Answered: Bit o Bit 15 Bit 16 BR 31 Source Port…

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

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Question

The Data field in both figures signifies the data from the application layer while the other fields are the TCP (the number in brackets are the bit length of the particular field) and UDP header fields, respectively. Assuming that the transport layer always breaks the data (from the application layer) into 1000 bytes chunks (for both protocols) for application A before adding the Transport layer header, what is the overhead (extra number of bytes sent) if TCP was used instead of UDP to transmit 1 million segments of application A. You can assume all segments reached the destination without errors. You can also assume that the options field in the TCP header is 32 bits for all the segments.

Bit o
Bit 15 Bit 16
BR 31
Source Port (16)
Destination Port (16)
Sequence Number (32)
20
Bytes
Acknowledgment Number (32)
Header
Length (4)
Reserved (6) Code Bits(6)
Window (16)
Checksum (16)
Urgent (16)
Options (D or 32 If Any)
Data (Varies)
Figure 2
UDP Header
16-bit source port
16-bit destination port
16-bit UDP length
16-bit UDP checksum
Data
Figure 3

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