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GIAC Network Forensic Analyst (GNFA) Sample Questions:

1. What is the primary purpose of ICMP (Internet Control Message Protocol)?
Response:

A) Encrypting communication between endpoints
B) Managing TCP handshakes
C) Routing data between networks
D) Performing network diagnostics and reporting errors

2. A security analyst is tasked with identifying unauthorized devices connecting to a company's Wi-Fi network. What is the best approach to detecting unauthorized connections?
Response:

A) Using Nmap to scan open ports
B) Disabling SSID broadcasting
C) Monitoring MAC addresses in the access point logs
D) Enabling WPA3 authentication

3. What is the primary purpose of cryptographic salt in password hashing?
Response:

A) To add randomness to password hashes, preventing precomputed attacks
B) To replace the original password with a hash value
C) To encrypt passwords using asymmetric encryption
D) To shorten the length of the hash for storage efficiency

4. What is the primary goal of network protocol reverse engineering?
Response:

A) To encrypt network traffic for security purposes
B) To analyze and understand undocumented or proprietary protocols
C) To design new network protocols
D) To replace network firewalls with better security

5. Which of the following hashing algorithms belong to the SHA-2 family?
(Select two.)
Response:

A) MD5
B) SHA-512
C) SHA-256
D) SHA-1

Solutions: