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 (C)</p> Signup and view all the answers

What kind of attacks are computer networks vulnerable to?

<p>Various types of attacks (C)</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 (D)</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 (A)</p> Signup and view all the answers

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

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

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

<p>5 billion (A)</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 (B)</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 (C)</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% (A)</p> Signup and view all the answers
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