Term
| What do wireless technologies use to carry information between devices? |
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Definition
| Wireless technologies use electromagnetic waves to carry information between devices. |
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Term
| What is the most common wave lengths used for public wireless communications? |
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Definition
| The most common wave lengths used for public wireless communication are infrared and the Radio Frequency band (RFB). |
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Term
| Which wavelength is relatively low energy and cannot penetrate through walls or other obstacles? |
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Definition
| Infrared is relatively low energy and cannot penetrate through walls or other obstacles. |
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Term
| Which wavelengths has the greatest range? |
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Definition
| X-rays have the greatest range. |
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Term
| What ranges can be used with very few restrictions? |
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Definition
| Radio ranges can be used with very few restrictions. |
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Term
| What are the ranges with the fewest restrictions called? |
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Definition
| The Industrial, Scientific, and Medical (ISM) bands have very few restrictions. |
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Term
| What has made bluetooth technology the preferred mthod for conenction computer peripherals? |
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Definition
| Bluetooth is a preferred method over IR because of one-to-many communications. |
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Term
| what is one of the main advantages of wireless technology? |
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Definition
| one of the main advantages of wireless technology is the ability to provide anytime, anywhere activity. |
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Term
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Definition
| a hotspot is a widespread implementation of wireless in a public location; it allows people to easily connect to the internet |
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Term
| what are the benefits of wireless LAN technology |
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Definition
| the benefit of wireless LAN technology is it makes use of the unlicensed regions of the RF spectrum. |
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Term
| What are the limitations of wireless LAN technology? |
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Definition
| the limitation of wireless LAN technology is the lack of security because anyone could access the data. |
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Term
| What two techniques have been develoepd to help secure wireless transmissions |
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Definition
| encryption and authentication are two techniques that have been developed to help secure wireless transmissions |
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Term
| what are the three major categories of wireless networks? |
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Definition
| the three major categories of wireless networks are wireless presonal area networks (WPAN), wireless local area networks (WLAN), and wireless wide area networks (WWAN). |
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Term
| what is the smallest wireless network, which is used to connect various peripheral devices |
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Definition
| WPAN is the smallest wireless network, which is used to connet mice, keyboards, and PDAs. |
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Term
| What does an access point do? |
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Definition
| an access point provides a connection between wireless hosts and hosts on an Ethernet wired network |
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Term
| What technologies does the WWAN use? |
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Definition
| WWAN uses Code Division Multiple Access (CDMA) or Global System for Mobile Communication (GSMC) |
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Term
| What is a good example of a WWAN |
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Definition
| government agencies are a good example of a WWAN. |
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Term
| What do wireless standards ensure? |
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Definition
| Wireless standards ensure that wireless devices can communicate |
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Term
| what is the main organization responsible for the creation of wireless technical standards |
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Definition
| IEEE is the main organization responsible for the cration of wireless technical standards |
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Term
| What IEEE standard governs the WLAN environment? |
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Definition
| The IEEE 802.11 standard governs the WLAN environment |
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Term
| What are the current standrds for the WLAN environment |
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Definition
| The current standards for the WLAN environment are 802.11a, 802.11b, 802.11g, 802.11n |
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Term
| what organization is respinsible for testing wireless LAN devices from different manufactureers? |
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Definition
| The Wi-Fi Alliance is the organization responsible for testing wireless LAN devices from different manufacturers. |
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Term
| What does the Wi-Fi logo on a device mean? |
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Definition
| The Wi-Fi logo on a device means that htis equipment meets the standards and should interoperate with other devices of the same standards |
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Term
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Definition
| abbreviation for station; a bsic network device |
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Term
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Definition
| antennas increase the output signal strength from a wireless device; receive wireless signals from other devices such as STAs; increase in signal strength from an antenna (Gain) |
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Term
| what is an increase in signal strength from an antenna known as? |
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Definition
| a gain is an increase in signal strength from an antenna |
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Term
| how are antennas classified |
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Definition
| antennas are classified according to the way they radiate the signal |
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Term
| What is the difference between a directional antenna and an omni-directional antenna |
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Definition
| directional antennas concentrate the signal strength in one direction. Omni- directional antennas are designed to emit equally in all directions |
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Term
| which antenna type can achieve greater transmission distances |
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Definition
| directional antennas can achieve great transmission distances |
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Term
| how do you ensure that wireless components connect to the appropriate WLAN? |
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Definition
| using a Service Set Identifier (SSID) helps ensure that wireless components connect to the appropriate WLAN |
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Term
| what is a case-sensitive, alpa-numeric string that can be up to 32 characters |
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Definition
| the SSID is a case-sensitive, alpha-numeric string that can be up to 32 characters. |
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Term
| What is the SSID used for |
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Definition
| SSID is used to tell wireless devices which WLAN they belong to and with which other devices they can communicate |
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Term
| What are the two basic forms of WLAN installations |
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Definition
| 2 basic forms of WLAN: ad-hoc and Infrastructure |
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Term
| what is the simplest form of WLAN network |
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Definition
| Ad-hoc is the simplest form of a wireless network |
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Term
| how is a ad-hoc network created |
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Definition
| it is created by connecting two or more wireless clients together in a peer-to-peer network |
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Term
| what is the mode of wireless communication most often used in the home and business environment |
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Definition
| infrastructure mode is the mode of wireless communication most often used in the home and business environment |
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Term
| what is the area covered by a single access point known as |
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Definition
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Term
| what is the smallest building block of a WLAN |
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Definition
| Basic service Set (BSS) is the smallest building block of a WLAN |
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Term
| What is an Extended Service Set(ESS) |
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Definition
| when multiple BSSs are connected through a Distribution System (DS) |
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Term
| In order to allow movement between the cells without the loss of signal, how much must BSSs overlap? |
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Definition
| BSSs must overlap 10%. this allows the client to conenct to the second AP before disconnecting from the first AP |
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Term
| how are the conversations between sender and receiver controleld |
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Definition
| cannels are used to control covnersations between sender and receiver |
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Term
| what does wireless technology use to avoid collisions |
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Definition
| wireless technology uses separate channels or more bandwidth |
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Term
| What is CTS(Clear to Send) |
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Definition
| a CTS is a message sent to devices indicating that the device may transmit on the channel |
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Term
| what is an ACK(acknowledgement) |
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Definition
| an ACK is a message sent to the device that requested the channel; indicates to the AP that the channel can be released |
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Term
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Definition
| all devices within the BSS will receive the ACK |
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Term
| when should basic configuration tasks be conducted |
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Definition
| basic configuration tasks should be conducted before the AP is connected to the live network |
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Term
| what does the type of mode enabled on the access point depend on? |
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Definition
| the type of mode enabled on the AP depends on the type of host connecting to it |
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Term
| what happens if you select mixed mode |
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Definition
| If you select mixed mode, multiple types of hosts will connect |
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Term
| what must adjacent BSSs use in order to optimize throughput |
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Definition
| adjacents BSSs must use non-overlapping channels in order to optimize throughput |
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