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GIAC Network Forensic Analyst (GNFA) Sample Questions:
1. You are analyzing network traffic and find a series of communications using an unknown protocol. The traffic appears structured, but there is no official documentation available. What should be your first step?
Response:
A) Block all traffic using the protocol immediately
B) Search for open-source documentation
C) Attempt brute-force decryption
D) Capture and inspect the packets using Wireshark
2. Which of the following hashing algorithms belong to the SHA-2 family?
(Select two.)
Response:
A) SHA-256
B) SHA-1
C) MD5
D) SHA-512
3. Which log sources are commonly used for detecting insider threats?
(Select two.)
Response:
A) IDS/IPS logs
B) DNS logs
C) File access logs
D) Email logs
4. What are the benefits of using NetFlow for threat detection?
(Select two.)
Response:
A) Helps detect command-and-control (C2) communications
B) Identifies large-scale data exfiltration
C) Captures real-time keystroke logging
D) Provides detailed packet-level data
5. Which of the following protocols operate at the transport layer of the OSI model?
(Select two.)
Response:
A) HTTP
B) UDP
C) TCP
D) ICMP
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: A,D | Question # 3 Answer: C,D | Question # 4 Answer: A,B | Question # 5 Answer: B,C |
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