GIAC GNFA exam dumps - GIAC Network Forensic Analyst (GNFA)

  • Exam Code: GNFA
  • Exam Name: GIAC Network Forensic Analyst (GNFA)
  • Updated: Oct 01, 2026     Q & A: 97 Questions and Answers

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

GIAC Network Forensic Analyst (GNFA) Sample Questions:

Question #1

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

  • A. Kali Linux
  • B. IDA Pro
  • C. Wireshark
  • D. Nessus
Reveal Solution  Discussion  0

Correct Answer: B,C  🗳️

Question #2

What is a key advantage of using a proxy-based firewall compared to a packet-filtering firewall?
Response:

  • A. Packet-filtering firewalls are more secure
  • B. Packet-filtering firewalls work at the application layer
  • C. Proxy-based firewalls inspect entire application-layer data
  • D. Proxy-based firewalls cannot block specific content types
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #3

Which of the following are benefits of a software-defined network (SDN)?
(Select two.)
Response:

  • A. Elimination of the need for firewalls
  • B. Greater flexibility and automation
  • C. Increased reliance on physical network devices
  • D. Centralized control of network traffic
Reveal Solution  Discussion  0

Correct Answer: B,D  🗳️

Question #4

Which of the following hashing algorithms belong to the SHA-2 family?
(Select two.)
Response:

  • A. SHA-256
  • B. SHA-1
  • C. MD5
  • D. SHA-512
Reveal Solution  Discussion  0

Correct Answer: A,D  🗳️

Question #5

Which benefits do security proxies provide in enterprise environments?
(Select two.)
Response:

  • A. Content filtering and malware detection
  • B. Reducing network latency
  • C. Logging and monitoring network traffic
  • D. Preventing all phishing attacks
Reveal Solution  Discussion  0

Correct Answer: A,C  🗳️

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