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Questions and Answers

What is the primary function of the transport layer in the Internet protocol stack?

  • Data transfer between neighboring network elements
  • Routing of datagrams from source to destination network
  • Process-process data transfer (correct)
  • Supporting network applications

    • What is the main difference between the Internet protocol stack and the ISO/OSI reference model?

  • The ISO/OSI reference model has more layers
  • The ISO/OSI reference model is missing the physical layer
  • The Internet protocol stack is missing the presentation and session layers (correct)
  • The Internet protocol stack has more layers

    • What is the primary function of the application layer in the Internet protocol stack?

  • Data transfer between neighboring network elements
  • Process-process data transfer
  • Routing of datagrams from source to destination network
  • Supporting network applications such as FTP and HTTP (correct)

    • What is the primary focus of the field of network security?

    <p>Defending networks against attacks</p> Signup and view all the answers

    What is the term for the process of adding headers to data as it moves down the protocol stack?

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

    What is the main reason why the Internet protocol designers are playing "catchup" in terms of security?

    <p>The Internet was originally designed without much security in mind</p> Signup and view all the answers

    What is the term for the process of moving data between neighboring network elements?

    <p>Data transfer</p> Signup and view all the answers

    What is the primary function of the network layer in the Internet protocol stack?

    <p>Routing of datagrams from source to destination network</p> Signup and view all the answers

    What is the primary function of the physical layer in the Internet protocol stack?

    <p>Transmitting bits over a physical medium</p> Signup and view all the answers

    What is the term for the combination of delay, loss, and throughput in networks?

    <p>Network performance</p> Signup and view all the answers

    Malware can only get into a host through a virus.

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

    Infected hosts can be used for spam and DDoS attacks.

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

    Packet sniffing is only possible in wireless networks.

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

    Wireshark is a proprietary packet-sniffer software.

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

    IP spoofing is only possible in IPv6 networks.

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

    The first ARPAnet node was operational in 1965.

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

    Cerf and Kahn's internetworking principles included a stateful router architecture.

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

    The Internet had 100,000 hosts connected to it by 1980.

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

    ARPAnet was decommissioned in 1990.

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

    The Internet had approximately 50 million users by 2000.

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

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