Wireless Communication Standards Quiz
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Which wireless standard supports data rates up to 1.3 Gb/s?

  • 802.11b
  • 802.11a
  • 802.11n
  • 802.11ac (correct)

    • What is the primary frequency band utilized by Wireless LAN (WLAN) systems?

  • 2.4 GHz and 5.0 GHz (correct)
  • 2.0 GHz
  • 3.5 GHz
  • 1.2 GHz

    • What is a key feature of the 802.11n standard?

  • Requires a single antenna
  • Operates only on 5 GHz
  • Not backward compatible
  • Data rates up to 600 Mb/s (correct)

    • Which of the following standards is not interoperable with 802.11b or 802.11g?

    <p>802.11a</p> Signup and view all the answers

    Which of the following wireless technologies is utilized for device pairing within a short range?

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

    Which type of wireless network supports medium-sized networks up to about 300 feet?

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

    Which frequency bands do 802.11ax devices operate on?

    <p>2.4 and 5 GHz</p> Signup and view all the answers

    What maximum data rate does 802.11b support?

    <p>11 Mb/s</p> Signup and view all the answers

    What is a key characteristic of Bluetooth Low Energy (BLE)?

    <p>Supports mesh topology for large-scale networks</p> Signup and view all the answers

    Which of the following is true about Wireless WAN (WWAN) technology?

    <p>Utilizes specific licensed frequencies for national or global communication</p> Signup and view all the answers

    What is the primary purpose of WANs in the context of internet connectivity?

    <p>To connect multiple LANs together</p> Signup and view all the answers

    Which of the following is NOT a characteristic of star and extended star topologies?

    <p>Requires complex troubleshooting</p> Signup and view all the answers

    In a data link frame, which field is responsible for identifying the encapsulated Layer 3 protocol?

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

    What do Layer 2 addresses primarily facilitate?

    <p>Local delivery of frames on a link</p> Signup and view all the answers

    Which organization is responsible for developing standards for the electronics and computer industries?

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

    Which data link layer protocol is typically associated with wireless LANs?

    <p>802.11 Wireless</p> Signup and view all the answers

    What component of a data link frame indicates the beginning and end of the frame?

    <p>Frame Start and Stop</p> Signup and view all the answers

    Which of the following is a feature of bus topology in LANs?

    <p>All devices are connected in a linear sequence</p> Signup and view all the answers

    What is the primary aim of the IEEE?

    <p>To ensure technological innovation and excellence for the benefit of humanity</p> Signup and view all the answers

    Which part of the data link layer does the IEEE 802 project specifically focus on?

    <p>Logical Link Control and Media Access Control</p> Signup and view all the answers

    What does IEEE 802.11 primarily facilitate?

    <p>Wireless communication in home devices</p> Signup and view all the answers

    Which of the following standards is associated with wired LAN?

    <p>IEEE 802.3</p> Signup and view all the answers

    What type of devices does IEEE 802.3 standards primarily connect?

    <p>Nodes such as routers, switches, and hubs</p> Signup and view all the answers

    Which layer of communication does the IEEE 802 standards primarily operate in?

    <p>Physical layer and data link layer</p> Signup and view all the answers

    What does IEEE 802.3 specify regarding Ethernet?

    <p>Physical media and working characteristics</p> Signup and view all the answers

    What is a key benefit of IEEE 802 standards for computer networks?

    <p>They allow for the integration of various hardware types</p> Signup and view all the answers

    What is the primary role of a server in a network?

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

    Which of the following accurately describes an end device?

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

    What function does an intermediary network device perform?

    <p>Regenerates and retransmits data signals</p> Signup and view all the answers

    What characteristic distinguishes a Local Area Network (LAN) from a Wide Area Network (WAN)?

    <p>LANs operate over a small geographical area.</p> Signup and view all the answers

    Which type of media uses pulses of light for communication?

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

    In a network, what is the primary responsibility of management for intermediary devices?

    <p>Notifying devices of communication errors</p> Signup and view all the answers

    Who typically administers a Wide Area Network (WAN)?

    <p>One or more service providers</p> Signup and view all the answers

    Which of the following is NOT a characteristic of Local Area Networks (LANs)?

    <p>They connect many users from various locations</p> Signup and view all the answers

    Study Notes

    LAN Technologies

    • Course code: CSC 2773
    • Topics covered: LAN technologies, IEEE LAN standards, IEEE 802.11 wireless standards, network components, host roles, end devices, intermediary devices, network media, LANs and WANs, the internet, LAN topologies, Data Link Frame, standards, IEEE standards - 802.11, wired LAN, wireless LAN, benefits of wireless, types of wireless networks, wireless technologies.

