Recent questions tagged stop-and-wait / GATE Overflow for GATE CSE

9 votes

1 answer

61

Question 3) Sliding Window Protocol
In what protocols it is possible for sender to receive an ACK for a packet that falls outside of its window . Please justify ur answer . a)Stop and wait b)SR c) GBN d) all My approach Ws = 3 t=0 sends packets 1,2,3 t=1 reveiver ACK 1,2,3 ... t=3 This is outside window The above is true for GBN and SR . What about Stop and Wait ? Answer is given as Stop and wait

In what protocols it is possible for sender to receive an ACK for a packet that falls outside of its window . Please justify ur answer .a)Stop and waitb)SRc) GBNd) allMy ...

pC

4.6k views

pC asked Jul 8, 2016

2 votes

1 answer

62

Question 2 | Stop and wait ARQ
In stop and wait protocol , If the packet size is 1 KB and propogation tme is 15ms the chanel capacity is 109 bits / sec then find : transmission time channel utilisation sender utilisation link utilisation line utilisation What do you account about the difference in channel utilisation and sender utilisation

In stop and wait protocol , If the packet size is 1 KB and propogation tme is 15ms the chanel capacity is 109 bits / sec then find :transmission timechannel utilisationse...

pC

5.3k views

pC asked Jul 6, 2016

0 votes

1 answer

63

If the packet size is 1200 byte and speed is 70% of speed of light find throughput in stop and wat protocol for a. 12km

Kiran Sangada

2.7k views

Kiran Sangada asked Jun 29, 2016

0 votes

1 answer

64

Stop and wait protocol
R=transmission rate S=signal speed D=Distance between sender and receiver T=time to create one frame F=number of bits in a frame N=number of data bits in a frame A=number of bits in an acknowledgement F>N Q.1 Calculate the channel utilization My take: (F/R) / (F/R + 2*D/S + A/R ... .2 Calculate the effective data rate. My take: ( (F/R) / (F/R + 2*D/S + A/R + 2*T) ) * (N/F)

R=transmission rateS=signal speedD=Distance between sender and receiver T=time to create one frameF=number of bits in a frameN=number of data bits in a frameA=number of b...

Prashant Sharma 1

1.0k views

Prashant Sharma 1 asked Jun 22, 2016

7 votes

6 answers

65

ISRO-2013-41
What will be the efficiency of a Stop and Wait protocol, if the transmission time for a frame is $20$ns and the propagation time is $30$ns? $20$% $25$% $40$% $66$%

What will be the efficiency of a Stop and Wait protocol, if the transmission time for a frame is $20$ns and the propagation time is $30$ns?$20$%$25$%$40$%$66$%

makhdoom ghaya

7.6k views

makhdoom ghaya asked Apr 27, 2016

3 votes

2 answers

66

ACE-BOOKLET-VOL2-Level2-Q3 in swp ,sender utilization
If the packet size is 1KB and propagation time is 15ms, the channel capacity is $10^9$ b/s then find the transmission time and utilization of sender in stop and wait protocol.

If the packet size is 1KB and propagation time is 15ms, the channel capacity is $10^9$ b/s then find the transmission time and utilization of sender in stop and wait prot...

kvkumar

3.2k views

kvkumar asked Apr 13, 2016

58 votes

11 answers

67

GATE CSE 2016 Set 1 | Question: 55
A sender uses the Stop-and-Wait $\text{ARQ}$ protocol for reliable transmission of frames. Frames are of size $1000$ ... $100$ milliseconds. Assuming no frame is lost, the sender throughput is ________ bytes/ second.

A sender uses the Stop-and-Wait $\text{ARQ}$ protocol for reliable transmission of frames. Frames are of size $1000$ bytes and the transmission rate at the sender is $80\...

Sandeep Singh

26.4k views

Sandeep Singh asked Feb 12, 2016

2 votes

1 answer

68

MadeEasy Test Series: Computer Networks - Flow Control Methods
Bandwidth of a link is 1000 Mbps and round trip time is given as 250 μ sec. If frame size is 500 bits, the utilization (in percentage) of channel when STOP and WAIT ARQ is used is _______.

Bandwidth of a link is 1000 Mbps and round trip time is given as 250 μ sec. If frame size is 500 bits, the utilization (in percentage) of channel when STOP and WAIT ARQ ...

