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Recent questions tagged token-ring

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Determine the efficiency of a token ring with a data rate of 250Mbps, a ring latency of 120 µsec and 5000 bit packets. Assume M hosts want to transmit and each host holds the token for a maximum of frame transmission time.
asked Dec 2, 2018 in Computer Networks Yazanotoom50 209 views
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A broadcast channel has 10 nodes and total capacity of 16Mbps. It uses polling for medium access. Once a node finishes transmission, there is a polling delay of 100 µseconds to poll the next node. Whenever a node is polled, it is allowed to transmit a maximum of 1500 Bytes. The maximum throughput of broadcast channel is: 8 Mbps 14 Mbps 100/11Mbps 750/85 Mbps
asked Nov 30, 2018 in Computer Networks Samaa.qudah 103 views
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Consider a 8Mbps token LAN with a ring latency of 256µsec. A host need to transmit seizes the token, and then it sends a frame of 1024 bytes removes the frame after it has circulated all around the ring and finally releases the token. This process is repeated for every frame. Assuming that only a single host wishes to transmit, then the effective data rate (in Mbps) is? 4.53 5.36 6.7 9.4
asked Nov 30, 2018 in Computer Networks Samaa.qudah 119 views
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In a token ring, if the propagation delay in a ring is equal to the transmission delay, then what is the maximum efficiency? Assuming that only one station is in token ring.
asked Nov 30, 2018 in Computer Networks Samaa.qudah 118 views
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Determine the efficiency of a token ring with a data rate of 250Mbps, a ring latency of 120 µsec and 5000 bit packets. Assume M hosts want to transmit and each host holds the token for a maximum of frame transmission time.
asked Nov 30, 2018 in Computer Networks Samaa.qudah 193 views
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1 answer
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In a token ring network the transmission speed is 107 bps and the propagation speed is 200 meters/ μs. The 1-bit delay in this network is equivalent to: (A) 500 meters of cable. (B) 200 meters of cable. (C) 20 meters of cable. (D) 50 meters of cable.
asked Jun 15, 2018 in Computer Networks bts 246 views
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If bandwidth of a token ring is 48Mbps and token holding time is 5ms then find the minimum and maximum payload in bytes?
asked Nov 23, 2017 in Computer Networks Salazar 662 views
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Consider a token ring network with a length of 2km having 10 stations including a monitoring station.The propagation speed of the signal is 2*108m/s and the token transmission time is ignored. If each station is allowed to hold the token for 2 microseconds, the minimum time for which the monitoring station should wait before assuming that the loken is lost is?
asked Jan 7, 2017 in Computer Networks pranjalgennext 149 views
3 votes
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Suppose each station in IEEE 802.5 with 1bit delay is 48m apart from its neighbouring stations. Token is of 3 Bytes and propagation speed is 2.4 * 10^8 m/sec. To avoid overlapping in the 4Mbps token ring the monitor must insert 15 bits of artificial delay into ring. How many stations are there in the ring? A.2 B.3 C.4 D.5
asked Oct 2, 2016 in Computer Networks Shubhi Tiwari 2.3k views
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A heavily loaded $1$ km long, $10$ Mbps token ring network has a propagation speed of $200$ meter per micro-second. Fifty stations are uniformly spaced around the ring. Each data packet is $256$ bits long, including $32$ bits of header. The token is of $8$ bits. What is the effective data rate of the network assuming the stations always have packets to transmit?
asked May 31, 2016 in Computer Networks jothee 245 views
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Consider a 10 Mbps token ring LAN with a ring latency of 400 µs. A host that needs to transmit seizes the token. Then it sends a frame of 1000 bytes, removes the frame after it has circulated all around the ring, and finally releases the token. This process is repeated for every frame. Assuming that only a single host wishes to transmit, the effective data rate is 1 Mbps 2 Mbps 5 Mbps 6 Mbps
asked Nov 2, 2014 in Computer Networks Ishrat Jahan 3.3k views
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Consider a token ring topology with N stations (numbered 1 to N) running token ring protocol where the stations are equally spaced. When a station gets the token it is allowed to send one frame of fixed size. Ring latency is tp, while the transmission time of a frame is tt. All other latencies ... maximum utilization of the token ring when tt = 5 ms, tp = 3 ms, N = 15 is: 0.545 0.655 0.9375 0.961
asked Oct 31, 2014 in Computer Networks Ishrat Jahan 898 views
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Consider a token ring topology with N stations (numbered 1 to N) running token ring protocol where the stations are equally spaced. When a station gets the token it is allowed to send one frame of fixed size. Ring latency is tp, while the transmission time of a frame is tt. All other latencies ... The maximum utilization of the token ring when tt =3 ms, tp = 5 ms, N = 10 is 0.545 0.6 0.857 0.961
asked Oct 31, 2014 in Computer Networks Ishrat Jahan 1.5k views
28 votes
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In the diagram shown below, $L1$ is an Ethernet LAN and $L2$ is a Token-Ring LAN. An $IP$ packet originates from sender $S$ and traverses to $R$, as shown. The links within each $\text{ISP}$ and across the two $\text{ISP}$s, are all point-to-point optical links ... of the $\text{TTL}$ field is $32$. The maximum possible value of the $\text{TTL}$ field when $R$ receives the datagram is _______.
asked Sep 28, 2014 in Computer Networks jothee 7.8k views
8 votes
3 answers
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Consider a token ring network with a length of 2 km having 10 stations including a monitoring station. The propagation speed of the signal is $2 \times10^8m/s$ and the token transmission time is ignored. If each station is allowed to hold the token for $2 µsec$, the minimum time for which the monitoring station should wait (in $µsec$) before assuming that the token is lost is _______.
asked Sep 26, 2014 in Computer Networks jothee 5.2k views
8 votes
2 answers
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In a token ring network the transmission speed is 10$^7$ bps and the propagation speed is 200 meters/$\mu$s. The 1-bit delay in this network is equivalent to: 500 meters of cable. 200 meters of cable. 20 meters of cable. 50 meters of cable.
asked Sep 22, 2014 in Computer Networks Kathleen 6.2k views
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