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GIAC Network Forensic Analyst (GNFA) Sample Questions:

1. Which of the following is an indication of a custom or proprietary network protocol?
Response:

A) Use of open-source encryption libraries
B) Presence of cleartext credentials in packets
C) Standard TCP and UDP port usage
D) Non-standard packet structures and headers

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) DDoS attack
C) DNS Exfiltration
D) Man-in-the-Middle attack

3. Your company is implementing a Zero Trust network model. Which approach would best align with Zero Trust principles?
Response:

A) Using only perimeter-based firewalls
B) Allowing unrestricted lateral movement within the network
C) Granting access based on IP address
D) Requiring continuous authentication and strict access controls

4. What is the primary purpose of security event logging?
Response:

A) To prevent all cyberattacks before they occur
B) To replace the need for intrusion detection systems
C) To store all network activity indefinitely
D) To detect, investigate, and respond to security incidents

5. Which best practices should organizations follow when configuring log retention policies?
(Select two.)
Response:

A) Retain logs based on regulatory compliance requirements
B) Encrypt logs to prevent unauthorized access
C) Store all logs indefinitely
D) Delete all logs after 30 days to save storage space

Solutions: