Consider the following figure. Assuming TCP Tahoe is the protocol experiencing the behavior shown above, answer the following questions. In all cases, you should provide a short discussion justifying your answer. 45 40- 35- 30 25- 20- 15- 10- 5- 0 2 4 6 8 10 12 14 16 18 20 22 Transmission round TCP window size as a function of time a) Identify the intervals of time when TCP congestion avoidance is operating. b) What is the value of ssthresh at the 8th transmission round and 20t transmission round, respectively? c) Suppose TCP Reno is used (instead of TCP Reno), and assume that triple duplicate ACKs are received at the 18th round. What are the ssthresh and the congestion window size at the 19th round? Congestion window size (segments)

Consider the following figure. Assuming TCP Tahoe is the protocol experiencing the behavior shown above, answer the following questions. In all cases, you should provide a short discussion justifying your answer. 45 40- 35- 30 25- 20- 15- 10- 5- 0 2 4 6 8 10 12 14 16 18 20 22 Transmission round TCP window size as a function of time a) Identify the intervals of time when TCP congestion avoidance is operating. b) What is the value of ssthresh at the 8th transmission round and 20t transmission round, respectively? c) Suppose TCP Reno is used (instead of TCP Reno), and assume that triple duplicate ACKs are received at the 18th round. What are the ssthresh and the congestion window size at the 19th round? Congestion window size (segments)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Q: Suppose you are downloading a large file over a 3-KBps phone link. Your software displays an…

A: The answer is as follows.

Q: Suppose an HTML file references two very small objects on the same server (total 3 object including…

A: Introduction The Hypertext Transfer Protocol (HTTP) is indeed an application layer protocol that…

Q: Does this make sense to you, or do you think it's wrong? Assume that the most recent SampleRTT on a…

A: Introduction: Before attempting a quick retransmit, TCP waits until it receives three duplicate…

Q: Host A and B are communicating over a TCP connection, and Host B has already received all bytes up…

A: Given data: Host A and B are communicating over a TCP connection, and Host B has already received…

Q: Assume that a bottleneck connection with a rate of R bps carries two TCP connections. In both cases,…

A: Two TCP connections are present over some bottleneck link of rate R bps. Both connections have a…

Q: Congestion window size (segments) 45 40 35 30 25 20 15 10 LO 5 0 02 4 6 8 10 12 14 16 18 20 22 24 26…

A: In TCP Reno, the segment loss event occurs when three duplicate acknowledgments (also known as…

Q: A. During which of the following intervals of time is TCP performing slow start"? B. During which of…

A: The question is asking to identify the intervals of time during which TCP is performing slow start,…

Q: 9. Suppose Host A sends two TCP segments back-to-back to Host B. The first segment has sequence…

A: Given: Host A sends two TCP segments back-to-back to Host B. The first segment has sequence number…

Q: TCP is a connection-oriented protocol. This means that. a. there is a direct physical connection…

A: EXPLANATION: TCP (Transmission Control Protocol) is a network protocol that connects two hosts and…

Q: The following is a TCP packet captured by Tcpdump. If an acknowledgement is sent from port 32772 to…

A: The answer to this question is 12765

Q: Consider that only a single TCP (Reno) connection uses one 10Mbps link which does not buffer any…

A: A The maximum window size that this TCP connection can achieve is 10 segments. BThe average window…

Q: So, what may happen to a message when it is transmitted over an unstable TCP connection, and what…

A: The Answer is in step-2.

Q: Does this make sense to you, or do you believe it to be incorrect? Consider the most recent…

A: The answer of the question is given below

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

The following event is shown to occur in the figure below illustrating the operation of TCP Reno. For the following prompt, clearly state where it occurs and how we can identify where this event occurs based on the shape of the graph or changes to the congestion window size. a.) TCP congestion avoidance.
Assume that a bottleneck connection with a rate of R bps carries two TCP connections. In both cases, there is a big file that must be downloaded (in the same direction over the bottleneck link). The files are all transmitted at the same time How much data will TCP be able to transmit each connection?
Consider a TCP connection with the following parameters: a) Initial ssthreshold = 8 b) Round Trip Time (RTT) = 10 milliseconds c) Retransmission Timeout period = 40 milliseconds d) Segment size = 2700 bytes The TCP connection was used to transfer 19 data segments, numbered 1 through 19. While sending the segments, data segment 10 was lost the first time it was sent (but arrived at the receiver properly upon being retransmitted). There were no other segment losses apart from the aforementioned. Assume that data segments received out-of-order are buffered at the receiver. What is the average throughput obtained in sending all the data segments (in bytes/sec)? Draw a diagram to show the transmission of the segments in detail.
Consider one TCP connection on a path with a bottleneck link with capacity L. We have a file of size F(assume F is a very large file size). If TCP segment size is B bytes, the two-way propagation delay is tp and connection is always in congestion avoidance phase, find the following: A. Maximum window size that TCP can achieve B. Average window size and average throughput in this TCP connection C. Time it will take from connection establishment to reaching the maximum window size.
Is this an accurate or wrong statement? For simplicity, let us assume that the most recent SampleRTT on a TCP connection is one second. The current TimeoutInterval value for the connection must be greater than one second in order to maintain the connection.
TCP is a connection-oriented protocol. This means that... O a. both of the endpoints communicating over TCP keep information about the state of the connection. O b. a TCP sender can start sending data to the receiver before the three-way handshake takes place. O c. there is a direct physical connection between the two endpoints of a TCP session. O d. both endpoints of a TCP session have to connect to a third party before data can be sent or received.
Consider transferring an enormous file of L bytes from Host A to Host B. Assume an MSS of 536 bytes. a. What is the maximum value of L such that TCP sequence numbers are not exhausted? Recall that the TCP sequence number field has 4 bytes. b. For the L you obtain in (a), find how long it takes to transmit the file. Assume that a total of 66 bytes of transport, network, and data-link header are added to each segment before the resulting packet is sent out over a 155 Mbps link. Ignore flow control and congestion control so A can pump out the segments back to back and continuously.
15. Consider the following plot of TCP window size as a function of time (y axis is the congestion window size (segments), and x axis is the transmission round). Assuming that TCP Reno is the protocol experiencing the behavior shown above, answer the following questions. 18 16 14 12 10 00 8 6 4 2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1) Identify the intervals of time when TCP slow start is operating. 2) After the 5th transmission round, is segment loss detected by a triple duplicate ACK or by a timeout? 3) What is the value of Threshold at the 7th transmission round? 4) What is the value of Threshold at the 15th transmission round?
Suppose the sequence number field on a TCP packet is 46005. The packet carries 102 bytes of (application-layer) data. The TCP header size on this packet is 20 bytes. (a) What is the sequence number of the last application byte contained in the packet above? (b) What is the value of the acknowledgment number field on the ACK that the receiver generates for the packet above? (c) Do you have sufficient information in this question to determine the value of the sequence number field of the ACK packet that the receiver generates for the packet above? If so, what is the sequence number? If not, why not? (d) If the size of the TCP header were larger (e.g., 24 bytes, due to additional TCP options), would your answers to parts (a)–(c) change? Why or why not?
Below are the two questions, so make sure to answer each part carefully: Why does TCP implement congestion control if it already has flow control to manage the sender's window? Consider our recent reading [Chiu+89] Analysis of the Increase and Decrease algorithms for congestion avoidance in computer networks. How does this article showcases that TCP is fair?
We said that a program should use UDP for a transport layer protocol because UDP has better control over when the data is sent to a section and when (the TCP). A. Why does the program have more power about which data is sent into a segment?
Suppose that a TCP source uses a=0.2 and b=0.25. Further assume that this TCP source has just received three ACKs for which it calculated the following SampleRTT values: 24ms, 31ms, 28ms. What are the latest EstimatedRTT and DevRTT values at this TCP source? Assume that the starting values of EstimatedRTT and DevRTT are 30ms and 3ms, respectively. Also, what is the latest TimeOutInterval at this TCP source? Two-digit precision is sufficient in your calculations.