GIAC GNFA Questions To Make Sure Results [2026]

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GIAC GNFA Exam Syllabus Topics:

SectionObjectives
Network Architecture and Design- Network topologies, transmission technologies, and collection points
- Design considerations for forensics and evidence collection
- Segmentation, filtering, and security architecture principles
Security Event and Incident Logging- Deployment, aggregation, and retention strategies
- Log formats, standards, and protocol details
- Correlating logs to reconstruct events and activity
Network Protocol Reverse Engineering- Identifying malicious or non-standard communications
- Tools and methodologies for analyzing unknown or proprietary protocols
- Extracting structure, behavior, and data from traffic
Network Analysis Tools and Usage- Practical application in investigation and analysis
- Traffic capture and analysis tools (tcpdump, Wireshark, etc.)
- Command-line and GUI-based forensic utilities
Wireless Network Analysis- Threats, attacks, and forensic investigation methods
- Capture, analysis, and interpretation of wireless traffic
- Wireless protocols, operation, and security risks
Open-Source Network Security Proxies- Benefits, limitations, and security weaknesses
- Log formats, data flow, and forensic value
- Architecture, deployment, and operational characteristics
Common Network Protocols- Security risks, vulnerabilities, and mitigation controls
- Protocol behavior, characteristics, and normal operation
- TCP, UDP, IP, HTTP, DNS, SMTP, FTP, and other core protocols
Encryption and Encoding Techniques- Encryption algorithms, usage, and implementation
- Common encoding methods and data obfuscation
- Attacks against encryption and encoding controls
NetFlow Analysis and Attack Visualization- Visualization and analysis tools and techniques
- NetFlow, IPFIX, and flow data formats
- Using flow data to identify anomalies, attacks, and lateral movement

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GIAC Network Forensic Analyst (GNFA) Sample Questions (Q69-Q74):

NEW QUESTION # 69
An organization suspects that an attacker is using a tunneling technique to evade detection. The analyst checks NetFlow records and sees a high number of outbound DNS queries with unusually large payloads. What type of attack is likely occurring?
Response:

Answer: C


NEW QUESTION # 70
Which protocol is used to translate IP addresses to MAC addresses on a local network?
Response:

Answer: B


NEW QUESTION # 71
Which of the following best describes a Zero Trust network architecture?
Response:

Answer: B


NEW QUESTION # 72
Which tools are useful for network protocol reverse engineering?
(Select two.)
Response:

Answer: A,B


NEW QUESTION # 73
What is the primary purpose of ICMP (Internet Control Message Protocol)?
Response:

Answer: A


NEW QUESTION # 74
......

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