Sem 2 Networking Programming Week 1 Networking Today
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Questions and Answers

What is a computer on a network called?

  • Switch
  • Host or end device (correct)
  • Router
  • Bridge

    • What type of server runs email server software?

  • File server
  • Email server (correct)
  • FTP server
  • Web server

    • What is a characteristic of a peer-to-peer network?

  • Easy to set up (correct)
  • Centralized administration
  • Highly secure
  • Highly scalable

    • What is the primary role of an intermediary network device?

    <p>Regenerate and retransmit data signals</p> Signup and view all the answers

    What type of network is used for simple tasks such as transferring files and sharing printers?

    <p>Peer-to-peer network</p> Signup and view all the answers

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

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

    What is an end device?

    <p>A device that originates or receives messages</p> Signup and view all the answers

    What is a characteristic of a server?

    <p>It provides information to end devices</p> Signup and view all the answers

    What is a characteristic of Custom Clouds?

    <p>They are built to meet the needs of a specific industry</p> Signup and view all the answers

    What is the purpose of Powerline Networking?

    <p>To allow devices to connect to a LAN where wireless access points cannot reach</p> Signup and view all the answers

    What is a common environment where Wireless Broadband is often found?

    <p>Rural environments</p> Signup and view all the answers

    What is a key aspect of Network Security?

    <p>Taking into account the environment while securing data</p> Signup and view all the answers

    What technology is used by Wireless Internet Service Providers (WISPs)?

    <p>Cellular technology</p> Signup and view all the answers

    What is the purpose of an antenna in Wireless Broadband?

    <p>To provide wireless connectivity</p> Signup and view all the answers

    What is a characteristic of Converged Networks?

    <p>Each part remains a distinctive object, but both are connected using the same architecture</p> Signup and view all the answers

    What is a key aspect of securing a network?

    <p>Securing data and mitigating threats</p> Signup and view all the answers

    What is the primary focus of Network Infrastructure Security?

    <p>Preventing unauthorized access to network devices</p> Signup and view all the answers

    Which of the following is a goal of Network Security?

    <p>Ensuring confidentiality of data</p> Signup and view all the answers

    What is the primary benefit of Cloud Computing for businesses?

    <p>Reduced network infrastructure costs</p> Signup and view all the answers

    What is the main difference between Public Clouds and Private Clouds?

    <p>Availability to the public</p> Signup and view all the answers

    What is the term for using personal devices to access a network?

    <p>Bring Your Own Device (BYOD)</p> Signup and view all the answers

    What is the primary purpose of Video Communications?

    <p>Communicating with others over a network</p> Signup and view all the answers

    What is the term for a network that combines multiple types of Clouds?

    <p>Hybrid Cloud</p> Signup and view all the answers

    What is the primary benefit of Online Collaboration?

    <p>Collaboration with others on joint projects</p> Signup and view all the answers

    What is the primary purpose of an Extranet?

    <p>To provide secure access to a company's network for individuals who work for a different organization</p> Signup and view all the answers

    What is a disadvantage of using a Dial-up Telephone internet connection?

    <p>It is a low bandwidth option</p> Signup and view all the answers

    What is a characteristic of Business-class interconnections?

    <p>They are provided by the internet service providers (SPs)</p> Signup and view all the answers

    What is a characteristic of a Cable internet connection?

    <p>It is a high bandwidth, always on internet offered by cable television service providers</p> Signup and view all the answers

    Which of the following organizations is responsible for Internet Governance?

    <p>All of the above</p> Signup and view all the answers

    What is the primary purpose of an Intranet?

    <p>To provide a private collection of LANs and WANs internal to an organization</p> Signup and view all the answers

    What is a characteristic of Satellite internet connection?

    <p>It is a major benefit to rural areas without Internet Service Providers (ISPs)</p> Signup and view all the answers

    What is a characteristic of Business Internet Connections?

    <p>They are faster connections to support IP phones, video conferencing and data center storage</p> Signup and view all the answers

    What type of network design is recommended for very small networks?

    <p>Peer-to-peer network</p> Signup and view all the answers

    What is the primary role of a server?

    <p>To provide information to other devices</p> Signup and view all the answers

    What is the primary function of an intermediary network device?

    <p>To manage data flow through the network</p> Signup and view all the answers

    What is an end device in a network?

    <p>A device that receives information from other devices</p> Signup and view all the answers

    What is a characteristic of a file server?

    <p>Stores and provides access to files</p> Signup and view all the answers

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

    <p>Not scalable</p> Signup and view all the answers

    What is a characteristic of a web server?

    <p>Provides access to web pages</p> Signup and view all the answers

    What is an advantage of a peer-to-peer network?

    <p>Easy to set up</p> Signup and view all the answers

    What is the primary characteristic of a Small Office/Home Office network?

