Computer Networks Lecture 1: Introduction to Computer Networks and Internet
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Questions and Answers

What is the primary focus of Chapter 1 in the book 'Computer Networking: A Top Down Approach'?

  • Transport Layer
  • Network Layer
  • Application Layer
  • Introduction to computer networks and Internet (correct)
  • Which part of a computer network is responsible for hosts, access networks, and physical media?

  • Network Edge (correct)
  • Transport Layer
  • Application Layer
  • Network Core
  • What are the two types of switching used in the Internet structure?

  • Message switching and circuit switching
  • Packet switching and circuit switching (correct)
  • Frame relay switching and cell switching
  • Datagram switching and virtual circuit switching
  • What are the three performance metrics of a computer network mentioned in the lecture agenda?

    <p>Throughput, jitter, packet loss</p> Signup and view all the answers

    According to the information provided, what is the Internet primarily considered as?

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

    Where can one find details about the Internet history and future according to the mentioned resources?

    <p>Lecture Agenda: Introduction to the Internet what’s a protocol. Internet History Internet Future Access Networks</p> Signup and view all the answers

    What is the Internet?

    <p>A computer network that interconnects billions of computing devices worldwide</p> Signup and view all the answers

    Which of the following is NOT a component of the Internet?

    <p>Operating systems</p> Signup and view all the answers

    What are traditional computing devices connected to the Internet?

    <p>Desktop PCs and Linux workstations</p> Signup and view all the answers

    What is the function of a packet switch?

    <p>To forward packets between different networks</p> Signup and view all the answers

    Which type of communication link is made up of copper wire, optical fiber, and radio spectrum?

    <p>Both wired and wireless communication links</p> Signup and view all the answers

    What does WAN stand for in the context of networking?

    <p>Wide Area Network</p> Signup and view all the answers

    What is the function of a router in a network?

    <p>To forward packets between different networks</p> Signup and view all the answers

    Which term refers to computing devices or hosts at the network edges?

    <p>End systems</p> Signup and view all the answers

    What is the primary focus of Chapter 2 in the book 'Computer Networking: A Top Down Approach'?

    <p>Application Layer</p> Signup and view all the answers

    Which type of communication link is made up of copper wire, optical fiber, and radio spectrum?

    <p>Wireless link</p> Signup and view all the answers

    What does WAN stand for in the context of networking?

    <p>Wide Area Network</p> Signup and view all the answers

    What is the function of a router in a network?

    <p>Transmits data between access networks</p> Signup and view all the answers

    What are the two types of switching used in the Internet structure?

    <p>Packet switching and Circuit switching</p> Signup and view all the answers

    Which term refers to computing devices or hosts at the network edges?

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

    What type of network is the Internet?

    <p>Wide Area Network (WAN)</p> Signup and view all the answers

    What are non-traditional devices connected to the Internet commonly referred to as?

    <p>Internet of Things (IoT) devices</p> Signup and view all the answers

    What is the transmission rate of a link measured in?

    <p>Bits/second</p> Signup and view all the answers

    Which type of physical media is NOT mentioned in the text as part of communication links?

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

    Which type of switch is typically used for forwarding packets between different networks?

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

    How are data segments sent from one end system to another?

    <p>As packets</p> Signup and view all the answers

    What is the function of a packet switch in a computer network?

    <p>Forward data packets</p> Signup and view all the answers

    What are the interconnected routers/switches and network of networks collectively referred to as?

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

    "Internet things" that are being connected to the Internet include which of the following?

    <p>All of the above</p> Signup and view all the answers

    Study Notes

    • The Internet is a global computer network connecting billions of devices.
    • It's a Wide Area Network (WAN), interlinking hosts, access networks, physical media, packet/circuit switching, network core, protocols, applications, and hardware/software.
    • Computing devices include traditional PCs and servers, as well as non-traditional "Internet things" like smartphones, cars, and appliances.
    • Any device with a microprocessor is a host or end system.
    • Communication links join end systems; they use various physical media like copper, fiber, radio, and satellite, with varying transmission rates.
    • Packet switches forward data packets to their destination; common types are routers and link-layer switches.
    • The Internet has evolved from a research project to a global infrastructure, with ongoing advancements.
    • Internet access networks include global ISPs, home networks, and institutional/regional ISPs.
    • End systems send data in packets, which are reassembled at the destination.
    • Network core consists of interconnected routers and switches, forwarding packets between networks.
    • Protocols govern how devices communicate, while applications provide specific services to users.
    • End systems segment data into packets, adding headers for transmission and reassembly at the destination.
    • Packet switches forward packets to their next hop based on routing information.
    • Routers connect different networks and use routing algorithms to determine best paths for packets.
    • Link-layer switches operate within a single network, forwarding packets based on MAC addresses.
    • The Internet's structure includes multiple layers, including application, transport, network, and link layers.
    • Performance issues include packet loss, delay, and throughput, which impact network efficiency.
    • Security models and services protect data confidentiality, integrity, and availability.

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    Description

    Test your knowledge on the fundamentals of computer networks and the Internet with this quiz based on the lecture by Dr. Dina Fawzy. The content is aligned with Chapter 1 of the book 'Computer Networking: A Top Down Approach' by Jim Kurose and Keith Ross.

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