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GIAC Network Forensic Analyst (GNFA) Sample Questions:

1. Which tools are useful for network protocol reverse engineering?
(Select two.)
Response:

A) Kali Linux
B) Nessus
C) Wireshark
D) IDA Pro

2. Which of the following are benefits of a software-defined network (SDN)?
(Select two.)
Response:

A) Increased reliance on physical network devices
B) Centralized control of network traffic
C) Greater flexibility and automation
D) Elimination of the need for firewalls

3. What is the primary purpose of NetFlow in network security analysis?
Response:

A) Monitoring and analyzing network traffic patterns
B) Encrypting network traffic to prevent data leaks
C) Capturing full packet data for forensic analysis
D) Blocking malicious IPs automatically

4. Which type of network topology is most resilient against a single point of failure?
Response:

A) Ring
B) Star
C) Mesh
D) Bus

5. A security analyst detects an application sending large volumes of encoded traffic to a remote server over an uncommon port. The analyst suspects data exfiltration. What should be done next?
Response:

A) Investigate the encoding scheme used in the traffic
B) Immediately block the port on the firewall
C) Terminate all active network sessions
D) Assume the traffic is normal and ignore it

Solutions: