Network Components Overview
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Network Components Overview

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Questions and Answers

Which of the following is NOT one of the three broad categories of network components?

  • Devices
  • Media
  • Protocols (correct)
  • Services

    • End devices are where messages originate from or are received.

    True

    What role does an intermediary device play in a network?

    Interconnects end devices and manages data flow.

    A type of wireless network media uses ______ transmission technology.

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

    Match the following network devices with their functions:

    <p>Switch = Interconnects end devices Router = Forwards data between networks Firewall = Secures the network Access Point = Connects wireless devices to the network</p> Signup and view all the answers

    What type of media is commonly used for high-speed data transfer in networking?

    <p>Fiber optic cables</p> Signup and view all the answers

    A network diagram represents only the end devices in a network.

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

    Name one type of intermediary device used in networking.

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

    Which of the following devices can be used under BYOD policies?

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

    Collaboration is a low priority for businesses.

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

    What is cloud computing primarily used for?

    <p>Storing personal files and applications over the Internet.</p> Signup and view all the answers

    Applications that can be accessed using the Cloud include ______ and photo editing.

    <p>word processing</p> Signup and view all the answers

    What type of cloud is intended for a specific organization such as the government?

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

    Match the following types of clouds with their descriptions:

    <p>Public Cloud = Available to the general public for a fee or for free Private Cloud = Services intended for a specific organization Hybrid Cloud = Combination of public and private clouds Community Cloud = Shared infrastructure for a specific community</p> Signup and view all the answers

    Which of the following is a characteristic of a Local Area Network (LAN)?

    <p>Spans a small geographic area.</p> Signup and view all the answers

    Cloud computing is only available to large enterprises.

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

    Wide Area Networks (WANs) provide high-speed links between LANs.

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

    What is an example of a collaboration tool mentioned?

    <p>Cisco WebEx</p> Signup and view all the answers

    Name one type of network other than LAN or WAN.

    <p>Metropolitan Area Network (MAN), Wireless LAN (WLAN), or Storage Area Network (SAN)</p> Signup and view all the answers

    The Internet is a worldwide collection of interconnected _______ and _______.

    <p>LANs and WANs</p> Signup and view all the answers

    What is usually true about the administration of Wide Area Networks (WANs)?

    <p>Administered by multiple service providers.</p> Signup and view all the answers

    The Internet is owned by a single organization.

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

    What is a characteristic of converged networks?

    <p>They carry multiple services over one link.</p> Signup and view all the answers

    Match the following types of networks with their definitions:

    <p>LAN = Covers a small geographic area WAN = Interconnects LANs over wide geographical areas MAN = Spans a city or large campus WLAN = Wireless connections within a small area</p> Signup and view all the answers

    Fault tolerance in network architecture ensures that a failure affects all devices.

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

    What does QoS stand for in network architecture?

    <p>Quality of Service</p> Signup and view all the answers

    The groups developed to help maintain structure on the Internet include _______, ________, and _______.

    <p>IETF, ICANN, IAB</p> Signup and view all the answers

    Converged networks deliver _____, voice, and video over the same infrastructure.

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

    Match the following network characteristics with their definitions:

    <p>Fault Tolerance = Limits impact of a failure Scalability = Supports growth without performance loss QoS = Ensures consistent service quality Security = Protects against unauthorized access</p> Signup and view all the answers

    Which of the following best describes traditional separate networks?

    <p>They use different technologies for each service.</p> Signup and view all the answers

    Converged networks can only operate if they have dedicated cabling for video services.

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

    Identify one benefit of a fault tolerant network.

    <p>Limits the impact of failures</p> Signup and view all the answers

    Which of the following is NOT considered an external threat?

    <p>Internal user data leaks</p> Signup and view all the answers

    Network security involves only software solutions.

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

    What are two examples of internal threats to network security?

    <p>Accidental data breaches and intentional misuse of data.</p> Signup and view all the answers

    The implementation of security should involve __________ to address various threats.

    <p>multiple layers or multiple solutions</p> Signup and view all the answers

    Match the following types of attacks to their definitions:

    <p>Viruses = Malicious software that replicates itself and spreads to other devices Trojan horses = Malware disguised as legitimate software Denial of Service = An attempt to make a network resource unavailable Zero-day attacks = Exploitation of a previously unknown vulnerability</p> Signup and view all the answers

    What is a primary reason internal users cause the most security breaches?

    <p>BYOD strategies</p> Signup and view all the answers

    What two types of software should be installed on end devices for network security?

    <p>Antivirus and antispyware software.</p> Signup and view all the answers

    Data interception and theft are categorized as internal threats.

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

    What is the primary characteristic of a Local Area Network (LAN)?

    <p>Spans a small geographic area</p> Signup and view all the answers

    Wide Area Networks (WANs) provide high-speed connections between Local Area Networks (LANs).

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

    Name one type of network other than LAN or WAN.

    <p>Metropolitan Area Network (MAN)</p> Signup and view all the answers

    The Internet interconnects multiple ______ and ______.

    <p>LANs, WANs</p> Signup and view all the answers

    Match the following types of networks with their characteristics:

    <p>LAN = Spans a small geographic area WAN = Interconnects multiple LANs over wide areas MAN = Spans a metropolitan area WLAN = Wireless Local Area Network</p> Signup and view all the answers

    Which organization is responsible for maintaining Internet structure?

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

    WANs are usually administered by a single organization.

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

    What type of connections does the Internet primarily use to facilitate its networks?

    <p>Copper wires, fiber optic cables, and wireless transmissions.</p> Signup and view all the answers

    Which of the following is NOT one of the three goals of network security?

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

    Availability in network security refers to the assurance that data will remain confidential.

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

    What does BYOD stand for?

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

    The three main goals of network security are __________, __________, and __________.

    <p>confidentiality, integrity, availability</p> Signup and view all the answers

    Match the following types of network security with their descriptions:

    <p>Network infrastructure security = Preventing unauthorized access to devices Information Security = Protection of data transmitted over the network</p> Signup and view all the answers

    Which trend involves using personal devices in the workplace?

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

    Information security focuses on physical security measures of network devices.

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

    Name one new networking trend that impacts consumers.

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

    What is the purpose of an Intrusion Prevention System (IPS)?

    <p>To identify fast-spreading threats such as zero-day attacks</p> Signup and view all the answers

    Access control lists (ACLs) are used to enhance network security by filtering access.

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

    Name one benefit of using a Virtual Private Network (VPN).

    <p>Secure remote access for users</p> Signup and view all the answers

    Networks need to be __________ to support increased demand and additional devices.

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

    Match the following network requirements with their descriptions:

    <p>Fault tolerance = Ensures network availability despite failures Scalability = Ability to expand with demand Quality of Service (QoS) = Prioritization of traffic for performance Security = Protection against unauthorized access</p> Signup and view all the answers

    What is the primary purpose of an intranet?

    <p>To create a private network accessible only to authorized members</p> Signup and view all the answers

    Which of the following is NOT a requirement for networks mentioned?

    <p>Eco-friendliness</p> Signup and view all the answers

    What is one characteristic that is necessary for networks to support communication?

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

    An extranet is intended for use solely within an organization.

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

    Name one type of broadband connection commonly used by home users.

    <p>Cable or DSL</p> Signup and view all the answers

    Larger networks typically require fewer security measures than smaller networks.

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

    An organization might use an extranet to provide secure access for ______ who work for a different organization.

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

    Match the following Internet connection types with their descriptions:

    <p>Cable = Always on, high bandwidth connection offered by cable television providers DSL = High bandwidth connection that runs over a telephone line Wireless WAN = Allows connectivity without physical cables over long distances Mobile services = Internet access via cellular networks for portable devices</p> Signup and view all the answers

    Which of the following is NOT a business-class interconnection type?

    <p>Fiber optic broadband</p> Signup and view all the answers

    Cable connections provide lower bandwidth compared to DSL.

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

    What type of connection is commonly used for video conferencing in organizations?

    <p>Business-class interconnections such as leased lines or Metro Ethernet</p> Signup and view all the answers

    Which of the following is an example of an external security threat?

    <p>Data interception and theft</p> Signup and view all the answers

    Internal users are the primary cause of network security breaches.

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

    What is one security solution that should be implemented in a home or small office network?

    <p>Firewall filtering</p> Signup and view all the answers

    ____ are malicious programs that can replicate themselves and spread to other systems.

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

    Match the following security threats with their descriptions:

    <p>Viruses = Malicious code that attaches itself to files or programs Hacker attacks = Unauthorized access to systems or data Denial of Service attacks = Overloading a network or service to make it unavailable Zero-day attacks = Exploits of previously unknown vulnerabilities</p> Signup and view all the answers

    What should be implemented on end devices for better network security?

    <p>Antivirus and antispyware software</p> Signup and view all the answers

    All security implementations are effective if only one layer is used.

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

    What does BYOD stand for in terms of network security?

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

    Study Notes

    Network Components Overview

    • Networks can range from simple single cable connections between two computers to complex global interconnections.
    • Network infrastructure consists of three main categories: devices, media, and services.

    End Devices

    • End devices are the starting and ending points for messages.
    • Data originates from an end device, travels through the network, and arrives at another end device.

    Intermediary Network Devices

    • Intermediary devices connect end devices within a network.
    • Examples include switches, wireless access points, routers, and firewalls.
    • Intermediary devices manage data flow by regenerating and retransmitting signals, maintaining network pathway information, and notifying other devices of errors or failures.

    Network Media

    • Network media carries communication across a network.
    • Common media types include:
      • Metallic wires within cables, such as copper
      • Glass, such as fiber optic cables
      • Wireless transmission

    Network Representations

    • Network diagrams, often called topology diagrams, use symbols to represent devices within a network.
    • Important terms to understand:
      • Network Interface Card (NIC)
      • Physical Port
      • Interface

    Topology Diagrams

    • Physical topology diagrams show the physical location of devices.
    • Logical topology diagrams represent ports and network addressing schemes.

    LANs, WANs, and the Internet

    • Two common network types:
      • Local Area Network (LAN) - spans a small geographic area, often within a single building or organization.
      • Wide Area Network (WAN) - spans a large geographic area, often connecting multiple LANs across cities, states, or countries.

    Other Network Types

    • Metropolitan Area Network (MAN) - spans a city or metropolitan area.
    • Wireless LAN (WLAN) - uses wireless media to connect devices.
    • Storage Area Network (SAN) - specialized network for high-speed data storage and access.

    LAN Characteristics

    • Small geographic area, such as a home, school, or office building.
    • Administered by a single individual or organization.
    • High-speed bandwidth for end devices.

    WAN Characteristics

    • Connects LANs over long distances.
    • Administered by multiple service providers.
    • Typically provides slower speeds compared to LANs.

    The Internet

    • Global collection of interconnected LANs and WANs.
    • LANs are connected using WANs, which are then connected using various physical media.
    • Structure and governance:
      • Internet Engineering Task Force (IETF)
      • Internet Corporation for Assigned Names and Numbers (ICANN)
      • Internet Architecture Board (IAB)

    Converged Networks

    • Converged networks carry multiple services (data, voice, video) over a single link.
    • This eliminates the need for dedicated separate networks with different technologies and standards.

    Network Architecture Characteristics

    • Fault Tolerance - reduces the impact of failures by minimizing affected devices.
    • Scalability - ability to expand the network to accommodate additional devices and users.
    • Quality of Service (QoS) - prioritizes different types of traffic to ensure specific applications perform well.
    • Security - protects against unauthorized access, data breaches, and other threats.
    • Bring Your Own Device (BYOD) - allows users to connect personal devices to the network.
    • Online Collaboration - enables individuals to work together on projects over the network.
    • Cloud Computing - provides access to resources (storage, applications) over the Internet.
      • Public Clouds - services available to the general public.
      • Private Clouds - services and applications for a specific organization or entity.

