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Updated: Sep 08, 2026
No. of Questions: 97 Questions & Answers with Testing Engine
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GIAC GNFA Exam Overview:
| Certification Vendor: | GIAC (SANS Institute) |
|---|---|
| Exam Name: | GIAC Network Forensic Analyst (GNFA) Certification Exam |
| Exam Number: | GNFA |
| Available Languages: | English |
| Real Exam Qty: | 75–85 questions (approx.) |
| Passing Score: | Approximately 70–73% |
| Related Certifications: | GIAC Certified Intrusion Analyst (GCIA) GIAC Certified Forensic Analyst (GCFA) |
| Exam Duration: | 120-180 |
| Exam Format: | Proctored, Open Book (authorized materials), Multiple Choice |
| Certificate Validity Period: | 4 years |
| Exam Price: | $949–$979 USD |
| Recommended Training: | SANS FOR572: Advanced Network Forensics and Analysis |
| Exam Registration: | SANS Institute Certification Information GIAC Certification Registration |
| Sample Questions: | GIAC GNFA Sample Questions |
| Exam Way: | Online proctored exam (remote delivery via GIAC/SANS platform) |
| Pre Condition: | No mandatory prerequisites. Strongly recommended: networking fundamentals and security analysis experience; SANS FOR572 training is highly recommended. |
| Official Syllabus URL: | https://www.giac.org/certifications/network-forensic-analyst-gnfa/ |
GIAC GNFA Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Network Forensic Investigation | - Evidence handling
|
| Network Protocol Analysis | - Application layer protocols
|
| Packet Capture and Traffic Analysis | - Packet acquisition techniques
|
| Incident Response and Reporting | - Response workflow
|
| Network Intrusion Detection and Analysis | - Malicious traffic identification
|
| Network Fundamentals for Forensics | - TCP/IP protocol suite understanding
|
GIAC Network Forensic Analyst (GNFA) Sample Questions:
Question 1
What methods are used to identify the structure of an unknown network protocol?
(Select two.)
Response:
A. Static code analysis
B. Reverse engineering binaries
C. Packet inspection
D. Watching video tutorials
Question 2
Which type of network topology is most resilient against a single point of failure?
Response:
A. Bus
B. Mesh
C. Ring
D. Star
Question 3
A company wants to prevent employees from accessing malicious websites while browsing the internet. Which type of proxy would best meet this requirement?
Response:
A. Transparent forward proxy
B. Network intrusion detection system
C. Load balancer
D. Reverse proxy
Question 4
Which of the following NetFlow-based anomalies could indicate a Distributed Denial-of-Service (DDoS) attack?
(Select two.)
Response:
A. High number of unique destination IPs from a single source
B. High volume of traffic from a single source
C. Large number of failed login attempts
D. Unusual encrypted payload patterns
Question 5
What is a key advantage of using 802.1X authentication for wireless security?
Response:
A. It prevents rogue access points from appearing
B. It allows access to anyone with a Wi-Fi password
C. It reduces the need for network segmentation
D. It enables encrypted authentication for each user
Solutions:
| Question 1 Answer: B,C | Question 2 Answer: B | Question 3 Answer: A | Question 4 Answer: A,B | Question 5 Answer: D |
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Frequently Asked Questions
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Online Test Engine can supports Windows / Mac / Android / iOS, etc., because it is the software based on WEB browser. You can use it on any electronic device and practice with self-paced.
Online Test Engine supports offline practice, while the precondition is that you should run it with the internet at the first time.
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PDF Version: can be read under the Adobe reader, or many other free readers, including OpenOffice, Foxit Reader and Google Docs.
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Once download and installed on your PC, you can practice GNFA test questions, review your questions & answers using two different options 'practice exam' and 'virtual exam'.
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