Wireless Networks Overview Quiz
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Questions and Answers

A Wireless Personal-Area Network (WPAN) operates over a range of ______ to ______ feet.

20, 30

Wireless LAN (WLAN) networks can reach distances of up to about ______ feet.

300

The ______ standard is used for device pairing in Bluetooth technology.

IEEE WPAN

Bluetooth Low Energy (BLE) supports ______ topology.

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

WiMAX is designed to provide broadband connections up to ______ miles.

<p>30</p> Signup and view all the answers

The term ______ Broadband refers to technology that carries both voice and data.

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

Wireless MAN (WMAN) networks cover large geographic areas such as a ______.

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

Zigbee is an example of a ______ technology used in WPANs.

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

Global System of Mobile (GSM) is an internationally recognized ______.

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

Code Division Multiple Access (CDMA) is primarily used in the ______.

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

Satellite Broadband requires a clear line of ______.

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

802.11 WLAN standards define how radio ______ are used for wireless links.

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

802.11a operates at a ______ GHz frequency.

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

802.11b provides data rates of up to ______ Mb/s.

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

802.11g is backward compatible with ______.

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

802.11n requires multiple antennas with ______ technology.

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

802.11ac supports up to ______ antennas.

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

802.11ax is capable of using ______ GHz and 7 GHz frequencies.

<p>1</p> Signup and view all the answers

Laptops, tablets, and smartphones include integrated wireless ______ to communicate wirelessly.

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

A small, wireless ______ interconnects wireless devices in a home environment.

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

Wireless routers serve as an access point to provide ______ access.

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

A ______ is used to interconnect wired devices in a home network setup.

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

The wireless access point enables wireless clients to discover nearby ______.

<p>access points</p> Signup and view all the answers

A ______ provides a default gateway to other networks and the Internet.

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

If a device does not have an integrated wireless NIC, a USB wireless ______ can be used.

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

Vehicles have started to include integrated wireless NICs, enhancing their ______ capabilities.

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

Devices use a radio transmitter/receiver in their integrated wireless ______ to communicate.

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

Wireless clients use their wireless NIC to ______ nearby access points.

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

WPA and WPA2 include two encryption protocols: Temporal Key Integrity Protocol (TKIP) and ______.

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

An Authentication, Authorization, and Accounting (AAA) ______ server is required for enterprise security mode choice.

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

WPA2 is no longer considered secure, hence ______ is recommended when available.

<p>WPA3</p> Signup and view all the answers

The UDP port number for RADIUS Authentication is ______.

<p>1812</p> Signup and view all the answers

The Shared key is used to authenticate the AP with the ______ server.

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

Clients then attempt to associate and authenticate with an ______.

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

After being authenticated, wireless users have access to network ______.

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

APs can be categorized as either autonomous APs or ______ APs.

<p>controller-based</p> Signup and view all the answers

Each autonomous AP acts independently of the others and is managed manually by an ______.

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

Controller-based APs use ______ Access Point Protocol to communicate with a WLC.

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

Types of external antennas include omnidirectional and ______ antennas.

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

Omnidirectional antennas provide ______-degree coverage.

<p>360</p> Signup and view all the answers

Examples of directional antennas include the Yagi and ______ dish.

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

Multiple Input Multiple Output (MIMO) uses multiple antennas to increase ______.

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

Lightweight APs are also known as ______ APs.

<p>controller-based</p> Signup and view all the answers

Study Notes

Types of Wireless Networks

  • Wireless Personal-Area Network (WPAN):

    • Short-range (20-30 ft or 6-9 meters).
    • Based on IEEE 802.15 standard at 2.4 GHz.
    • Examples include Bluetooth and Zigbee.

  • Wireless Local Area Network (WLAN):

    • Covers medium-sized networks up to about 300 feet.
    • Based on IEEE 802.11 standard, operating at 2.4 or 5.0 GHz.

  • Wireless Metropolitan Area Network (WMAN):

    • Serves large areas like cities or districts.
    • Utilizes specific licensed frequencies.

  • Wireless Wide Area Network (WWAN):

    • Extensive area for national or global communication.
    • Uses specific licensed frequencies.

Wireless Technologies

  • Bluetooth:

    • IEEE WPAN standard, connects devices within 300 ft (100 m).

  • Bluetooth Low Energy (BLE):

    • Supports mesh topology for large-scale networks.

  • WiMAX:

    • Alternative broadband technology; IEEE 802.16 standard.
    • Operates over distances of up to 30 miles (50 km).

  • Cellular Broadband:

    • Carries both voice and data.
    • Includes GSM (global standard) and CDMA (US-specific).

  • Satellite Broadband:

    • Requires directional satellite dish for connectivity.
    • Ideal for rural areas lacking other broadband options.

802.11 Standards

  • 802.11:

    • Operates at 2.4 GHz; data rates up to 2 Mb/s.

  • 802.11a:

    • Operates at 5 GHz; data rates up to 54 Mb/s and not interoperable with 802.11b/g.

  • 802.11b:

    • Operates at 2.4 GHz; data rates up to 11 Mb/s with better range.

  • 802.11g:

    • Operates at 2.4 GHz; data rates up to 54 Mb/s and backward compatible with 802.11b.

  • 802.11n:

    • Operates at 2.4 and 5 GHz; data rates between 150 – 600 Mb/s; requires MIMO technology.

  • 802.11ac:

    • Operates at 5 GHz; data rates from 450 Mb/s to 1.3 Gb/s; supports multiple antennas.

  • 802.11ax:

    • Supports 2.4 and 5 GHz; provides High-Efficiency Wireless.

WLAN Components

  • Wireless Network Interface Cards (NICs):

    • Integrated in devices like laptops and smartphones to enable wireless communication.
    • USB wireless adapters can substitute if no integrated NIC is available.

  • Wireless Home Routers:

    • Connects wireless devices; functions as access point, switch, and router.

  • Wireless Access Points (APs):

    • Clients use wireless NICs to connect to APs after authentication for network access.

  • AP Categories:

    • Autonomous APs: Standalone devices, manually configured.
    • Controller-based APs (Lightweight APs): Managed by a Lightweight Controller, automatically configured.

  • Wireless Antennas:

    • Omnidirectional: 360-degree coverage, ideal for common environments.
    • Directional: Focused signal in one direction (e.g., Yagi antenna).
    • MIMO: Uses multiple antennas to increase bandwidth.

Secure WLANs

  • Encryption Methods:

    • WPA: Uses TKIP for legacy support; encrypts Layer 2 payload.
    • WPA2: Uses AES with CCMP for better security.

  • Authentication in Enterprise:

    • Uses RADIUS server for Authentication, Authorization, and Accounting (AAA).
    • Requires RADIUS server IP address and UDP port numbers (1812 for Authentication, 1813 for Accounting).

  • WPA3:

    • Recommended due to security vulnerabilities in WPA2.

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Description

Test your knowledge on the fundamentals of Wireless Personal-Area Networks (WPAN) and Wireless LAN (WLAN). This quiz covers essential concepts such as device pairing in Bluetooth, Bluetooth Low Energy topologies, and the characteristics of WiMAX and Broadband technologies. Challenge yourself and see how well you understand these key networking topics!

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