HW3 - CS 453: Networks Fall 2009 Homework 3 Instructor: V....

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

View Full Document Right Arrow Icon
CS 453: Networks Fall 2009 Homework 3 Instructor: V. Arun Assigned: 10/07/09, Due: 10/14/09 Note: Please show as much of your work as you can. Whenever possible, use variable names before plugging in numerical values . Even if you get the answer wrong, you can get partial credit if you show your approach clearly. It will help us tell you where you made a mistake. If you plug in numbers right upfront and your answer is wrong, you will not get partial credit. Problem 1: Quickies (25 points) A. Explain the key difference between a UDP or TCP checksum for a packet and a cryptographic hash function (or a digest) for BitTorrent chunks. B. Explain for what kind of applications is UDP preferable to TCP. C. Give two examples of pure P2P systems and two examples of hybrid P2P systems. D. Explain the following terms in the context of BitTorrent: 1) tit-for-tat, 2) choking and optimistic unchoking. E.
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

HW3 - CS 453: Networks Fall 2009 Homework 3 Instructor: V....

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