Computer Network Security
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Questions and Answers

What is a major function of a guard in network security?

  • Decrypting encrypted email messages
  • Ensuring physical security of hardware
  • Managing login credentials for users
  • Interpreting data at the protocol level and responding (correct)

    • Which feature might make the distinction between an application proxy and a guard fuzzy?

  • High data transfer rates
  • Lower latency in data transfer
  • Enhanced protection features (correct)
  • Increased number of users connected

    • What is NOT a programmable rule that a guard could implement?

  • Filter documents containing specific keywords
  • Limit the number of email messages a user can receive
  • Limit users' web bandwidth
  • Run operating system updates (correct)

    • Where is a Demilitarized Zone (DMZ) typically located in network architecture?

    <p>Between two firewalls</p> Signup and view all the answers

    What is the primary purpose of a personal firewall?

    <p>To protect individual devices from network threats</p> Signup and view all the answers

    Which type of server is most likely to be found in a DMZ?

    <p>Web page server</p> Signup and view all the answers

    What is the main characteristic of the Ping of Death attack?

    <p>Sending a single large packet</p> Signup and view all the answers

    What is the primary goal of a Teardrop attack?

    <p>To crash or halt the target system</p> Signup and view all the answers

    What is the main difference between a Land attack and a Teardrop attack?

    <p>Land attacks use multiple packets, while Teardrop attacks use a single packet</p> Signup and view all the answers

    What is the name of the DDoS tool that exploited Sun Solaris systems?

    <p>Tribe Flood Network</p> Signup and view all the answers

    What is the primary purpose of a DDoS attack?

    <p>To crash or halt the target system</p> Signup and view all the answers

    What is the name of the DDoS attack that targeted Amazon Web Services?

    <p>AWS Attack</p> Signup and view all the answers

    What is the name of the DDoS tool that is similar to LOIC?

    <p>XOIC</p> Signup and view all the answers

    What is the primary defense against Denial of Service attacks?

    <p>Keeping patches updated on all systems</p> Signup and view all the answers

    What is one main function of a firewall?

    <p>Filtering traffic between networks</p> Signup and view all the answers

    Which characteristic is NOT a requirement for a firewall to be considered a reference monitor?

    <p>Encrypts all communications</p> Signup and view all the answers

    In the context of Virtual Private Networks (VPN), what role does a firewall play?

    <p>Filtering encrypted traffic</p> Signup and view all the answers

    Which is NOT mentioned as an advantage of firewalls running as dedicated devices?

    <p>Difficult to analyze rigorously</p> Signup and view all the answers

    What does a firewall implement to determine traffic flow?

    <p>Security policies</p> Signup and view all the answers

    Which feature is essential for a firewall to prevent circumvention?

    <p>Always being invoked</p> Signup and view all the answers

    What is the main purpose of a Digital Certificate in SSL?

    <p>Authenticate the identity of the parties involved</p> Signup and view all the answers

    What is a common use of a Demilitarized Zone (DMZ) in network security?

    <p>Providing a buffer zone between the internal network and the external network</p> Signup and view all the answers

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