    Network Security

    • Network security is crucial for protecting data and resources.
    • Security solutions must address both internal and external threats.
    • Common security threats:
      • Viruses, worms, Trojan horses
      • Spyware and adware
      • Zero-day attacks
      • Hacker attacks
      • Denial of Service attacks
      • Data interception and theft
      • Identity theft

    Security Solution Components

    • Antivirus and antispyware software on end devices.
    • Firewall filtering to block unauthorized access.
    • Intrusion Detection and Prevention Systems (IDS/IPS) to monitor and prevent attacks.
    • Secure network configurations and protocols.
    • User education and training on security best practices.

    Local Area Network (LAN)

    • Spans a small geographic area
    • Usually administered by a single organization or individual.
    • Provides high-speed bandwidth to end and intermediary devices within the network.

    Wide Area Network (WAN)

    • Interconnects LANs over wide geographical areas
    • Usually administered by multiple service providers.
    • Typically provide slower speed links between LANs.

    The Internet

    • Worldwide collection of interconnected LANs and WANs.
    • LANs are connected to each other using WANs.
    • WANs are then connected to each other using copper wires, fiber optic cables, and wireless transmissions.
    • Not owned by any individual or group.

    Intranets and Extranets

    • Intranets are private collections of LANs and WANs internal to an organization, accessible only to members or authorized individuals.
    • Extranets provide secure access to an organization's network for external individuals who need access to data.

    Internet Access Technologies

    • Popular services for home users and small offices include broadband cable, broadband digital subscriber line (DSL), wireless WANs, and mobile services.
    • Organizations need faster connections to support IP phones, video conferencing, and data center storage.
    • Business-class interconnections are usually provided by service providers (SP) and may include: business DSL, leased lines, and Metro Ethernet.

    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.

    Network Security

    • Two main types:
      • Network infrastructure security: Physical security of network devices, preventing unauthorized access to management software.
      • Information security: Protection of information or data transmitted over the network.

    Three Goals of Network Security

    • Confidentiality: Only intended recipients can read the data.
    • Integrity: Assurance that the data has not been altered during transmission.
    • Availability: Assurance of timely and reliable access to data for authorized users.
    • Bring Your Own Device (BYOD)
    • Online collaboration
    • Video communications
    • Cloud computing

    Network Security Threats

    • External Threats:
      • Viruses, worms, and Trojan horses
      • Spyware and adware
      • Zero-day attacks
      • Hacker attacks
      • Denial of Service attacks
      • Data interception and theft
      • Identify Theft
    • Internal Threats:
      • Intentional or unintentional security breaches by internal users.
      • BYOD strategies increase vulnerability of corporate data.

    Network Security Solutions

    • Antivirus and antispyware software should be installed on end devices.
    • Firewall filtering used to block unauthorized access to the network.
    • Dedicated firewall system: Provides more advanced firewall capabilities.
    • Access control lists (ACL): Used to further filter access and traffic forwarding.
    • Intrusion prevention systems (IPS): Used to identify fast-spreading threats such as zero-day attacks.
    • Virtual private networks (VPN): Used to provide secure access for remote workers.

    Exploring the Network

    • Networks and the Internet have a dramatic impact on our lives.
    • A network can consist of two devices or can be as large as the Internet, consisting of millions of devices.
    • The network infrastructure is the platform that supports the network.
    • Networks must be:
      • Fault-tolerant
      • Scalable
      • Support Quality of Service (QoS)
      • Secure

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    Description

    This quiz covers the basics of network components, including end devices, intermediary devices, and network media. Learn about how these elements work together to facilitate communication across various types of networks. Test your knowledge on key definitions and examples in networking.

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