Cisco Network Components Overview
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Questions and Answers

Which of the following is NOT considered an intermediary network device?

  • Router
  • Computer (correct)
  • Firewall
  • Switch

    • An end device is where a message originates, and it only exists at the receiving end.

    False

    What are the three broad categories of network components?

    Devices, Media, Services

    Communication across a network is carried through a medium such as __________, fiber optic cables, and wireless transmission.

    <p>metallic wires</p> Signup and view all the answers

    Match the following network components with their descriptions:

    <p>Router = Intermediary device that directs data packets Switch = Connects multiple devices within a network Wireless access point = Allows devices to connect wirelessly Firewall = Secures the network by filtering incoming and outgoing traffic</p> Signup and view all the answers

    What is the primary advantage of a packet switched network?

    <p>Allows each packet to take different paths</p> Signup and view all the answers

    Circuit-switched networks can achieve fault tolerance by allowing multiple paths for data.

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

    What does QoS stand for, and why is it important?

    <p>Quality of Service; it is important for ensuring reliable delivery of content for services like voice and video.</p> Signup and view all the answers

    A scalable network can expand quickly to support new users and applications without affecting the performance of existing _____.

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

    Match the following aspects of networking with their descriptions:

    <p>Fault Tolerance = Multiple paths for reliability Scalability = Support for new users without performance loss Quality of Service (QoS) = Management of data traffic flow Packet Switching = Traffic split into packets for routing</p> Signup and view all the answers

    What does BYOD stand for?

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

    Collaboration tools such as Cisco WebEx are mainly used for personal communication.

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

    Name one application that can be accessed using cloud computing.

    <p>Word processing or photo editing</p> Signup and view all the answers

    Cloud computing allows businesses to extend their capabilities on _______ and is delivered automatically to any device.

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

    Which of the following devices can be used under BYOD?

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

    Private clouds are intended for the general public to access.

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

    Applications and services in a public cloud are available through a ________ model.

    <p>pay-per-use</p> Signup and view all the answers

    Match the following cloud types with their descriptions:

    <p>Public Clouds = Services for the general public Private Clouds = Services for a specific organization Hybrid Clouds = Combination of public and private services</p> Signup and view all the answers

    What is one advantage of cloud computing for smaller companies?

    <p>Leasing server and storage services instead of maintaining their own data centers.</p> Signup and view all the answers

    What is a major priority for businesses and educational institutions?

    <p>Online collaboration</p> Signup and view all the answers

    Study Notes

    Overview of Network Components

    • A network can range from a simple connection between two computers to a complex global network.
    • Network infrastructure includes three main components: devices, media, and services.

    End Devices

    • End devices are the sources or destinations of messages in a network.
    • Data flows from one end device through the network and arrives at another end device.

    Intermediary Network Devices

    • Intermediary devices connect end devices and include switches, routers, wireless access points, and firewalls.
    • Their roles include regenerating and retransmitting signals, managing network pathways, and notifying devices of errors.

    Network Media

    • Communication happens through various media enabling message transfer from source to destination.
    • Common media types include metallic cables (copper), fiber optic cables (glass), and wireless transmission.

    Network Representations

    • Network diagrams, or topology diagrams, visualize networks and devices.
    • Important components in diagrams include Network Interface Card (NIC), physical ports, and interfaces.

    Topology Diagrams

    • Topology diagrams illustrate the physical layout and connections between devices.
    • Redundancy is crucial for fault tolerance; multiple paths enhance reliability in packet-switched networks.

    Reliable Network Scalability

    • A scalable network allows for quick expansion to accommodate new users and applications without degrading performance.
    • Standards and protocols help ensure networks can scale effectively.

    Quality of Service (QoS)

    • QoS is essential for managing voice and video traffic, ensuring reliable content delivery.
    • Without sufficient bandwidth or QoS configuration, users may experience interruptions during live transmissions.
    • Collaboration tools like Cisco WebEx facilitate real-time interactions for joint projects.
    • Online collaboration is increasingly prioritized in business and education.
    • Cloud computing enables users to store personal data and access applications via the Internet.
    • It allows businesses to scale on demand, utilizing remote data centers for better resource management.

    Types of Clouds

    • Public Clouds offer services to the general public on a pay-per-use basis.
    • Private Clouds provide applications and services for specific organizations, enhancing security and control.

    Network Security: Security Threats

    • Security is vital for all network sizes, addressing both external threats (viruses, hacker attacks, data theft) and internal user risks (unintentional breaches, BYOD vulnerabilities).

    Network Security: Security Solutions

    • Security measures should be layered, incorporating multiple solutions. Basic protections for small networks include antivirus software and firewalls.
    • Larger networks require advanced measures like dedicated firewalls, access control lists (ACL), intrusion prevention systems (IPS), and virtual private networks (VPN).

    Conclusion: Exploring the Network

    • Networks and the Internet significantly influence daily life, accommodating various scales from small two-device connections to vast systems like the Internet.
    • Key network characteristics include fault tolerance, scalability, quality of service support, and security measures.

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    Description

    Explore the essential components of network infrastructure, including devices, media, and services. This quiz will test your understanding of both simple and complex network setups, from LANs to WANs and internet connectivity.

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