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Recent questions tagged wireless-lan

0 votes
2 answers
1
Suppose that an 11-Mbps 802.11b LAN is transmitting 64-byte frames back-to-back over a radio channel with a bit error rate of 10−7. How many frames per second will be damaged on average?
asked Mar 15, 2019 in Computer Networks ajaysoni1924 328 views
0 votes
1 answer
2
Quoted Question: One of the large unlicensed bands used for 802.11b WiFi is 2.4GHz. What is the length of these waves? Answer in feet.
asked Aug 27, 2018 in Computer Networks Phantom5 217 views
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0 answers
3
Suppose that you have two nodes communicating with an AP that are hidden terminals to one another. The AP, except for acknowledgments, remains silent and there are no other transmitters in the network. The two nodes are both transmitting packets whose active ... nodes start transmitting at exactly the same time, what is the minimum number of backoffs before a packet is delivered successfully?
asked Dec 11, 2017 in Computer Networks vijay_jr 167 views
0 votes
2 answers
4
The unlicensed National Information Infrastructure band operates at the _________ frequency (A) 2.4 GHz (B) 5 GHz (C) 33 MHz (D) 5 MHz
asked Sep 17, 2017 in Computer Networks rishu_darkshadow 539 views
0 votes
3 answers
5
Which technology is sometime referred to as wireless cable ? (A) MMDS (B) ATM (C) LMDS (D) CDMA
asked Sep 17, 2017 in Computer Networks rishu_darkshadow 650 views
2 votes
0 answers
6
A wireless LAN using DSSS with _______-bit chip code needs 320 MHz for sending data that originally required a 20-MHz bandwidth
asked Jul 20, 2017 in Computer Networks Neeraj7375 92 views
1 vote
0 answers
7
A wireless LAN using DSSS with a 4-bit chip code needs 10 MHz for sending data that originally required a _______-MHz bandwidth.
asked Jul 20, 2017 in Computer Networks Neeraj7375 69 views
1 vote
1 answer
8
What is the maximum operating rate of a wireless LAN using infrared communication ? $1$ mbps $2$ mbps $5$ mbps $11$ mbps
asked Sep 16, 2016 in Computer Networks makhdoom ghaya 890 views
1 vote
1 answer
9
Which of the following services is not provided by wireless access point in 802.11 WLAN? Association Disassociation Error correction Integration
asked Aug 8, 2016 in Computer Networks jothee 1.6k views
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