GIAC GNFA Q&A - in .pdf

  • GNFA pdf
  • Exam Code: GNFA
  • Exam Name: GIAC Network Forensic Analyst (GNFA)
  • Updated: Sep 20, 2026
  • Q & A: 97 Questions and Answers
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  • Updated: Sep 20, 2026
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GIAC GNFA Q&A - Testing Engine

  • GNFA Testing Engine
  • Exam Code: GNFA
  • Exam Name: GIAC Network Forensic Analyst (GNFA)
  • Updated: Sep 20, 2026
  • Q & A: 97 Questions and Answers
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GNFA Practice Dumps

GIAC GNFA Exam Syllabus Topics:

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

                                                  GIAC Network Forensic Analyst (GNFA) Sample Questions:

                                                  Question #1

                                                  Which of the following best describes an SIEM (Security Information and Event Management) system?
                                                  Response:

                                                  • A. A firewall rule enforcement mechanism
                                                  • B. A system that collects, normalizes, and analyzes security logs
                                                  • C. A device that encrypts all logs for security purposes
                                                  • D. A tool that blocks malicious network traffic
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: B  🗳️

                                                  Question #2

                                                  What are the benefits of using NetFlow for threat detection?
                                                  (Select two.)
                                                  Response:

                                                  • A. Provides detailed packet-level data
                                                  • B. Identifies large-scale data exfiltration
                                                  • C. Captures real-time keystroke logging
                                                  • D. Helps detect command-and-control (C2) communications
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: B,D  🗳️

                                                  Question #3

                                                  Which of the following protocols operate at the transport layer of the OSI model?
                                                  (Select two.)
                                                  Response:

                                                  • A. TCP
                                                  • B. ICMP
                                                  • C. UDP
                                                  • D. HTTP
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: A,C  🗳️

                                                  Question #4

                                                  Which of the following can be used to detect rogue access points in a wireless network?
                                                  Response:

                                                  • A. Wireless Intrusion Detection System (WIDS)
                                                  • B. Wireshark
                                                  • C. Syslog
                                                  • D. NetFlow
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: A  🗳️

                                                  Question #5

                                                  What methods are used to identify the structure of an unknown network protocol?
                                                  (Select two.)
                                                  Response:

                                                  • A. Static code analysis
                                                  • B. Watching video tutorials
                                                  • C. Packet inspection
                                                  • D. Reverse engineering binaries
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: C,D  🗳️

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