Internet and Network Definitions
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Questions and Answers

What is the function of a packet switch?

  • Take a packet and store it for future use
  • Scan the packet for viruses before forwarding
  • Forward a packet from one communication link to another (correct)
  • Encrypt the packet for secure transmission

    • What is the purpose of Frequency Division Multiplexing (FDM)?

  • To encrypt data for secure transmission
  • To convert digital data to analog signals
  • To compress data for faster transmission
  • To transmit different channels in different frequency bands (correct)

    • What is the role of an Internet Service Provider (ISP)?

  • Create and maintain computer networks
  • Develop new communication protocols
  • Provide network coverage within buildings using 802.11 protocol
  • Operate a network of packet switches and communication links (correct)

    • What is the main function of a Local Area Network (LAN) or Ethernet?

    <p>Connect multiple sub-networks and servers via interconnected switches</p> Signup and view all the answers

    What is the primary purpose of Wide-area Wireless / cellular networks / Global System for Mobile communication (GSM)?

    <p>To provide network coverage within 1-5 km using 3G, 4G, or 5G technologies</p> Signup and view all the answers

    What is the role of Protocol in networking?

    <p>Determine the format and order of messages exchanged between communicating entities</p> Signup and view all the answers

    Which type of physical media allows signals to propagate freely?

    <p>Electro-magnetic radio waves</p> Signup and view all the answers

    What type of communication method involves establishing a dedicated communication path before data transmission?

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

    What is the characteristic of fiber optic cable mentioned in the text?

    <p>Carries light pulses, each pulse representing a bit</p> Signup and view all the answers

    In which type of media does two insulated copper wires transmit data in electron format?

    <p>Twisted pair copper</p> Signup and view all the answers

    What is the purpose of routing in network communication?

    <p>Determines source-destination route taken by data packets using routing algorithms</p> Signup and view all the answers

    When does packet loss occur in a network?

    <p>When the network discarded some packets due to excessive traffic</p> Signup and view all the answers

    What does nodal processing refer to in network communication?

    <p>The time taken by the switch to read data packets header information (source, destination, and length)</p> Signup and view all the answers

    What is the role of forwarding in network communication?

    <p>Moves packets from router’s input to appropriate router output</p> Signup and view all the answers

    What does throughput refer to in network communication?

    <p>The rate at which bits are transferred between sender/receiver</p> Signup and view all the answers

    What is the characteristic of Distributed Denial of Service (DDoS) attack?

    <p>Attackers make resources (server, bandwidth) unavailable</p> Signup and view all the answers

    Which protocol is used for transferring web pages over the internet?

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

    What does the acronym WAN stand for in networking?

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

    Which protocol is used for the delivery of email over the internet?

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

    What is the function of DNS in networking?

    <p>Resolves domain names to IP addresses</p> Signup and view all the answers

    What is the purpose of a DSLAM in a Digital Subscriber Line (DSL) network?

    <p>Aggregates multiple DSL connections onto a high-speed backbone network</p> Signup and view all the answers

    What does the acronym CPU stand for in computer systems?

    <p>Central Processing Unit</p> Signup and view all the answers

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