Computer Networks Overview
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Questions and Answers

Which component physically connects end systems to the network core?

  • Switches (correct)
  • Servers
  • Hubs
  • Routers
  • What does the Internet mainly consist of?

  • Network of networks (correct)
  • Single large network
  • End systems only
  • Network core only
  • What aspect of a computer network is considered when examining delay and throughput?

  • Software applications
  • Physical media quality
  • Transmission, propagation, and queuing delays (correct)
  • Hardware components
  • Which architectural principles are highlighted in computer networking?

    <p>Protocol layering and service models</p> Signup and view all the answers

    What kind of attacks are computer networks vulnerable to?

    <p>Various types of attacks</p> Signup and view all the answers

    What is considered as the principal vehicle for discussing computer networks and their protocols in this book?

    <p>The public Internet</p> Signup and view all the answers

    What is the Internet primarily described as in terms of networking infrastructure?

    <p>A system that provides services to distributed applications</p> Signup and view all the answers

    In Internet jargon, what are all the connected devices referred to as?

    <p>Hosts or end systems</p> Signup and view all the answers

    Approximately how many devices were connected to the Internet in 2015?

    <p>5 billion</p> Signup and view all the answers

    What is a common term used to refer to devices like laptops, smartphones, tablets, and TVs that are connected to the Internet?

    <p>Hosts or end systems</p> Signup and view all the answers

    According to a prediction in 2014, how many devices were estimated to be connected to the Internet by 2020?

    <p>25 billion</p> Signup and view all the answers

    What percentage of the world's population was estimated to be using the Internet in 2015?

    <p>Approximately 40%</p> Signup and view all the answers

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