Suppose TCP is used over a lossy link that loses on average one segment in four. Assume the delay x bandwidth window size is considerably larger than four segments. (a) What happens when we start a connection? Do we ever get to the linear-increase phase of congestion avoidance? (b) Without using an explicit feedback mechanism from the routers, would TCP have any way to distinguish such link losses from congestion losses, at least over the short term? (c) Suppose TCP senders did reliably get explicit congestion indications from routers. Assuming links as above were common, would it be feasible to support window sizes much larger than four segments? What would TCP have to do?

Suppose TCP is used over a lossy link that loses on average one segment in four. Assume the delay x bandwidth window size is considerably larger than four segments. (a) What happens when we start a connection? Do we ever get to the linear-increase phase of congestion avoidance? (b) Without using an explicit feedback mechanism from the routers, would TCP have any way to distinguish such link losses from congestion losses, at least over the short term? (c) Suppose TCP senders did reliably get explicit congestion indications from routers. Assuming links as above were common, would it be feasible to support window sizes much larger than four segments? What would TCP have to do?

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: 11. Given a 75 packet message to send and a large flow control window, assume the initial congestion…

A: As per our guidelines, we are supposed to answer only one question. Kindly repost the remaining…

Q: Question 4 please

A: On packet switched networks, fragmentation is a common occurrence. When a large packet is received…

Q: e. Suppose dprop is greater than dtrans. At time t = durans, where is the first bit of the packet?…

A: Requested answers are given below:

Q: Eight data terminals statistically share the capacity of an outgoing link. Traffic is combined from…

A: The Handwritten Solution is given below:

Q: 2. Packet transmission. a. Consider a packet of length L that begins at end system A and travels…

A: Below is the complete solution with explanation in detail for the given questions about Packet…

Q: 2 Performance / TCP A L1 Consider the following network: R L2 B Assume the network uses packet…

A: A networking technology and communication technique called packet switching involves dividing data…

Q: COMPUTER NETWORKS QUESTION : If two hosts start communicating using TCP Reno (with fast retransmit…

A: Actually, TCP stands Transmission Control Protocol.

Q: Consider a TCP connection with the following parameters: a) Initial ssthreshold = 4 segments b)…

A: Q1 Answer:- We have the given data: Initial ssthreshold = 4 segments Round Trip Time (RTT) = 10…

Q: Suppose two hosts A and B are connected via a router R. The A-R link has infinite bandwidth; the R-B…

A: Here is explanation regarding the graph.

Q: Q.4) Consider the scenario below where 4 TCP senders are connected to 4 receivers. Senders transmit…

A: Here is the explanation of the above problem.

Q: as a possible congestion control mechanism in a subnet using virtual circuits internally, a router…

Q: 6. Assume that a TCP connection is established over a moderately congested link. The connection…

A: Here is the explanation of the above problem. See below steps.

Q: A TCP PDU of length 40,513 octets (including the TCP header) is to be transmitted over a physical…

A: To calculate the number of bits sent over the connection from the source to the destination, we need…

Q: Assume the VC number of a virtual-circuit network is a 16-bit field. What is the maximum number of…

A: Understanding the Concept of Virtual Circuits and VC NumbersA virtual-circuit network utilizes…

Q: Suppose TCP is used over a lossy link that loses on average one segment in four. Assume the delay x…

A: Introduction: Transmission Control Protocol is a standard that portrays how to spread out and keep…

Question

Suppose TCP is used over a lossy link that loses on average one segment in four. Assume the delay x
bandwidth window size is considerably larger than four segments.
(a) What happens when we start a connection? Do we ever get to the linear-increase phase of
congestion avoidance?
(b) Without using an explicit feedback mechanism from the routers, would TCP have any way to
distinguish such link losses from congestion losses, at least over the short term?
(c) Suppose TCP senders did reliably get explicit congestion indications from routers. Assuming links as
above were common, would it be feasible to support window sizes much larger than four segments?
What would TCP have to do?

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

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 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

Consider a TCP connection with the following parameters: a) Initial ssthreshold = 4 segmentsb) Round Trip Time (RTT) = 10 millisecondsc) Timeout period = 40 millisecondsd) Segment size = 3900 bytesThe TCP connection was used to transfer 17 data segments. While sendingthe segments, data segment 7 and data segment 15 were lost the first timethey were sent (but arrived at the receiver properly when retransmitted).There were no other segment losses apart from the aforementioned. Assumethat data segments received out-of-order are buffered at the receiver. Whatis the average throughput obtained in sending all the data segments (inbytes/sec) including draw a diagram to show the communication process in detail.
A TCP connection is established through 10 wireless hops in an acoustic underwater ad hoc network. Assume that each hop is 100 meter in the average, acoustic signals travel 1500 meter per second, 10 kilobit data can be sent per second over a link, the source node has one megabyte of data to send, the receiver window size is 64 kilobytes, the maximum segment size is 1 kilobyte and the average processing delay for routing at each node is one millisecond. Assume also that the following segments do not reach the destination: 67, 112, 137. What would be the average utilization of the links for this connection if there is not another communications through them? Explain an alternative approach to increase the bandwidth utilization?
We discussed increasing the timeout interval once a timeout occurred. This strategy is used to control traffic congestion. Why, in addition to the doubling-timeoutinterval approach, does TCP require a window-based congestion-control method?
COMPUTER NETWORKS QUESTION : In TCP, hosts need to set the retransmission timeout (RTO) dynamically to adapt for the routing performance and optimize the bandwidth utilization. Assume that one sending hosts found from previous packet/acknowledgement pairs that the RTT between it and the receiver is 45 mS. What will be the RTO of that sending host after receiving a new packet/Ack pair witha new RTT sample = 100 mS. (assume that ?=0.875)