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GIAC Network Forensic Analyst (GNFA) Sample Questions:

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

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

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

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

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

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

4. A network administrator notices that an internal web server is being accessed from multiple external sources in an unusual pattern. What security proxy feature would help in identifying and mitigating this attack?
Response:

A) DNS caching
B) Application-layer filtering
C) Port forwarding
D) Data compression

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

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

Solutions: