GIAC GCIA : GIAC Certified Intrusion Analyst

  • Exam Code: GCIA
  • Exam Name: GIAC Certified Intrusion Analyst
  • Updated: Aug 30, 2026
  • Q & A: 508 Questions and Answers

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GCIA Evaluation Structure

As mentioned earlier, the GCIA exam is necessary for obtaining the GIAC Certified Intrusion Analyst certification. Luckily though, this is the only exam necessary for obtaining this designation. When it comes to the structure, the candidates should know that this is a proctored exam. Also, the exam-takers will need to pay a registration fee. Its value is $1,999. As for the number of questions, this validation includes 100 to 150 inquiries. The time allotted for any candidate who takes the GIAC GCIA exam is 240 minutes. During this time, the examinees will need to answer as many questions as possible and obtain a minimum passing score of 68%.

The GIAC GCIA exam is taken by those candidates who are interested in obtaining the GIAC Certified Intrusion Analyst certification.

Reference: http://www.giac.org/certification/certified-intrusion-analyst-gcia

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GIAC GCIA Exam Syllabus Topics:

SectionObjectives
Fundamentals of Traffic Analysis and Application Protocols- IPv6
  • 1. IPv6 concepts and differences from IPv4
    - UDP and ICMP
    • 1. UDP and ICMP protocol analysis
      - TCP
      • 1. TCP behavior analysis and anomaly identification
        - Concepts of TCP/IP and the Link Layer
        • 1. TCP/IP communications model and link layer operations
          - Application Protocols
          • 1. Application layer protocol dissection and analysis
            Network Traffic Forensics and Monitoring- Wireshark Fundamentals
            • 1. Analyzing normal and malicious network traffic
              - Fragmentation
              • 1. Fragmentation analysis and fragmentation-based attacks
                - Packet Engineering
                • 1. Packet crafting and manipulation
                  - SiLK and Other Traffic Analysis Tools
                  • 1. Traffic and flow analysis tools
                    - IP Headers
                    • 1. IP packet header analysis
                      - Network Forensics and Traffic Analysis
                      • 1. Analyzing packet captures, NetFlow, and log data
                        - Tcpdump Filters
                        • 1. Creating tcpdump filters based on criteria
                          Open-Source Intrusion Detection Systems (IDS): Snort and Zeek- Advanced IDS Concepts
                          • 1. IDS tuning methods and correlation issues
                            - Intrusion Detection System Rules
                            • 1. Creating IDS rules to detect malicious activity
                              - IDS Fundamentals and Network Architecture
                              • 1. IDS concepts, architecture options, and deployment considerations

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