Introduction to Networks Module 1
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Questions and Answers

What is the primary medium used for communication across a network that employs electrical impulses?

  • Fiber-optic cables
  • Radiowave frequencies
  • Metal wires within cables (correct)
  • Wireless transmission

    • Which type of diagram represents the physical location of intermediary devices and cable installations within a network?

  • Communication layout diagram
  • Network interface diagram
  • Physical topology diagram (correct)
  • Logical topology diagram

    • What is the primary characteristic of wireless transmission in networking?

  • Requires direct physical connections
  • Uses electrical impulses over metal
  • Relies on light pulses for data transfer
  • Utilizes modulation of specific frequencies (correct)

    • In network terminology, which terms are often used interchangeably?

    <p>Port and Interface</p> Signup and view all the answers

    What do logical topology diagrams primarily illustrate?

    <p>Devices, ports, and addressing scheme</p> Signup and view all the answers

    What defines a server in a network?

    <p>A device that provides information to end devices.</p> Signup and view all the answers

    What is a significant disadvantage of a peer-to-peer network?

    <p>It lacks a centralized administration.</p> Signup and view all the answers

    Which device does NOT serve as an intermediary in a network?

    <p>File Server</p> Signup and view all the answers

    In the context of network communication, what is an end device?

    <p>A device where messages originate or are received.</p> Signup and view all the answers

    What is a primary role of intermediary devices in a network?

    <p>To regenerate and retransmit data signals.</p> Signup and view all the answers

    What characteristic makes peer-to-peer networks less secure?

    <p>Decentralized structure lacking control and oversight.</p> Signup and view all the answers

    Why might a peer-to-peer network be considered cost-effective?

    <p>Involves no need for dedicated servers and management.</p> Signup and view all the answers

    Which of the following describes a client in a network?

    <p>A device that requests and uses resources from servers.</p> Signup and view all the answers

    What is the primary characteristic that distinguishes a Local Area Network (LAN) from a Wide Area Network (WAN)?

    <p>LANs interconnect end devices over limited areas.</p> Signup and view all the answers

    Which type of network typically offers higher speed bandwidth?

    <p>Local Area Network (LAN)</p> Signup and view all the answers

    What is a common characteristic of both LANs and WANs?

    <p>Both types of networks can interconnect with each other.</p> Signup and view all the answers

    Which of the following is an example of a small network type?

    <p>Small Home Networks</p> Signup and view all the answers

    What is the role of a Wide Area Network (WAN)?

    <p>To connect various LANs over a wide geographical area.</p> Signup and view all the answers

    What typically characterizes the Internet?

    <p>It consists of interconnected LANs and WANs.</p> Signup and view all the answers

    Which of the following is NOT a characteristic of a Local Area Network (LAN)?

    <p>Covers wide geographical areas.</p> Signup and view all the answers

    Which medium can be used by WANs for connectivity?

    <p>Copper wires and wireless transmissions</p> Signup and view all the answers

    Study Notes

    Module 1: Networking Today

    • This module introduces networking concepts.
    • The material is part of the Introduction to Networks v7.0 (ITN) course.

    1.2 Network Components

    • This section discusses the components of a network.

    Network Components: Host Roles

    • A host or end device is any computer on a network.
    • Servers provide information to end devices.
      • Email servers provide email services.
      • Web servers host websites.
      • File servers store files.
    • Clients request information from servers.
      • Clients use software to access services (like email clients, web browsers).

    1.2.1 Peer-to-Peer Networks

    • In peer-to-peer networks, devices can act as both clients and servers.
    • Advantages: Easy setup, less complex, lower cost, suitable for simple tasks (file sharing, printer sharing).
    • Disadvantages: No centralized administration, less secure, not scalable, slower performance.
      • This type is only recommended for small networks.

    Network Components: End Devices

    • End devices are where data originates or is received.
    • Data flows through the network from one end device to another.
    • LAN (Local Area Network) connects the devices physically.

    Network Components: Intermediary Network Devices

    • These devices connect end devices and manage data flow.
    • Examples: Switches, wireless access points, routers, and firewalls.
    • Functions include:
      • Regenerating and retransmitting data signals.
      • Maintaining information about network pathways.
      • Notifying other devices about errors or communication issues.
      • Devices like multiplexers and firewalls are also included

    Network Components: Network Media

    • Data transmission across a network uses a medium.
    • Types of media:
      • Copper wires (electrical impulses).
      • Fiber optic cables (light pulses).
      • Wireless transmission (electromagnetic waves).

    1.3 Network Representations and Topologies

    • Network diagrams (topologies) use symbols to represent network devices.
    • Essential terms: Network Interface Card (NIC), Physical Port, and Interface. (often used interchangeably)

    1.3.1 Topology Diagrams

    • Physical topologies display physical device placement and cabling.
    • Logical topologies show device connections, ports, and addressing schemes.

    1.4 Common Types of Networks

    • Networks vary in size and scope.
    • Types of Networks:
      • Small Home Networks: Connect a few computers.
      • SOHO (Small Office/Home Office): Extend home networks to small offices.
      • Medium/Large Networks: Connect hundreds or thousands of computers.
      • Wide Area Networks (WANs): Connect geographically dispersed computers. (often administered by multiple service providers)

    1.4.1 LANs and WANs

    • LANs (Local Area Networks) cover a smaller geographical area and are often administered by a single organization.
    • WANs (Wide Area Networks) span larger areas and connect multiple LANs. WANs often use different service providers and typically have slower speeds between LANs.

    1.4.2 The Internet

    • The internet is a worldwide collection of interconnected LANs and WANs.
    • LANs are connected through WANs using various communication methods like copper wires, fiber optics, and wireless connections.
    • The internet isn't owned by a single entity but rather governed by organizations (IETF, ICANN, IAB) coordinating its structure.

    Intranets and Extranets

    • Intranets are private networks accessible only to authorized members of an organization.
    • Extranets extend an organization's network to connect with other organizations or individuals.

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    Related Documents

    Cisco Networking Module 1: Networking Today PDF

    Description

    Explore the essential concepts of networking in Module 1 of the Introduction to Networks v7.0 course. This module covers network components, host roles, and the functionality of peer-to-peer networks, providing a foundational understanding of how devices communicate and share resources.

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