    <p>Enables computers within a home or remote office to connect to a corporate network</p> Signup and view all the answers

    What is the key difference between a LAN and a WAN?

    <p>The size of the area covered</p> Signup and view all the answers

    What is the Internet composed of?

    <p>A collection of interconnected LANs and WANs</p> Signup and view all the answers

    What is a characteristic of Medium to Large Networks?

    <p>They have hundreds or thousands of interconnected computers</p> Signup and view all the answers

    What is the primary role of WANs in the Internet?

    <p>To interconnect LANs over wide geographical areas</p> Signup and view all the answers

    What is a characteristic of the Internet?

    <p>It is a worldwide collection of interconnected LANs and WANs</p> Signup and view all the answers

    What is the role of service providers in WANs?

    <p>To typically administer WANs</p> Signup and view all the answers

    What is the main difference between a LAN and a WAN in terms of administration?

    <p>The organization responsible for administration</p> Signup and view all the answers

    What is a characteristic of a dedicated leased line?

    <p>It is a reserved circuit within the service provider's network.</p> Signup and view all the answers

    What is the primary benefit of converged networks?

    <p>They can deliver data, voice, and video over the same network infrastructure.</p> Signup and view all the answers

    What is a key characteristic of a fault-tolerant network?

    <p>It limits the impact of a failure by limiting the number of affected devices.</p> Signup and view all the answers

    What is a characteristic of business DSL?

    <p>It is available in various formats, including Symmetric Digital Subscriber Lines (SDSL).</p> Signup and view all the answers

    What is a key aspect of network architecture?

    <p>It refers to the technologies that support the infrastructure that moves data across the network.</p> Signup and view all the answers

    What is a characteristic of satellite internet connections?

    <p>It provides a connection when a wired solution is not available.</p> Signup and view all the answers

    What is a key characteristic of reliable networks?

    <p>They are designed to meet user expectations for fault tolerance, scalability, quality of service, and security.</p> Signup and view all the answers

    What is a characteristic of Ethernet WAN?

    <p>It extends LAN access technology into the WAN.</p> Signup and view all the answers

    What is a key advantage of using Powerline Networking in a home?

    <p>It allows devices to connect to a LAN without data network cables</p> Signup and view all the answers

    What type of internet connection is often used in rural environments?

    <p>Wireless Broadband</p> Signup and view all the answers

    What is a key consideration when implementing Network Security?

    <p>Environment and quality of service</p> Signup and view all the answers

    What is a characteristic of Custom Clouds?

    <p>They are built for a specific industry</p> Signup and view all the answers

    What is the primary role of an antenna in Wireless Broadband?

    <p>To provide wireless or wired connectivity for devices at home</p> Signup and view all the answers

    What is a common technology used in smart home devices?

    <p>Wi-Fi</p> Signup and view all the answers

    What is a key aspect of Network Security?

    <p>Mitigating threats and securing data</p> Signup and view all the answers

    What is a characteristic of convergence in networks?

    <p>Each part remains a distinctive object, but both are connected using the same architecture</p> Signup and view all the answers

    Study Notes

    Host Roles

    • A computer on a network is called a host or end device.

    Servers

    • A server is a computer that provides information to end devices.
    • Types of servers:
      • Email servers: run email server software, and clients use client software to access email.
      • Web servers: run web server software, and clients use browser software to access web pages.
      • File servers: store corporate and user files, and clients access these files.

    Peer to Peer

    • A peer-to-peer network is where a device can be both a client and a server.
    • Advantages:
      • Easy to set up
      • Less complex
      • Lower cost
    • Disadvantages:
      • No centralized administration
      • Not as secure
      • Not as scalable
      • Slower performance

    End Devices

    • End devices are where a message originates from or is received.
    • Data originates with an end device, flows through the network, and arrives at an end device.

    Intermediary Network Devices

    • Intermediary devices interconnect end devices and manage data flow.
    • Roles:
      • Regenerate and retransmit data signals
      • Maintain information about network pathways
      • Notify other devices of errors and communication failures
    • Smart home technologies, such as Amazon Echo Hub and Google Nest, are becoming popular.
    • Powerline networking allows devices to connect to a LAN where data network cables or wireless communications are not viable.

    Wireless Broadband

    • Wireless broadband is commonly found in rural environments.
    • It uses the same cellular technology as a smartphone.
    • An antenna is installed outside the house to provide wireless or wired connectivity.

