Real GIAC GCIA practice exam questions for easy pass!
Last Updated: Jun 01, 2026
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Reference: http://www.giac.org/certification/certified-intrusion-analyst-gcia
| Topic | Details |
|---|---|
| IPv6 | - The candidate will demonstrate knowledge of IPv6 and how it differs from IPv4. |
| Network Traffic Analysis | - The candidate will demonstrate the ability to analyze network and application traffic to identify both normal and malicious behaviors. |
| UDP and ICMP | - The candidate will demonstrate understanding of the UDP and ICMP protocols and the ability to discern between typical and anomalous behavior. |
| Advanced IDS Concepts | - The candidate will demonstrate an understanding of IDS tuning methods and correlation issues. |
| Fragmentation | - The candidate will demonstrate understanding of how fragmentation works, and how to identify fragmentation and fragmentation-based attacks in packet captures. |
| DNS | - The candidate will demonstrate an understanding of how DNS works for both legitimate and malicious purposes. |
| Application Protocols | - The candidate will demonstrate knowledge and skill relating to application layer protocol dissection and analysis. |
| Advanced Analysis and Network Forensics | - The candidate will demonstrate competence in analyzing data from multiple sources (e.g. full packet capture, netflow, log files) as part of a forensic investigation. |
| Packet Engineering | - The candidate will demonstrate knowledge relating to packet crafting and manipulation. |
| IDS Fundamentals and Network Architecture | - The candidate will demonstrate knowledge of fundamental IDS concepts, such as network architecture options and benefits/weaknesses of common IDS systems. |
| Tcpdump Filters | - The candidate will demonstrate ability to craft tcpdump filters that match on given criteria. |
| Silk and Other Traffic Analysis Tools | - The candidate will demonstrate an understanding of SiLK and other tools to perform network traffic and flow analysis. |
| Concepts of TCP/IP and the Link Layer | - The candidate will demonstrate understanding of the TCP/IP communications model and link layer operations. |
| IP Headers | - The candidate will demonstrate the ability to dissect IP packet headers and analyze them for normal and anomalous values that may point to security issues. |
| IDS Rules | - The candidate will create effective IDS rules to detect varied types of malicious activity. |
| Wireshark Fundamentals | - The candidate will demonstrate skill associated with traffic analysis using Wireshark with an intermediate degree of proficiency. |
| TCP | - The candidate will demonstrate understanding of the TCP protocol and the ability to discern between typical and anomalous behavior. |
The GIAC GCIA certification exam targets those individuals who want to leverage their knowledge on host monitoring, intrusion detection, and traffic analysis. This test is also suitable for any practitioner who occupies roles dedicated to intrusion detection. Then, system analysts or network engineers are interested in taking this certification test. Another category of specialists is formed of network administrators, security analysts, and hands-on security managers. Apart from them, any individual who wants to consolidate his/her skills in monitoring and configuring systems dedicated to intrusion detection, or interpret different data for network traffic analysis can be a target candidate for this GCIA test.
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