Review Question R14 on page 288 of your textbook. Answer true or false? Explain

Question

Review Question R14 on page 288 of your textbook. Answer true or false? Explain your answer. Credit will not be given without a proper explanation. a. Host A is sending Host B a large file over a TCP connection. Assume Host B has no data to send Host A. Host B will not send acknowledgments to Host A because Host B cannot piggyback the acknowledgments on data. b. The size of the TCP rwnd never changes throughout the duration of the connection. c. Suppose Host A is sending Host B a large file over a TCP connection. The number of unacknowledged bytes that A sends cannot exceed the size of the receive buffer. d. Suppose I lost A is sending a large file to 1 lost B over a TCP connection. If the sequence number for a segment of this connection is m, then the sequence number for the subsequent segment will necessarily be m + 1. e. The TCP segment has a field in its header for rwnd. f. Suppose that the last Sample RTT in a TCP connection is equal to 1 sec. The current value of Timeout Interval for the connection will necessarily be greaterthanorequalto 1 sec. g. Suppose Host A sends one segment with sequence number 38 and 4 bytes of data over a TCP connection to Host B. In this same segment the acknowledgment number is necessarily 42.

Explanation / Answer

3)Ans

A) False.

Explanation: Take credit is used only for competence. If there's refusal data packet in the direction of exist piggybacked to, after that B will just send the acknowledgement packet

   b) False.

Explanation: It is the size of the receiver buffer that's by no means distorted. RcvWindow is the part of the receiver buffer that's varying all the time depending on the dispensation capability next to the receiver side and the system traffic

c) False and True.

Explantaion: The come to of difficult bytes that a sends cannot go beyond the size of the receiver window. other than if it can't exceed the receiver's window, then it certainly has no way to go beyond the receiver's shock absorber as the window size be always less than otherwise equal to the buffer size. Resting on the other hand, for urgent post, the sender CAN propel it in even though the receiver buffer is full

d) False.

Explantaion: The series number of the succeeding segment depends on the numeral of 8-byte typescript in the current segmented

e) True.

Explantaion: Every TCP segment has a up to date value of rewind in the accept skylight

   f) False.

Explantaion: Extort = alpha * last_estimated_RTT + (1-alpha)*newly_together_RTT_model. In this case even despite the fact that the last simplest which is the newly_cool_RTT_sample is 1sec, the extort still depends on alpha and last_estimated_RTT. For that reason, the extort is not necessarily superior to 1sec.    g) False. The acknowledgement number has nothing to accomplish with the succession number. The ack. number indicates the after that sequence numeral A is in the family way from B.

g) False.

Explanation:The acknowledgement number has nothing to do with the sequence number. The ack. number indicates the next sequence number A is expecting from B.

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