Akanksha Kesarwani

1.4k views

Akanksha Kesarwani asked Feb 1, 2016

1 votes

4 answers

69

CN stop and wait bandwidth is 1.5 Mbps
If the bandwidth f the line is 1.5 Mbps, RTT is 45ms and packet size is 1KB, then find link utilization stop and wait protocol.

If the bandwidth f the line is 1.5 Mbps, RTT is 45ms and packet size is 1KB, then find link utilization stop and wait protocol.

Desert_Warrior

11.1k views

Desert_Warrior asked Dec 13, 2015

1 votes

2 answers

70

MadeEasy Test Series: Computer Networks - Flow Control Methods
Please help me to solve problem 8.

Please help me to solve problem 8.

shikharV

1.8k views

shikharV asked Nov 21, 2015

3 votes

3 answers

71

Transmission rate in a 3 node 2 link sliding window system
The distance between A to B is 4000 km. The distance between B and C is 1000 km.The propogation delay is 5 micro sec/ km for both the links. The data rate between A and B is 100kbps. Both the links are full duplex. All data frames are ... rate (in kbps) between B and C so that buffers of node B are not flooded? A. 100 B.150 C.200 D.250

The distance between A to B is 4000 km. The distance between B and C is 1000 km.The propogation delay is 5 micro sec/ km for both the links. The data rate between A and B...

dirac

3.4k views

dirac asked Oct 5, 2015

0 votes

2 answers

72

Efficiency of Stop n Wait protocol
What will happen if Ttrans> (Ttrans+2*Tprop) in efficiency formula of stop n wait protocol? What it logically mean?

What will happen if Ttrans (Ttrans+2*Tprop) in efficiency formula of stop n wait protocol? What it logically mean?

sonu

1.5k views

sonu asked Sep 27, 2015

36 votes

6 answers

73

GATE CSE 2015 Set 1 | Question: 53
Suppose that the stop-and-wait protocol is used on a link with a bit rate of $64$ $\text{kilobits}$ per second and $20$ $\text{milliseconds}$ propagation delay. Assume that the transmission time for the acknowledgment and the processing time ... . Then the minimum frame size in bytes to achieve a link utilization of at least $50$ $\text{%}$ is_________________.

Suppose that the stop-and-wait protocol is used on a link with a bit rate of $64$ $\text{kilobits}$ per second and $20$ $\text{milliseconds}$ propagation delay. Assume th...

makhdoom ghaya

26.4k views

makhdoom ghaya asked Feb 13, 2015

36 votes

4 answers

74

GATE CSE 2015 Set 2 | Question: 8
A link has transmission speed of $10^6$ bits/sec. It uses data packets of size $1000$ $\text{bytes}$ each. Assume that the acknowledgment has negligible transmission delay and that its propagation delay is the same as the data propagation delay. ... $\text{%}$. The value of the one way propagation delay (in milliseconds) is_____.

A link has transmission speed of $10^6$ bits/sec. It uses data packets of size $1000$ $\text{bytes}$ each. Assume that the acknowledgment has negligible transmission dela...

go_editor

11.9k views

go_editor asked Feb 12, 2015

22 votes

3 answers

75

GATE IT 2005 | Question: 72
A channel has a bit rate of $4$ $kbps$ and one-way propagation delay of $20$ $ms$. The channel uses stop and wait protocol. The transmission time of the acknowledgment frame is negligible. To get a channel efficiency of at least $50$\text{%}$, the minimum frame size should be $80$ $\text{bytes}$ $80$ $\text{bits}$ $160$ $\text{bytes}$ $160$ $\text{bits}$

A channel has a bit rate of $4$ $kbps$ and one-way propagation delay of $20$ $ms$. The channel uses stop and wait protocol. The transmission time of the acknowledgment fr...

Ishrat Jahan

11.7k views

Ishrat Jahan asked Nov 3, 2014

43 votes

8 answers

76

GATE IT 2006 | Question: 68
On a wireless link, the probability of packet error is $0.2$. A stop-and-wait protocol is used to transfer data across the link. The channel condition is assumed to be independent of transmission to transmission. What is the average number of transmission attempts required to transfer $100$ packets? $100$ $125$ $150$ $200$

On a wireless link, the probability of packet error is $0.2$. A stop-and-wait protocol is used to transfer data across the link. The channel condition is assumed to be in...

Ishrat Jahan

13.4k views

Ishrat Jahan asked Nov 1, 2014

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