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GIAC Certified Firewall Analyst Sample Questions:

1. John, a malicious hacker, forces a router to stop forwarding packets by flooding it with many open connections simultaneously so that all hosts behind it are effectively disabled. Which of the following attacks is John performing?

A) DoS attack
B) Replay attack
C) Rainbow attack
D) ARP spoofing

2. Which of the following actions can be taken as the countermeasures against the ARP spoofing attack?
Each correct answer represents a complete solution. Choose all that apply.

A) Looking for large amount of ARP traffic on local subnets
B) Using Private VLANs
C) Placing static ARP entries on servers and routers
D) Using 8 digit passwords for authentication

3. Which of the following command-line utilities is used to show the state of current TCP/IP connections?

A) TRACERT
B) NSLOOKUP
C) NETSTAT
D) PING

4. Which of the following can be configured so that when an alarm is activated, all doors lock and the suspect or intruder is caught between the doors in the dead-space?

A) Network Intrusion Detection System (NIDS)
B) Man trap
C) Biometric device
D) Host Intrusion Detection System (HIDS)

5. You work as a Network Administrator for a bank. For securing the bank's network, you configure a firewall and an IDS. In spite of these security measures, intruders are able to attack the network. After a close investigation, you find that your IDS is not configured properly and hence is unable to generate alarms when needed. What type of response is the IDS giving?

A) False Positive
B) True Negative
C) True Positive
D) False Negative

Solutions: