Computer Network and Internet Basics
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Questions and Answers

What is the main difference between a network and an internet?

  • A network is managed by a single organization, while an internet is a collaboration of multiple organizations.
  • A network only consists of physical devices, while an internet includes both physical and virtual connections.
  • A network is a group of connected devices, while an internet is two or more networks that can communicate with each other. (correct)
  • A network is limited to a single location, while an internet spans across different geographical locations.

    • What are examples of communication links mentioned in the text?

  • Ethernet, Token Ring, FDDI
  • LAN, WAN, PAN
  • Bluetooth, NFC, Infrared
  • Fiber, copper, radio spectrum (correct)

    • What is the role of routers in a network?

  • Routers manage the physical connections within a network
  • Routers forward packets (chunks of data) (correct)
  • Routers ensure data security and encryption
  • Routers provide internet access to end systems

    • What was the significance of the year 1969 in the context of internet communication system?

    <p>It marked the emergence of internet communication system.</p> Signup and view all the answers

    How did the capacity of undersea cables change from the 1960s to 1996?

    <p>It increased significantly from carrying 138 calls to carrying 1.5M calls.</p> Signup and view all the answers

    In circuit switching, what happens during the setup phase?

    <p>A dedicated communication path is established</p> Signup and view all the answers

    What type of network involves data being sent in discrete portions?

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

    What is a characteristic of circuit switching in terms of bandwidth?

    <p>A circuit occupies a fixed capacity of each link for the entire connection duration</p> Signup and view all the answers

    What is the primary difference between datagram networks and virtual circuit networks?

    <p>Each packet is switched independently in datagram networks</p> Signup and view all the answers

    What is a key aspect of the transmit data phase in circuit switching?

    <p>Data transfer phase involves sending data over the established circuit</p> Signup and view all the answers

    In circuit switching, what happens during the teardown phase?

    <p>The dedicated resources are released and the circuit is terminated</p> Signup and view all the answers

    What is a key characteristic of packet switching in computer networks?

    <p>Data is sent in discrete portions</p> Signup and view all the answers

    What is the primary difference between circuit switching and packet switching in terms of resource allocation?

    <p>Circuit switching requires dedicated resources for the entire duration of data transfer, while packet switching does not</p> Signup and view all the answers

    What is a key aspect of broadcast networks in communication networks?

    <p>End nodes share a common channel (TV, radio…)</p> Signup and view all the answers

    What is a distinguishing feature of virtual circuit networks in computer networks?

    <p>Each packet follows a pre-established path through the network</p> Signup and view all the answers

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