GIAC Network Forensic Analyst (GNFA) : GNFA

GNFA real exams

Exam Code: GNFA

Exam Name: GIAC Network Forensic Analyst (GNFA)

Updated: Jun 23, 2026

Q & A: 97 Questions and Answers

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GIAC Network Forensic Analyst (GNFA) Sample Questions:

1. Which challenges are commonly encountered when reverse engineering network protocols?
(Select two.)
Response:

A) Presence of encryption
B) Lack of documentation
C) Standardized communication patterns
D) Use of default ports


2. 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


3. What is the primary purpose of a VLAN in network architecture?
Response:

A) To increase network speed
B) To replace firewalls in enterprise environments
C) To encrypt network traffic
D) To logically segment networks without requiring physical separation


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

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


5. Which of the following is a security risk associated with open Wi-Fi networks?
Response:

A) Multi-factor authentication
B) VLAN segmentation
C) Encryption key rotation
D) Unauthenticated access


Solutions:

Question # 1
Answer: A,B
Question # 2
Answer: C
Question # 3
Answer: D
Question # 4
Answer: A,B
Question # 5
Answer: D

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