GIAC GNFA Q&A - in .pdf

  • GNFA pdf
  • Exam Code: GNFA
  • Exam Name: GIAC Network Forensic Analyst (GNFA)
  • Updated: Oct 15, 2026
  • Q & A: 97 Questions and Answers
  • Convenient, easy to study.
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  • Updated: Oct 15, 2026
  • Q & A: 97 Questions and Answers
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GIAC GNFA Q&A - Testing Engine

  • GNFA Testing Engine
  • Exam Code: GNFA
  • Exam Name: GIAC Network Forensic Analyst (GNFA)
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  • Q & A: 97 Questions and Answers
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GIAC GNFA Exam Syllabus Topics:

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

                                                  GIAC Network Forensic Analyst (GNFA) Sample Questions:

                                                  Question #1

                                                  A security analyst is tasked with identifying unauthorized devices connecting to a company's Wi-Fi network. What is the best approach to detecting unauthorized connections?
                                                  Response:

                                                  • A. Enabling WPA3 authentication
                                                  • B. Using Nmap to scan open ports
                                                  • C. Monitoring MAC addresses in the access point logs
                                                  • D. Disabling SSID broadcasting
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: C  🗳️

                                                  Question #2

                                                  Which open-source tools are commonly used for network security proxying?
                                                  (Select two.)
                                                  Response:

                                                  • A. Privoxy
                                                  • B. Squid
                                                  • C. OpenVPN
                                                  • D. Wireshark
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: A,B  🗳️

                                                  Question #3

                                                  What is the role of dynamic analysis in network protocol reverse engineering?
                                                  Response:

                                                  • A. It analyzes live network traffic to understand protocol behavior
                                                  • B. It uses brute force attacks to identify weaknesses
                                                  • C. It involves executing malware to observe its behavior
                                                  • D. It inspects logs for forensic investigations
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: A  🗳️

                                                  Question #4

                                                  Which log sources are commonly used for detecting insider threats?
                                                  (Select two.)
                                                  Response:

                                                  • A. Email logs
                                                  • B. DNS logs
                                                  • C. File access logs
                                                  • D. IDS/IPS logs
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: A,C  🗳️

                                                  Question #5

                                                  Which of the following network protocols is commonly used for email transmission over the internet?
                                                  Response:

                                                  • A. FTP
                                                  • B. SMTP
                                                  • C. HTTP
                                                  • D. SNMP
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: B  🗳️

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