    Network Components

    • Every computer on a network is a host or end device.
    • Servers provide information to end devices (e.g., email servers, web servers, file servers).
    • Clients request information from servers (e.g., web page from a web server, email from an email server).

    Host Roles

    • Servers provide information to clients.
    • Clients request information from servers.

    End Devices

    • An end device is where a message originates or is received.
    • Data flows through the network between end devices.

    Intermediary Network Devices

    • Intermediary devices connect end devices (e.g., switches, wireless access points, routers, firewalls).
    • They manage data flow through the network, including: regenerating/retransmitting data signals, maintaining network pathways, notifying devices of errors, and failures.

    Network Media

    • Communication across a network is carried through a medium enabling message travel.
    • Media types include:
      • Copper (metal wires within cables), using electrical impulses.
      • Fiber-optic (glass or plastic fibers within cables), using light pulses.
      • Wireless, using specific frequencies of electromagnetic waves.

    LANs and WANs

    • Network infrastructures vary in size, number of users, available services, and responsibility.
    • LANs are local area networks, covering a small geographical area.
    • WANs are wide area networks, spanning a large geographical area.
    • LANs are interconnected by WANs to form the internet.

    The Internet

    • The internet is a worldwide collection of interconnected LANs and WANs.
    • LANs are connected using WANs.
    • WANs use copper wires, fiber optic cables, and wireless transmissions.
    • Groups maintain the internet's structure (e.g., IETF, ICANN, IAB).

    LAN Topologies

    • End devices in LANs are usually interconnected via star or extended star topologies.
    • Other topologies include:
      • Bus topology
      • Ring topology
    • Data is encapsulated by the data link layer using a header and trailer to form a frame.
    • A data link frame comprises a header, data, and trailer.
    • Fields in the header and trailer vary by protocol.
    • Control information in the frame depends on access control and logical topology.

    Frame Fields

    • Frame start and stop identifiers.
    • Addressing fields for source and destination nodes.
    • Type fields that specify encapsulated protocols.
    • Control fields indicating flow control services.
    • Data fields containing the frame payload
    • Error detection fields

    Layer 2 Addresses

    • Layer 2 addresses, also physical addresses, are contained in the frame header.
    • They're used for local delivery on the link.
    • Addresses are updated by devices forwarding frames.

    LAN and WAN Frames

    • The logical topology and media determine the data link protocol used (Ethernet, 802.11 Wireless, Point-to-Point, HDLC, Frame-Relay).

    IEEE

    • IEEE (Institute of Electrical and Electronics Engineers) develops standards for electronics and computers.
    • Composed of scientists, engineers, and students globally.
    • Aims to promote technological innovation.

    IEEE Standards

    • IEEE standards ensure communication between devices.
    • The internet and related technologies adhere to guidelines.
    • Computer society project 802 (1985) enabled standard communication across various devices.

    IEEE Standards 802.11

    • Standard for wireless networks (e.g., laptops, printers, smartphones).

    Wired LAN

    • 802.3 or IEEE 802.3 standard specifications for Ethernet (a packet-based method of physical communication in a local area network).
    • Defines physical and data-link layers for media access control.

    802.3 Standards (evolution)

    • Key wired Ethernet standards, including the speeds and typical cabling used.
    • Historical standards and their corresponding speeds and cable types.

    Wireless LAN

    • WLAN (Wireless LAN) is a type of wireless network commonly used in various environments.
    • Enables mobility within homes and businesses.

    Benefits of Wireless

    • Mobility in home and business environments.
    • Adaptation to changing needs and technology.

    Types of Wireless Networks

    • WPAN (Wireless Personal Area Network)
    • WLAN (Wireless Local Area Network)
    • WMAN (Wireless Metropolitan Area Network)
    • WWAN (Wireless Wide Area Network)

    Wireless Technologies

    • Bluetooth: Device pairing (up to 300ft), supporting mesh and point-to-point topologies.
    • WiMAX (Worldwide Interoperability for Microwave Access): Broadband alternative, up to 30 miles.
    • Cellular Broadband: Voice and data communication, used by various devices.
    • Satellite Broadband: Long-range communication, used in rural areas with limited cable access.

    802.11 WLAN Standards

    • Standards for wireless communication using different radio frequencies, ranging from 2.4 GHz and 5 GHz.
    • Different standards (e.g., 802.11b, 802.11a, etc.) with specific data rate details.

    Radio Frequencies

    • Wireless devices operate using radio frequencies.
    • IEEE standards detailed the use of 2.4 GHz and 5 GHz frequencies for WLAN networks.

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    Related Documents

    CSC 2773 LAN Technologies PDF

    Description

    Test your knowledge on wireless communication standards, including WLAN and WWAN technologies. This quiz covers topics related to data rates, frequency bands, and network topologies. Perfect for students and professionals looking to enhance their understanding of modern wireless networks.

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