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GIAC Network Forensic Analyst (GNFA) Sample Questions:

1. A network administrator is investigating slow network performance and suspects excessive broadcast traffic. The admin captures packets and sees that a large number of ARP requests are being sent. Which of the following attacks is most likely occurring?
Response:

A) TCP SYN Flood
B) ARP Poisoning
C) ICMP Flood
D) DNS Spoofing

2. Which of the following are characteristics of the TCP protocol?
(Select two.)
Response:

A) Reliable data transfer
B) Used for real-time applications
C) Best-effort delivery
D) Connection-oriented communication

3. Which of the following are features of a forward proxy?
(Select two.)
Response:

A) Functions only at the transport layer
B) Protects internal servers from direct exposure
C) Caches frequently accessed web content
D) Filters outgoing client requests

4. An administrator notices unusual traffic patterns where a single workstation is attempting to connect to multiple internal servers within minutes. What should be the first step in investigating this activity?
Response:

A) Block all outbound connections from the workstation
B) Review network segmentation policies
C) Disable the workstation immediately
D) Analyze the NetFlow records and IDS alerts

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

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

Solutions: