Recent questions tagged mac-protocol

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Consider the network that uses CSMA/CD, consists of four hosts and the distribution of this network is shown below:Distance between O and M = 30 kmDistance between M and ...
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Which of the following are controlled-access protocolsReservationPollingTDMAToken PassingCSMA/CAChoose the correct answer from the options given below:$\text{I}$ and $\te...
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There are only three active stations in a slotted aloha network :A,B,C.Each station generates a frame in a time slots with the corresponding probabilities $P_{A}=0.2,P_{B...
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Consider a network using the pure $\text{ALOHA}$ medium access control protocol, where each frame is of length $1,000$ bits. The channel transmission rate is $1$ Mbps ($=...
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Two CSMA/CD stations are each trying to transmit long (multiframe) files. Aftereach frame is sent, they contend for the channel, using the binary exponential backoffalgor...
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A 1-km-long, 10-Mbps CSMA/CD LAN (not 802.3) has a propagation speed of200 m/μsec. Repeaters are not allowed in this system. Data frames are 256 bits long,including 32 bi...
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Sketch the Manchester encoding on a classic Ethernet for the bit stream 0001110101.
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A seven-story office building has 15 adjacent offices per floor. Each office contains awall socket for a terminal in the front wall, so the sockets form a rectangular gri...
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Consider five wireless stations, A, B, C, D, and E. Station A can communicate with allother stations. B can communicate with A, C and E. C can communicate with A, B andD....
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Frames arrive randomly at a 100-Mbps channel for transmission. If the channel is busy whena frame arrives, it waits its turn in a queue. Frame length is exponentially dis...
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How long does a station, s, have to wait in the worst case before it can start transmittingits frame over a LAN that uses the basic bit-map protocol?
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In an infinite-population slotted ALOHA system, the mean number of slots a stationwaits between a collision and a retransmission is 4. Plot the delay versus throughputcur...
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A large population of ALOHA users manages to generate 50 requests/sec, includingboth originals and retransmissions. Time is slotted in units of 40 msec.(a) What is the ch...
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Consider the delay of pure ALOHA versus slotted ALOHA at low load. Which one isless? Explain your answer.
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A group of N stations share a 56-kbps pure ALOHA channel. Each station outputs a1000-bit frame on average once every 100 sec, even if the previous one has not yetbeen sen...
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Consider the network with 8 nodes running the carrier sense multiple access MAC protocol. The maximum data rate of the network is 10 Mbps. Each node sends traffic accordi...
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A problem with __________ is that capacity is wasted because the medium will generally remain idle following the end of a transmission, even if there are one or more stat...
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Consider the Ethernet LAN shown belowThe LAN has a data transfer rate of 100Mbps and signal propagates at the speed of the 2 x 108 m/s. If system A and the system E start...
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In an infinite-population slotted ALOHA system, the mean number of slots a station waits between a collision and a retransmission is $4$. Plot the delay versus throughput...
1 1 vote
1 answers 1 answer
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A large population of ALOHA users manages to generate $50 \hspace{0.1cm} requests/sec$, including both originals and retransmissions. Time is slotted in units of $40 \hsp...
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12 12 votes
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Which media access control protocol is used by $\textsf{IEEE 802.11}$ wireless LAN?CDMACSMA/CAALOHANone of the above
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The $\textsf{IEEE}$ standard for WiMax technology is$\textsf{IEEE 802.16}$$\textsf{IEEE 802.36}$$\textsf{IEEE 812.16}$$\textsf{IEEE 806.16}$
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Which of the following is a MAC address?$\textsf{192.166.200.50}$$\textsf{00056A:01A01A5CCA7FF60}$$\textsf{568, Airport Road}$$\textsf{01:A5:BB:A7:FF:60}$