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Firewall Packet Filters - Quiz

Each question is worth one point. Select the best answer or answers for each question.
1. Packet filters, circuit-level gateways, and application-level gateways are all types of
Please select the best answer.
  A. Proxy servers
  B. Firewalls
  C. Tokens
  D. Application layers

2. What is the role of a firewall?
Please select all the correct answers.
  A. To create a choke point
  B. To log Internet activity
  C. To monitor internal communications
  D. To limit network exposure

3. Packet filters are text files that filter the contents of packets based on
Please select all the correct answers.
  A. Source and destination email addresses
  B. Source and destination TCP/UDP ports
  C. Source and destination IP addresses
  D. Source and destination client configuration

4. A systems administrator can examine an entire series of packets to determine their intent using a type of intrusion detection called
Please select the best answer.
  A. Packet filtering
  B. Stateful multi-layer inspection
  C. Screening router filtering
  D. Firewall token identification

5. The main advantage of circuit-level gateways is their ability to provide
Please select the best answer.
  A. A stable interface with internet applications
  B. Discrimination between good and bad packets
  C. Relay services between two devices
  D. Network address translation

6. What advantages do application-level gateways provide?
Please select all the correct answers.
  A. A single application filter
  B. Reverse proxy services
  C. Data analysis of an entire message
  D. Choke points

7. Of the four firewall implementations designed to create a matrix of filters and points that can process and secure information, the most simple is
Please select the best answer.
  A. A screening router
  B. A single-homed bastion host
  C. A dual-homed bastion host
  D. A screened subnet