page7 - a. No congestion control, UDP can send as much as...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
a. No congestion control, UDP can send as much as it wants. b. No state maintenance, does not keep track of packets’ whereabouts. c. Application developer has much more control over what is packaged and  sent. d. Primarily good for real-time applications that don’t care much about packet  loss, but need low delay in transmitting segments. 2. UDP Segment Structure –  consists of four fields: source port, destination port,  length, checksum a. Checksum –  1’s complement sum of all the 16-bit words in the data.  Result is all 1’s except for error bits which are 0’s. b. UDP provides checksum, but does nothing to recover. c. Transport layer protocols do error checking because there is no guarantee  that link layer protocols do the error checking. Error also introduced from  storage in routers. Principles of Reliable Data Transfer
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

page7 - a. No congestion control, UDP can send as much as...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online