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GIAC Network Forensic Analyst (GNFA) Sample Questions:

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

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

2. Which log format is commonly used in UNIX/Linux environments?
Response:

A) Windows Event Log
B) NetFlow
C) Syslog
D) JSON

3. A company wants to prevent employees from accessing malicious websites while browsing the internet. Which type of proxy would best meet this requirement?
Response:

A) Reverse proxy
B) Network intrusion detection system
C) Transparent forward proxy
D) Load balancer

4. A company is experiencing a data breach and suspects an insider threat. Which logs would be most useful in identifying the responsible party?
Response:

A) DNS query logs
B) Firewall logs
C) File access and authentication logs
D) Web server logs

5. Which actions can be taken after detecting malicious activity using NetFlow?
(Select two.)
Response:

A) Decrypt all traffic for deeper analysis
B) Modify encryption keys dynamically
C) Capture full packet data for forensic analysis
D) Block malicious IP addresses at the firewall

Solutions: