GIAC GNFA : GIAC Network Forensic Analyst (GNFA)

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GIAC GNFA Exam Syllabus Topics:

GIAC Network Forensic Analyst (GNFA) Sample Questions:

Question 1

Which of the following fields are typically included in a NetFlow record?
(Select two.)
Response:

A. Source and destination IP addresses
B. Application payload
C. Number of packets exchanged
D. Encrypted session keys

Question 2

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. Capture and inspect the packets using Wireshark
B. Block all traffic using the protocol immediately
C. Search for open-source documentation
D. Attempt brute-force decryption

Question 3

What technique is used to analyze an unknown protocol by observing repeated patterns and structure in network traffic?
Response:

A. Code injection
B. Statistical analysis
C. SQL injection
D. Fuzzing

Question 4

What is a common attack technique used to intercept wireless network traffic?
Response:

A. Man-in-the-Middle (MITM)
B. Cross-Site Scripting (XSS)
C. ARP Spoofing
D. DNS Tunneling

Question 5

An organization suspects that an attacker is using a tunneling technique to evade detection. The analyst checks NetFlow records and sees a high number of outbound DNS queries with unusually large payloads. What type of attack is likely occurring?
Response:

A. Ransomware execution
B. Man-in-the-Middle attack
C. DNS Exfiltration
D. DDoS attack

Solutions: