycle, file-system, backup, and application history
  2. Review authentication events, session context, and device logs
  3. Analyze available file-system metadata and application artifacts
  4. Correlate process identity, change logs, and authorization records

Explanation

Correct Answer

A:

Absence from a folder does not prove intentional deletion. Available artifacts may reveal moves, retention, or actual removal.

Incorrect Answers

B:

A login event may establish account activity but not unique human identity; this distinction matters when investigators must investigate a suspicious user logon. Remote access and shared credentials require checking; this case asks for a means to assess whether a file was deleted instead.

C:

Access indicators can help sequence activity, but timestamps and artifacts vary; that is why it can help to reconstruct access to a local document. Opening does not necessarily mean editing; it is not a substitute for a step that would assess whether a file was deleted.

D:

A system service may act automatically or under user control; that is the consideration when a team tries to interpret a privileged service action. Attribution demands more than the name of a privileged process; the priority under these facts is to assess whether a file was deleted.

Question 530

An administrative process altered audit settings during a disputed period. What is the strongest investigative approach to interpret a privileged service action?

  1. Correlate process identity, change logs, and authorization records
  2. Check authorized endpoint device-connection and file-activity artifacts
  3. Review authentication events, session context, and device logs
  4. Examine recycle, file-system, backup, and application history

Explanation

Correct Answer

A:

A system service may act automatically or under user control. Attribution demands more than the name of a privileged process.

Incorrect Answers

B:

Connection records may show device presence but not which files were taken; it belongs to a different stage of work: trying to identify a removable-storage connection. File-access evidence or other logs may be needed; it is not a substitute for a step that would interpret a privileged service action.

C:

A login event may establish account activity but not unique human identity; that is why it can help to investigate a suspicious user logon. Remote access and shared credentials require checking; it would not by itself meet the stated need to interpret a privileged service action.

D:

Absence from a folder does not prove intentional deletion; that is why it can help to assess whether a file was deleted. Available artifacts may reveal moves, retention, or actual removal; the priority under these facts is to interpret a privileged service action.

Certified Fraud Examiner - Investigation (CFE - Investigation) Practice Tests