Consider the following statements about wireless LAN (WLAN) according to the IEE
ID: 3808340 • Letter: C
Question
Consider the following statements about wireless LAN (WLAN) according to the IEEE 802.11 standard. What statements are correct? (A wireless unit could be a computer with a wireless interface or a smartphone, for instance.) An access point is an IP router that routes IP packets between a wireless network and a fixed network. A wireless unit needs to register with an access point before it can use the wireless network. Traffic between wireless units within the same BSS (Basic Service Set) goes via the access point. The available radio frequency range is divided into channels. An access point uses all available channels simultaneously. A wireless unit can send a frame to several access points at the same time. Wireless LANs (such as IEEE 802.11) and wired LANs (such as IEEE 802.3) use different frame formats.Explanation / Answer
Dear Student...
Here are the answers...
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Yes, An access point is an IP router that routes IP packets between a wireless Anetwork and a fixed network.
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Yes, A wireless unit needs to register with an access point before it can use the wireless network.
Explanation: If you want Internet access you will first need to register the hardware (MAC) address of either your mobile device (smartphone, laptop or tablet) or Ethernet card.
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No, Traffic between wireless units within the same BSS does not goes via the access point.
Explanation:
802.11 describes the concept of the Independent Basic Service Set (BSS) which is in effect a Wireless LAN subset, or cell, consisting of the clients and perhaps a Base Station called an Access Point (AP). The most basic BSS is that between just two clients. This is called an Ad-Hoc Network where clients have wireless adapters and can talk to each other i.e. Peer-to-peer, but there is no connection point to a Distribution System (DS) via an Access Point.
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Yes, The availabe radio frequency is divided into channels. An access point uses all available channels simultaniously.
Explanation..
802.11b,g, n radios utilize the 2.400 - 2.500 GHz spectrum, which is a 100 MHz subset of the Industrial, Scientific, and Medical (ISM) radio band. The spectrum is sub-divided into “channels” with a center frequency and bandwidth.
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Yes, A wireless unit can send a frame to several access points at the same time.
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Yes, Wireless LAN IEEE 802.11 and wired LANs such as IEEE 802.3 use different formats.
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