Computer Networks Fall 2016
Project 1: Implementing a Ping Client
1
Project Overview
In this lab, you will learn the basics of socket programming for User Datagram Protocol (UDP) in Python.
You will learn how to send and receive datagram packets using UDP

ECS 152A Computer Networks
Course Information
Fall 2016
1
Prerequisites
Course 60; a calculus-based probability class, such as Course 132 or Electrical and Computer Engineering
161. The following expression is used in the prereq checking tool: ECS060 A (

Ripasso Quiz - Capitoli Preliminare e 1 Chiave
Nome: _
Data: _
Ripasso Quiz - Capitoli Preliminare e 1
I. Domande Orali. Rispondi alle domande con una frase completa. (6 punti)
(Do not write out the questions!)
II. Comprensione - Ascolto. Ascolta linsegna

Nome: _
Data: _
Ripasso Quiz - Capitoli Preliminare e 1
I. Domande Orali. Rispondi alle domande con una frase completa. (6 punti)
(Do not write out the questions!)
II. Comprensione - Ascolto. Ascolta linsegnante, poi decidi se le frasi sono vere o false.

ECS 152A Fall 2015: Assignment 3
Date Assigned: 10/14/2015
Date Due: 10/21/2015
Problem 1
Consider a short 10-meter link, over which a sender can transmit at a rate of 150 bits/sec in both directions.
Suppose that packets containing data are 100,000 bits

ECS 152A Fall 2015: Assignment 2
Date Assigned: 10/05/2015
Date Due: 10/12/2015
Problem 1
4 VoiP Terminals
Statistical
Multiplexing
Switch
Outgoing
Link of rate
R bps
P(talkspurt) = 0.4
P(silence) = 0.6
Talkspurt
Generate data at
56 kbps
Silence
Generate

ECS 152A Fall 2015: Assignment 1
Date Assigned: 9/28/2015
Due: 5pm on 10/5/2015
Problem 1
Consider two hosts A and B connected by a single link of rate R bps. Suppose the two hosts are separated
by m meters, and suppose the propagation speed along the lin

ECS 152: Discussion 3
Problem 1
A switch supporting 4 terminals
Probability of congestion= one or more VoIP terminal are talking.
Ptalk = 0.4.
Probability of i VoIP talking= nCi (Ptalk)^i(1-Ptalk)^(n-i).
Pc= Sum of above probability(For i>capacity).

Programming Languages
ECS 140A
9:00-10:20 AM Tu/Th
160 Scrub Oak Auditorium
Prof. Su ECS 140A Lecture 11
1
Announcements/reminders
HW3 due November 3rd
HW4 will be assigned soon
Midterm on November 10th
Sample midterms will be posted on SmartSite
Exa

ECS 152A Fall 2016: Assignment 4
Problems Related to Internet Checksum
1
Problem
Suppose the data portion of UDP message consists of 10 bytes consisting of the 8-bit unsigned binary ASCII
representation of string Networking. Compute the Internet checksum

ECS 132 Fall 2016: Assignment 2
October 3, 2016
Problems Related to the Birthday Paradox
1
Problem
This problem is related to the sensor network application, that we discussed in the lecture. As I had mentioned in class, time is divided into frames with e

ECS 132 Fall 2016: Assignment 4
October 15, 2016
Problems Related to Gambler Ruin
1
Problem
As mentioned in class the Gambler Ruin problem can be formulated as follows: Two players A and B play
a sequence of rounds; in each round they bet $1. If A wins th

ECS 132 Fall 2016: Project
October 15, 2016
1
Introduction
The goal of this part of the project is to learn about how to design and detect timing channels and also how
to engineer them. This is a draft write up. Some revisions are likely to arise but this

Use R!
Series Editors:
Robert Gentleman
Kurt Hornik
Giovanni Parmigiani
For other titles published in this series, go to
http:/www.springer.com/series/6991
Eric A. Suess Bruce E. Trumbo
Introduction to Probability Simulation
and Gibbs Sampling with R
Eric

Back to Gale-Shapley
Gale-Shapley algorithm. Guarantees to find a stable matching for
any problem instance.
Q. How to implement GS algorithm efficiently?
Initialize each person to be free.
while (some man is free and hasn't proposed to every woman)
cfw_
C

Number Theory Marathon
Mario Ynocente Castro, National University of Engineering,
Peru
1
2
Chapter 1
Problems
1. (IMO 1975) Let f (n) denote the sum of the digits of n. Find f (f (f (44444444 ).
2. Prove that if p and p2 + 8 are prime, then p3 + 8p + 2 is

%-12345X@PJL JOB
@PJL SET ECONOMODE = OFF
@PJL SET RESOLUTION = 600
@PJL ENTER LANGUAGE = POSTSCRIPT
%!PS-Adobe-3.0
%Title: Microsoft Word - toc01_sub_new.doc
%Creator: PSCRIPT.DRV Version 4.0
%CreationDate: 02/22/01 17:32:36
%BoundingBox: 13 13 599 780
%

ECS 152A: Assignment 1
Problems Related to Propagation Delay and Transmission Time
1
Problem
Consider two hosts A and B connected by a single link of rate R bps. Suppose the two hosts are separated
by m meters, and suppose the propagation speed along the

ECS 152A Fall 2016: Assignment 2
Some Review Problems on Exponential Distribution and Poisson Process
1
Problem
Figure 1 shows a network layer scheduler in an end-system which is running two applications one SSH and
the other FTP. We assume that the SSH a

ECS 152A Fall 2016: Assignment 3
Review of Store-and-Forward Networks
1
Problem
Figure 1 shows a source node S connected to a destination node D by two routers R1 and R2 . The parame-
S
R1
Propagation Delay = 10 ms
Data Rate = 1 Mbps
R2
Propagation Delay

Chapter 4
Network Layer
A note on the use of these ppt slides:
Were making these slides freely available to all (faculty, students, readers).
Theyre in PowerPoint form so you see the animations; and can add, modify,
and delete slides (including this one)