The answer is direct and circumstantial evidence, as these are the two primary types of evidence recognized under the rules of evidence in computer forensics. Direct evidence directly proves a fact, such as a surveillance video showing an unauthorized login, while circumstantial evidence requires inference, like log files showing a user’s credentials were used at the time of an intrusion. On the Computer Hacking Forensic Investigator CHFI exam, this distinction tests your understanding of foundational legal concepts that govern how digital evidence is classified and presented in court. A common trap is confusing hearsay or best evidence rules—which are procedural rules, not evidence types—with actual categories of evidence. To remember this, think of the mnemonic “DC” for Direct and Circumstantial, and that hearsay and best evidence are “rules, not types.”
CHFI Computer Forensics Fundamentals and Process Practice Question
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 TWO of the following are considered types of evidence under the rules of evidence?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Direct evidence
Direct and circumstantial evidence are two main categories. Hearsay and best evidence are rules, not types.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Best evidence rule
Why it's wrong here
Best evidence rule is a legal principle, not a type of evidence.
✓
Direct evidence
Why this is correct
Direct evidence directly proves a fact without inference.
Related concept
Static NAT maps one inside address to one outside address.
✓
Circumstantial evidence
Why this is correct
Circumstantial evidence requires inference to connect to a fact.
Related concept
Static NAT maps one inside address to one outside address.
✗
Hearsay evidence
Why it's wrong here
Hearsay is a rule about out-of-court statements, not a type of evidence.
✗
Exculpatory evidence
Why it's wrong here
Exculpatory evidence is evidence favorable to the defendant, but it is a category based on effect, not a type under the rules.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CHFI question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related CHFI NAT questions on configuration and troubleshooting.
Computer Forensics Fundamentals and Process — This question tests Computer Forensics Fundamentals and Process — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Direct evidence — Direct and circumstantial evidence are two main categories. Hearsay and best evidence are rules, not types.
What should I do if I get this CHFI question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related CHFI NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which THREE of the following are considered types of evidence under the rules of evidence? (Choose three.)
hard
A.Corroborating evidence
B.Best evidence
✓ C.Circumstantial evidence
✓ D.Direct evidence
✓ E.Hearsay evidence
Why C: Circumstantial evidence is a recognized type of evidence under the rules of evidence because it relies on an inference to connect a fact to a conclusion, rather than directly proving the fact. In digital forensics, circumstantial evidence might include log entries showing a user logged in at the time of an incident, which indirectly suggests involvement. It is admissible as long as the chain of inferences is reasonable and supported by other facts.
Variation 2. Which TWO of the following are considered forms of evidence under the rules of evidence? (Select two.)
medium
A.Illegally obtained evidence
B.Hearsay evidence
✓ C.Circumstantial evidence
D.Opinion evidence
✓ E.Direct evidence
Why C: Circumstantial evidence is a recognized form of evidence under the rules of evidence because it allows a fact-finder to infer a fact from other established facts, even without direct witness testimony. In digital forensics, this is critical when reconstructing user activity from log files, file metadata, or network traffic patterns that indirectly prove an action occurred.
Last reviewed: Jun 21, 2026
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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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