Switched WAN and Internetworking
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Questions and Answers

What is an internetwork?

  • A single network that operates in isolation.
  • A type of communication specific to WANs only.
  • A network that connects only LANs together.
  • A connection of two or more networks that can communicate with each other. (correct)

    • What is the primary function of a switched WAN?

  • To provide personal connection to a single device.
  • To connect multiple isolated networks.
  • To serve as the backbone for global communication. (correct)
  • To exclusively handle LAN data traffic.

    • What does the term 'Internet' (with an uppercase I) refer to?

  • A local area network.
  • A type of switched WAN.
  • Two or more networks communicating with each other.
  • The vast network of interconnected networks globally. (correct)

    • How must a user connect to the Internet?

    <p>Through an ISP using a point-to-point WAN.</p> Signup and view all the answers

    How has the Internet impacted daily life according to the information given?

    <p>It has revolutionized business practices and leisure activities.</p> Signup and view all the answers

    What is the relationship between LANs and WANs in the context of an internetwork?

    <p>Both LANs and WANs can be interconnected to form an internetwork.</p> Signup and view all the answers

    Which statement is accurate regarding switched WANs?

    <p>They facilitate the backbone of global communication, as seen today.</p> Signup and view all the answers

    What is a defining characteristic of the Internet?

    <p>It allows for communication and interconnectivity across millions of networks.</p> Signup and view all the answers

    What defines the topology of a network?

    <p>The geometric representation of links and nodes</p> Signup and view all the answers

    Which of the following is NOT one of the basic network topologies?

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

    Which statement describes a Local Area Network (LAN)?

    <p>Connects hosts in a single office or campus</p> Signup and view all the answers

    What is a defining characteristic of a Wide Area Network (WAN)?

    <p>Spans significant geographical distances</p> Signup and view all the answers

    Which type of WAN connects only two devices?

    <p>Point-to-Point WAN</p> Signup and view all the answers

    What does transit time measure in a network?

    <p>The time required for a message to travel between devices</p> Signup and view all the answers

    Which of the following factors does NOT contribute to assessing network reliability?

    <p>Speed of message transmission</p> Signup and view all the answers

    What is a characteristic of a point-to-point connection?

    <p>It provides a dedicated link between two devices</p> Signup and view all the answers

    Which type of connection allows multiple devices to share a single link?

    <p>Multipoint connection</p> Signup and view all the answers

    In a multipoint connection, what does a spatially shared connection mean?

    <p>Several devices can use the link at the same time</p> Signup and view all the answers

    What does network security primarily focus on?

    <p>Protecting data from unauthorized access and damage</p> Signup and view all the answers

    What is the meaning of response time in networking?

    <p>The elapsed time between an inquiry and a reply</p> Signup and view all the answers

    Which of the following statements about physical topology is true?

    <p>It describes the way devices are connected in reality</p> Signup and view all the answers

    Which of the following does NOT define a multipoint connection?

    <p>Capacity is reserved for just one connection</p> Signup and view all the answers

    How is network reliability measured?

    <p>By the frequency of failure and recovery speed</p> Signup and view all the answers

    Which of the following is NOT one of the four characteristics that data communication depends on?

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

    What is the role of a protocol in data communication?

    <p>To provide a set of rules for communication</p> Signup and view all the answers

    What coding system is mentioned as the prevalent method for representing text symbols?

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

    How is a number represented in a format such as ASCII for communication purposes?

    <p>Directly as a binary number</p> Signup and view all the answers

    What does a pixel represent in the context of image communication?

    <p>A small dot in an image</p> Signup and view all the answers

    Which of the following is NOT one of the five components of data communication?

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

    In data communication, what aspect does 'timeliness' refer to?

    <p>Speed of data transmission</p> Signup and view all the answers

    What does the term 'medium of communication' refer to in data communications?

    <p>The channel through which data is transmitted</p> Signup and view all the answers

    Which component of data communication is responsible for initiating the transmission?

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

    Which form of data representation does NOT involve a code for symbols?

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

    What representation provides better image quality?

    <p>Dividing an image into 10,000 pixels</p> Signup and view all the answers

    How is audio primarily represented?

    <p>As analog or digital signals</p> Signup and view all the answers

    Which is a characteristic of simplex communication?

    <p>Only one device can send or receive at a time</p> Signup and view all the answers

    What does full-duplex communication allow?

    <p>Both devices can send and receive simultaneously</p> Signup and view all the answers

    Which of the following is NOT a device in the definition of a network?

    <p>Ethernet cable</p> Signup and view all the answers

    Which criteria is considered most important for a network?

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

    Which type of image representation is NOT mentioned?

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

    What is an example of a connecting device in a network?

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

    Which of the following describes a characteristic of half-duplex communication?

    <p>Devices can send and receive alternately, but not simultaneously</p> Signup and view all the answers

    Which aspect is NOT a measure of network performance?

    <p>User satisfaction</p> Signup and view all the answers

    Study Notes

    Switched WANs

    • Switched WANs form the backbone of global communication networks today, enabling robust data transmission.

    Internetworks

    • An internetwork, or "internet," consists of multiple connected networks, allowing them to communicate and share resources.

    The Internet

    • The Internet, comprising millions of interconnected networks, serves as the most prominent example of an internetwork.

    Accessing the Internet

    • Users gain access to the Internet through a local Internet Service Provider (ISP) via physical connections typically using point-to-point WANs.

    Impact of the Internet

    • The Internet has significantly transformed daily life, influencing business operations and leisure activities by providing instant access to information.

    Data Communications

    • Data communication is the exchange of information between devices over transmission media involving four key characteristics: delivery, accuracy, timeliness, and jitter.

    Components of Data Communication

    • Essential components include the sender, receiver, message, communication medium, and protocols governing interaction.

    Message Types

    • Information shared can be in various forms: text, numbers, images, audio, and video, each represented through specific coding systems.

    Data Flow Modes

    • Data flow can be classified as:
      • Simplex: One-way communication.
      • Half-Duplex: Two-way communication, not simultaneous.
      • Full-Duplex: Simultaneous two-way communication.

    Networks

    • Networks connect devices (hosts and connecting devices) to enable communication and can vary in structure and function.

    Network Criteria

    • Essential criteria for effective networks include performance (measured by transit and response times), reliability (frequency of failure and recovery time), and security (protection against unauthorized access and data loss).

    Connection Types

    • Two main types of connections in networks:
      • Point-to-Point: A dedicated link between two devices, ensuring full capacity for that connection.
      • Multipoint: Multiple devices sharing a single communication link, either spatially or temporally.

    Physical Topologies

    • Physical topology refers to the arrangement of links in a network. Common types include:
      • Mesh: Every device connected to every other device.
      • Star: All devices connect to a central hub.
      • Bus: All devices share a single communication line.
      • Ring: Each device connects to two others, forming a circular pathway.

    Network Types

    • Types of networks include:
      • Local Area Network (LAN): Privately owned, typically within a single office or campus.
      • Wide Area Network (WAN): Covers larger geographical areas, from towns to worldwide connections.

    Point-to-Point and Switched WANs

    • Point-to-Point WAN: Direct connection between two devices using various mediums like cable or air.
    • Switched WAN: Involves multiple endpoints and uses switches to manage data traffic effectively.

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    Quiz Team

    Description

    This quiz explores the concept of switched WANs and their role in global communication networks. It discusses how local area networks (LANs) and wide area networks (WANs) interconnect to form an internetwork, highlighting the complexities and functionalities involved. Engage with questions that test your knowledge on these networking fundamentals.

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