Communication Networks Overview
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Questions and Answers

What is a disadvantage of the client-server model?

  • It requires constant maintenance of individual resources.
  • It ensures enhanced security and control over resources.
  • A server failure can disrupt the entire network. (correct)
  • It allows for decentralized resource management.

    • What is a main advantage of a peer-to-peer (P2P) network?

  • Reduced resource redundancy.
  • Centralized control of resources.
  • Increased security through controlled access.
  • Resources are distributed, minimizing downtime. (correct)

    • Which network type covers a very small geographic area, such as a house or lab?

  • Local Area Network (LAN) (correct)
  • Wide Area Network (WAN)
  • Global Area Network (GAN)
  • Metropolitan Area Network (MAN)

    • Which communication protocol is used to transfer web pages from a web server to a client?

    <p>Hyper Text Transfer Protocol (HTTP)</p> Signup and view all the answers

    How does HTTPS improve upon HTTP in web communication?

    <p>By providing encryption for secure transmission.</p> Signup and view all the answers

    What is a potential problem in a P2P network?

    <p>Reduced control over shared resources.</p> Signup and view all the answers

    What type of network is primarily formed by the interconnection of many smaller networks?

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

    Which protocol provides secure transmission of files over a network?

    <p>Simple File Transfer Protocol (SFTP)</p> Signup and view all the answers

    What is the primary feature of a Mobile Network?

    <p>It includes interconnected mobile devices.</p> Signup and view all the answers

    In computer networks, what does the term 'Source' refer to?

    <p>The device that initiates communication.</p> Signup and view all the answers

    Which type of network architecture involves a server providing resources to multiple clients?

    <p>Client/Server Network</p> Signup and view all the answers

    What is one advantage of a Client/Server Network model?

    <p>It allows for centralized administration of resources.</p> Signup and view all the answers

    What role do communication links play in a computer network?

    <p>They provide a means for devices to communicate.</p> Signup and view all the answers

    What distinguishes a Computer Network from other communication networks?

    <p>It primarily communicates digital data and instructions.</p> Signup and view all the answers

    Which of the following is NOT a type of communication link in computer networks?

    <p>Personal Digital Assistant</p> Signup and view all the answers

    What is typically required from a server in a Client/Server Network?

    <p>High-end performance to support multiple clients.</p> Signup and view all the answers

    Study Notes

    Communication Networks

    • Composed of interconnected devices capable of communication.
    • Mobile Networks consist primarily of mobile devices.
    • ATM Networks involve communication between ATMs.

    Computer Networks

    • A specific type of communication network allowing computers to exchange digital data.
    • Utilize packet switching to transfer data efficiently.
    • Components include a Source (initiator) and Destination (receiver).
    • A Path is defined by the collection of communication links connecting Source to Destination.
    • Links can be either wired (e.g., Ethernet, Fiber) or wireless (e.g., Wi-Fi, Bluetooth, Satellite).

    Types of Computer Networks

    Based on Architecture

    • Client/Server Network:

      • One server provides resources to multiple clients.
      • The server requires high-capacity hardware to handle various client requests.
      • Offers centralized control, making security management easier.
      • Risk of entire network disruption if the server fails.

    • Peer to Peer Network (P2P):

      • Resources are distributed across multiple devices without a central control.
      • Enhances resource availability; if one device fails, others remain operational.
      • Reduced control can complicate security management.
      • Commonly utilized in file-sharing systems (e.g., torrents, blockchain).

    Based on Coverage Area and Size

    • Local Area Network (LAN):

      • Connects a small number of personal computers within a limited geographic area (e.g., home, lab).

    • Wide Area Network (WAN):

      • Covers expansive geographic areas, linking multiple smaller networks.
      • The Internet serves as the prime example of a WAN.

    Communication Protocols

    • Defined rules for facilitating information transmission between network devices.

    • Protocols vary based on data type being transferred.

    • HTTP / HTTPS:

      • Hyper Text Transfer Protocol (HTTP) enables web page transfer from server to client.
      • HTTPS adds SSL encryption for secure data transmission.

    • FTP / SFTP:

      • FTP facilitates file transfers across networks.
      • SFTP provides a secure method for transferring files between devices.

    • TCP / IP:

      • Transmission Control Protocol (TCP) is crucial for reliable data transfer, working in tandem with Internet Protocol (IP).

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    Quiz Team

    Description

    Explore the fundamentals of communication networks, including mobile and ATM networks. This quiz covers the definition, components, and types of networks used in digital communication. Test your understanding of how different devices interact within these networks.

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