GIAC Certified Firewall Analyst: GCFW Exam
GCFW Questions & Answers
Exam Code: GCFW
Exam Name: GIAC Certified Firewall Analyst
Q & A: 381 Q&As
QUESTION NO: 1
Which of the following can be monitored by using the host intrusion detection system (HIDS)?
Each correct answer represents a complete solution. Choose two.
A. Computer performance
B. File system integrity
C. Storage space on computers
D. System files
Answer: B,D
QUESTION NO: 2
Which of the following components are usually found in an Intrusion detection system (IDS)?
Each correct answer represents a complete solution. Choose two.
A. Firewall
B. Console
C. Gateway
D. Modem
E. Sensor
Answer: B,E
QUESTION NO: 3
Which of the following are the countermeasures against a man-in-the-middle attack?
Each correct answer represents a complete solution. Choose all that apply.
A. Using Secret keys for authentication.
B. Using public key infrastructure authentication.
C. Using Off-channel verification.
D. Using basic authentication.
Answer: A,B,C
QUESTION NO: 4
Which of the following ICMPv6 neighbor discovery messages is sent by hosts to request an
immediate router advertisement, instead of waiting for the next scheduled advertisement?
A. Router Advertisement
B. Neighbor Advertisement
C. Router Solicitation
D. Neighbor Solicitation
Answer: C
QUESTION NO: 5
Which of the following statements about the traceroute utility are true?
Each correct answer represents a complete solution. Choose all that apply.
A. It generates a buffer overflow exploit by transforming an attack shell code so that the new
attack shell code cannot be recognized by any Intrusion Detection Systems.
B. It uses ICMP echo packets to display the Fully Qualified Domain Name (FQDN) and the IP
address of each gateway along the route to the remote host.
C. It records the time taken for a round trip for each packet at each router.
D. It is an online tool that performs polymorphic shell code attacks.
Answer: B,C
QUESTION NO: 6
Which of the following intrusion detection systems (IDS) monitors network traffic and compares it
against an established baseline?
A. Network-based
B. File-based
C. Signature-based
D. Anomaly-based
Answer: Dorder generic cialis
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QUESTION NO: 7
You work as a Network Administrator for Net Perfect Inc. The company has a TCP/IP network.
You have been assigned a task to configure security mechanisms for the network of the company.
You have decided to configure a packet filtering firewall. Which of the following may be the
reasons that made you choose a packet filtering firewall as a security mechanism?
Each correct answer represents a complete solution. Choose all that apply.
A. It makes security transparent to end-users which provide easy use of the client application s.
B. It prevents application-layer attacks.
C. It is easy to install packet filtering firewalls in comparison to the other network security sol
utions.
D. It easily matches most of the fields in Layer 3 packets and Layer 4 segment headers, and thus,
provides a lot of flexibility in implementing security policies.
Answer: A,C,D
QUESTION NO: 8
Which of the following types of Intrusion Detection Systems consists of an agent on a host that
identifies intrusions by analyzing system calls, application logs, file-system modifications (binaries,
password files, capability/acl databases) and other host activities and state?
A. HIDS
B. NIDS
C. APIDS
D. PIDS
Answer: A
QUESTION NO: 9
A packet filtering firewall inspects each packet passing through the network and accepts or rejects
it based on user-defined rules. Based on which of the following information are these rules set to
filter the packets?
Each correct answer represents a complete solution. Choose all that apply.
A. Layer 4 protocol information
B. Actual data in the packet
C. Interface of sent or received traffic
D. Source and destination Layer 3 address
Answer: A,C,D
QUESTION NO: 10
Adam works as a Security Administrator for Umbrella Inc. A project has been assigned to him to
secure access to the network of the company from all possible entry points. He segmented the
network into several subnets and installed firewalls all over the network. He has placed very
stringent rules on all the firewalls, blocking everything in and out except the ports that must be
used. He does need to have port 80 open since his company hosts a website that must be
accessed from the Internet. Adam is still worried about the programs like Hping2 that can get into
a network through covert channels.
Which of the following is the most effective way to protect the network of the company from an
attacker using Hping2 to scan his internal network?
A. Block ICMP type 13 messages
B. Block ICMP type 3 messages
C. Block all outgoing traffic on port 21
D. Block all outgoing traffic on port 53
Answer: A
