GIAC GNFA exam : GIAC Network Forensic Analyst (GNFA)

GNFA Exam Simulator
  • Exam Code: GNFA
  • Exam Name: GIAC Network Forensic Analyst (GNFA)
  • Updated: Oct 05, 2026
  • Q & A: 97 Questions and Answers

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GIAC GNFA exam simulator

GIAC GNFA Exam Syllabus Topics:

SectionObjectives
Topic 1: Network Protocol Analysis- Application layer protocols
  • 1. DNS query and response forensics
    • 2. HTTP/HTTPS traffic analysis
      - Transport and session behavior
      • 1. TLS/SSL inspection concepts
        • 2. Session reconstruction techniques
          Topic 2: Network Intrusion Detection and Analysis- Malicious traffic identification
          • 1. Command and control detection patterns
            • 2. Lateral movement indicators
              - IDS/IPS interpretation
              • 1. Signature vs anomaly detection
                • 2. Alert triage and validation
                  Topic 3: Network Forensic Investigation- Evidence handling
                  • 1. Data integrity validation
                    • 2. Chain of custody considerations
                      - Incident reconstruction
                      • 1. Timeline creation from PCAP/logs
                        • 2. Attribution and artifact correlation
                          Topic 4: Packet Capture and Traffic Analysis- Packet acquisition techniques
                          • 1. PCAP collection best practices
                            • 2. tcpdump usage and filtering
                              - Traffic inspection tools
                              • 1. Protocol decoding and inspection
                                • 2. Wireshark analysis workflows
                                  Topic 5: Incident Response and Reporting- Reporting and documentation
                                  • 1. Executive-level summarization
                                    • 2. Technical reporting structure
                                      - Response workflow
                                      • 1. Containment and eradication support
                                        • 2. Network-based investigation integration
                                          Topic 6: Network Fundamentals for Forensics- TCP/IP protocol suite understanding
                                          • 1. IP addressing and subnetting
                                            • 2. TCP vs UDP behavior analysis
                                              - Network architecture and traffic flow
                                              • 1. Network segmentation and visibility
                                                • 2. Client-server communication patterns

                                                  GIAC Network Forensic Analyst (GNFA) Sample Questions:

                                                  Question #1

                                                  Which protocol operates at Layer 3 of the OSI model and is responsible for logical addressing?
                                                  Response:

                                                  • A. TCP
                                                  • B. UDP
                                                  • C. IP
                                                  • D. ARP
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: C  🗳️

                                                  Question #2

                                                  What types of security events should organizations prioritize in log analysis?
                                                  (Select two.)
                                                  Response:

                                                  • A. Routine system reboots
                                                  • B. Large data transfers from internal to external networks
                                                  • C. Failed login attempts
                                                  • D. CPU utilization logs
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: B,C  🗳️

                                                  Question #3

                                                  What is the main advantage of a segmented network architecture?
                                                  Response:

                                                  • A. Increased complexity in routing
                                                  • B. Improved security by limiting lateral movement
                                                  • C. Reduced performance due to additional firewalls
                                                  • D. Elimination of network monitoring needs
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: B  🗳️

                                                  Question #4

                                                  Which open-source tool is commonly used as a forward and reverse proxy for security analysis?
                                                  Response:

                                                  • A. Wireshark
                                                  • B. Nessus
                                                  • C. Burp Suite
                                                  • D. Snort
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: C  🗳️

                                                  Question #5

                                                  What is the primary purpose of log normalization in security event logging?
                                                  Response:

                                                  • A. To convert log entries into a consistent format for analysis
                                                  • B. To encrypt all log data before analysis
                                                  • C. To store raw logs in different formats
                                                  • D. To delete unnecessary logs for storage optimization
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: A  🗳️

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