Quick Answer
The answer is admissibility, authenticity, and completeness, as these three rules of evidence are the foundational criteria digital evidence must satisfy to be admissible in court. Authenticity ensures the evidence is exactly what it purports to be, typically verified through cryptographic hash verification like SHA-256 and a documented chain of custody to prove no tampering occurred. Completeness requires that the evidence tells the whole story without omission, while admissibility governs whether the evidence meets legal and procedural standards for court acceptance. On the Computer Hacking Forensic Investigator CHFI exam, this question tests your grasp of core forensic principles, often appearing as a select-three scenario where distractors like “reliability” or “sufficiency” are common traps—remember that the court cares about whether evidence is real, whole, and legally allowed. A useful memory tip is the acronym “AAC” (Admissibility, Authenticity, Completeness) to recall the three pillars that keep digital evidence from being thrown out.
This CHFI practice question tests your understanding of computer forensics fundamentals and process. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE of the following are considered rules of evidence that digital evidence must satisfy to be admissible in court? (Select THREE)
Best evidence
Why wrong: While important, it is not always required; forensic images are often accepted.
Authenticity
Evidence must be proven to be what it claims to be.
Hearsay
Why wrong: Hearsay is a rule against out-of-court statements, not a requirement for admissibility of digital evidence.
Completeness
Evidence should be as complete as possible to avoid misleading.
Admissibility
Evidence must be legally obtained and relevant.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Authenticity
Authenticity (B) is a core rule of evidence because the court must be assured that the digital evidence is exactly what it purports to be and has not been tampered with. This is typically established through cryptographic hash verification (e.g., SHA-256) and a documented chain of custody. Without authenticity, the evidence could be challenged as fabricated or altered, rendering it inadmissible.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Best evidence
Why it's wrong here
While important, it is not always required; forensic images are often accepted.
Authenticity
Why this is correct
Evidence must be proven to be what it claims to be.
Related concept
Read the scenario before looking for a memorised answer.
Hearsay
Why it's wrong here
Hearsay is a rule against out-of-court statements, not a requirement for admissibility of digital evidence.
Completeness
Why this is correct
Evidence should be as complete as possible to avoid misleading.
Related concept
Read the scenario before looking for a memorised answer.
Admissibility
Why this is correct
Evidence must be legally obtained and relevant.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
EC-Council often tests the distinction between the 'best evidence rule' (which is a legal principle, not a rule of evidence that digital evidence must satisfy) and the actual three rules (authenticity, completeness, admissibility), causing candidates to mistakenly select 'Best evidence' as a required rule.
Detailed technical explanation
The three rules of evidence that digital evidence must satisfy are authenticity, completeness, and admissibility (often referred to as the 'three pillars' in CHFI). Authenticity relies on hash verification (e.g., MD5, SHA-1, SHA-256) and a strict chain of custody documented with timestamps and signatures. Completeness ensures the evidence is not cherry-picked; for example, a full disk image (E01 or DD format) must be acquired rather than just relevant files to avoid spoliation claims. Admissibility is the overarching legal standard that the evidence was obtained lawfully (e.g., with a warrant or consent) and is relevant to the case.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CHFI exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Computer Forensics Fundamentals and Process — This question tests Computer Forensics Fundamentals and Process — Read the scenario before looking for a memorised answer..
The correct answer is: Authenticity — Authenticity (B) is a core rule of evidence because the court must be assured that the digital evidence is exactly what it purports to be and has not been tampered with. This is typically established through cryptographic hash verification (e.g., SHA-256) and a documented chain of custody. Without authenticity, the evidence could be challenged as fabricated or altered, rendering it inadmissible.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This CHFI practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CHFI exam.
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