    Network Security

    • Network security is essential to protect data and mitigate threats.
    • Two types of network security:
      • Network infrastructure security: physical security and preventing unauthorized access to devices.
      • Information security: protecting data transmitted over the network.
    • Three goals of network security:
      • Confidentiality: ensuring only intended recipients can read data.
      • Integrity: ensuring data is not altered during transmission.
      • Availability: ensuring timely and reliable access to data for authorized users.
    • Recent trends:
      • BYOD (Bring Your Own Device): using any device, anywhere, for any ownership.
      • Online collaboration: working with others over the network on joint projects.
      • Video communications: a powerful tool for communicating with others.
      • Cloud computing: storing personal files or backup data on servers over the internet.
    • Cloud computing types:
      • Public Clouds: available to the general public through a pay-per-use model or free.
      • Private Clouds: intended for a specific organization or entity.
      • Hybrid Clouds: made up of two or more cloud types.

    Internet Organizations

    • IETF, ICANN, and IAB are organizations that play a crucial role in the development and maintenance of the internet.

    Intranets and Extranets

    • An intranet is a private collection of LANs and WANs internal to an organization, accessible only to authorized individuals.
    • An extranet provides secure access to an organization's network for individuals who work for a different organization and need access to their data.

    Internet Connections

    • There are various ways to connect users and organizations to the internet, including broadband cable, DSL, wireless WANs, and mobile services.
    • Organizations require faster connections to support IP phones, video conferencing, and data center storage.
    • Business-class interconnections are provided by service providers (SP) and may include business DSL, leased lines, and Metro Ethernet.

    Home and Small Office Internet Connections

    • Cable: high-bandwidth, always-on internet connection offered by cable television service providers.
    • DSL: high-bandwidth, always-on internet connection that runs over a telephone line.
    • Cellular: uses a cellphone network to connect to the internet.
    • Satellite: provides internet access in rural areas where other connections are not available.
    • Dial-up: an inexpensive, low-bandwidth option using a modem.

    Business Internet Connections

    • Dedicated Leased Line: a reserved circuit within the service provider's network that connects distant offices with private voice and/or data networking.
    • Ethernet WAN: extends LAN access technology into the WAN.
    • DSL: business DSL is available in various formats, including Symmetric Digital Subscriber Lines (SDSL).
    • Satellite: provides a connection when a wired solution is not available.

    The Converging Network

    • Converged networks carry multiple services (data, voice, and video) on one link, using the same set of rules and standards.
    • Converged networks can deliver data, voice, and video over the same network infrastructure.

    Network Architecture

    • Network architecture refers to the technologies that support the infrastructure that moves data across the network.
    • Four basic characteristics that the underlying architectures need to address to meet user expectations are:
      • Fault Tolerance
      • Scalability
      • Quality of Service (QoS)
      • Security

    Fault Tolerance

    • A fault-tolerant network limits the impact of a failure by limiting the number of affected devices.

    Common Types of Networks

    • Small Home Networks: connect a few computers to each other and the internet.
    • Small Office / Home Office: enables computers within a home or remote office to connect to a corporate network.
    • Medium to Large Networks: many locations with hundreds or thousands of interconnected computers.
    • World Wide Networks: connects hundreds of millions of computers worldwide, such as the internet.

    LANs and WANs

    • LANs (Local Area Networks) interconnect end devices in a limited area.
    • WANs (Wide Area Networks) interconnect LANs over wide geographical areas.
    • LANs are administered by a single organization or individual, while WANs are typically administered by one or more service providers.

    The Internet

    • The internet is a worldwide collection of interconnected LANs and WANs.
    • It is not owned by any individual or group, but rather developed by a group to help maintain structure on the internet.
    • Smart home technologies like Amazon Echo Hub, Google Nest, and others are becoming increasingly popular.

    Powerline Networking

    • Powerline networking allows devices to connect to a LAN in areas where data network cables or wireless communications are not viable.

    Wireless Broadband

    • Wireless broadband is commonly found in rural environments, using the same cellular technology as smartphones.
    • It provides wireless or wired connectivity for devices at home.

    Network Security

    • Network security is an integral part of networking, regardless of the size of the network.
    • Securing a network involves many protocols, technologies, devices, tools, and techniques to secure data and mitigate threats.

    Networking Programming

    Host Roles

    • A computer on a network is called a host or end device.

    Servers

    • Servers are computers that provide information to end devices, such as email servers, web servers, and file servers.

    Peer to Peer

    • A peer-to-peer network allows devices to act as both clients and servers.
    • This type of network design is only recommended for very small networks.

    End Devices

    • End devices are where a message originates from or where it is received.
    • Data originates with an end device, flows through the network, and arrives at an end device.

    Intermediary Network Devices

    • Intermediary devices interconnect end devices and manage data as it flows through the network.
    • They also regenerate and retransmit data signals, maintain information about network pathways, and notify other devices of errors and communication failures.

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    Description

    Learn about hosts, end devices, and server types in computer networking, including email, web, and file servers. Understand their roles and how clients access them.

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