The maximum aggregate capacity for an 802.11 DSSS system in a co-located environment is?
Answer(s): B
This question is slightly confusing.However, if read closely, it states that the system is in a "co-located" environment. From our previous discussion, since DSSS systems support a maximum of 3 APs in a co-located environment and given that the 802.11 standard allows speeds upto 2 Mbps, therefore, that would make the answer 2(x3) = 6Mpbs. Therefore, the answer should be B.
After August 31, 2000, the FCC mandated that FHSS systems using fewer than 75 hops must have a maximum power output of?
- a part of the 802.15 standard for WPANs (Wireless Personal Area Networks). Bluetooth is a close-range networking protocol primarily used for mobile devices, utilizing FHSS in the 2.4 GHz ISM band at around 1600 hops/second. Because of the high hop rate, Bluetooth devices will greatly interfere with other devices operating in the 2.4 GHz band.
Which of the following us TRUE when using Bluetooth in an 802.11b environment?
Answer(s): C
Less than 75 hops enforces the Post August 31, 2000 rule for FHSS systems in which max. power is 125 mW and max. carrier frequency is 5 Mhz (See page 73 of the CWNA study Guide (2nd edition))
Before going into a low-power state (sleep), what function must a wireless station operating in a BSS perform?
Answer(s): A
Traffic Indication Map (TIM) - transmitted by the access point to indicate to sleeping stations the presence of buffered transmissions for a particular station Traffic Indication Map (TIM)The TIM is used an as indicator of which sleeping stations have packets queued at the access point. This information is passed in each beacon to all associated stations. While sleeping, synchronized stations power up their receivers, listen for the beacon, check the TIM to see if they are listed, then, if they are not listed, they power down their receivers and continue sleeping.
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Ridhi commented on April 20, 2009 Myfeedback about HP0-064. EXCELLENT... I pass. Very Excellent GTA upvote
Taylor G commented on April 18, 2009 The good news is I passed the exam! Dijon upvote