Computer Networks Overview
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Questions and Answers

What is the Internet?

  • A network of networks (correct)
  • A closed system with limited access
  • A single network connecting all devices worldwide
  • A local area network (LAN)

    • Which aspect is covered in the second half of the chapter about computer networks?

  • Brief history of computer networking
  • Hardware components of switches
  • Vulnerabilities in computer networks
  • Simple quantitative models for end-to-end throughput and delay (correct)

    • How are computer networks described in terms of vulnerabilities?

  • Vulnerable to many different types of attacks (correct)
  • Not prone to any vulnerabilities
  • Vulnerable to only one type of attack
  • Completely secure from all types of attacks

    • What are some key architectural principles in computer networking mentioned?

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

    What is the role of access networks in computer networking?

    <p>Connecting end systems to the network core</p> Signup and view all the answers

    Why is it important to consider transmission, propagation, and queuing delays in a computer network?

    <p>For simple quantitative modeling of throughput and delay</p> Signup and view all the answers

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

    <p>A computer network</p> Signup and view all the answers

    Which term is used in Internet jargon to refer to all connected devices?

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

    What is the estimated number of Internet users worldwide in 2015?

    <p>Over 3.2 billion</p> Signup and view all the answers

    According to estimates, what is the projected number of devices connected to the Internet by 2020?

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

    Which type of devices are increasingly being connected to the Internet apart from traditional desktop PCs and servers?

    <p>Home security systems and cars</p> Signup and view all the answers

    What percentage of the world population comprised Internet users in 2015?

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

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