Difficulty
GCIAHow hard is GCIA?
GIAC classifies GCIA at the intermediate level. It is 1 proctored exam, sat in 240 minutes. No invented pass rates anywhere on this page.
The short answer
GIAC Certified Intrusion Analyst (GCIA) is a mid-level exam. It assumes working familiarity with the field it covers.
With a year or two of hands-on exposure to the subject area, preparation is mostly review plus practice under the clock, with real gaps to close where an adjacent role never touched the material. Coming in cold, plan for more study time and use the objectives list to find what you have never touched.
What actually makes it hard
The items are not all multiple choice.
A CyberLive exam. Some of the questions put you into a live machine with the real tools and score what you do there. GIAC does not publish how many of the 106 are hands-on, so neither do we. They take longer than a multiple-choice question, and you have to perform the task rather than recognize an answer.
Breadth across domains.
The objectives cover 6 areas and the exam samples all of them. GIAC publishes no weighting, so nothing tells you which of them carry the most marks.
The clock.
106 questions in 240 minutes is about 2.3 minutes each, including the time to read the stem and the options. Reading about the exam does not rehearse that pace; a full-length sitting against the clock does.
Where the weight sits
Difficulty is not spread evenly, and GIAC publishes no weighting that says where it sits. The percentages below are ours:
- Traffic Analysis Tools20%
- Intrusion Detection Systems19%
- Concepts of TCP/IP and the Link Layer18%
- IP Headers, Fragmentation, and IPv616%
- UDP, ICMP, and Application Protocols15%
- Network Forensics and Traffic Analysis12%
GIAC publishes the GCIA objectives as an unweighted list of outcome statements covering TCP/IP and the link layer, IP headers, fragmentation, IPv6, UDP and ICMP, application protocols, tcpdump filters, Wireshark, SiLK, packet engineering, IDS fundamentals and rules, advanced IDS concepts, and network forensics. It attaches no percentages. The six groupings above and their percentages are ours, built by clustering GIAC's published objective titles so the material can be studied in blocks. They are a study aid, not an official GIAC weighting, and GIAC does not endorse them.
Where candidates struggle: GIAC allows 4 hours for 106 questions on GCIA, so read packets faster than you read notes: the exam rewards recognizing a protocol anomaly in a capture more than reciting a header layout. Practice in tcpdump and Wireshark against real traffic rather than only reading about the fields.
How to find out where you stand
The fastest honest read on difficulty is not an opinion page, ours included. Answer real GCIA questions and see which domains push back. Five questions from across every practice exam, with the full explanation on each.
Keep reading
- GCIA practice questions
Free sample questions with the full explanation on every answer.
- Free GCIA practice test
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- GCIA passing score
The exact cut score, what kind of number it is, and the retake terms.
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Original questions written from the published objectives, with the concept, the reasoning, and a note on every wrong option. No account needed to start.
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