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GIAC Network Forensic Analyst (GNFA) Sample Questions:

1. A security analyst is reviewing NetFlow data and notices a sudden increase in outbound connections to an unfamiliar IP address. The majority of the connections originate from a single internal workstation. What is the most likely cause?
Response:

A) An error in NetFlow collection
B) Normal traffic fluctuation
C) A user downloading a large file
D) A botnet infection exfiltrating data

2. Which field in a NetFlow record can help determine if lateral movement is occurring within a network?
Response:

A) Destination IP Address
B) Source and Destination Port
C) Destination IP Address and Source and Destination Port
D) Protocol Type

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

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

4. Which protocol is used to translate IP addresses to MAC addresses on a local network?
Response:

A) ICMP
B) DHCP
C) DNS
D) ARP

5. What are the main functions of the Domain Name System (DNS)?
(Select two.)
Response:

A) Assigning MAC addresses to devices
B) Distributing network traffic among multiple servers
C) Resolving domain names to IP addresses
D) Managing email servers

Solutions: