This is a course on how the Internet works, designed for upper-division undergraduate and beginning graduate students. The goals of this course are:

Topics this course covers include application-layer networking, transport protocols (TCP and UDP), routing protocols, IP, link-level protocols, wireless networking, and multimedia networking.

The prerequisite for the course is CS 360 Internet Programming.

To meet the goals of the course, students will complete written homeworks, labs, and exams. The homeworks and exams will consist primarily of written questions that ask the students to apply the principles of network design to a given problem. The labs are designed to provide a deeper understanding of how the Internet works by using simulation.


For the lecture material, we will use

Computer Networking: A Top-Down Approach Featuring the Internet, sixth edition, by James F. Kurose and Keith W. Ross, Addison Wesley, 2012, ISBN 0132856204, ISBN-13 978-0132856201.

Please buy this version of the book. There are important additions and the homework problems are different. There are numerous options for buying or renting this book, some of which are listed at the Kurose & Ross web site.

We will do a significant amount of Python programming in this class. If you are not already familiar with the language, I suggest you learn Python by using some of the free online resources that are available:

I also suggest that you become familiar with the official Python documentation.

Computing Environment

We will be using a Linux environment for this class. You can use the Linux labs, setup your laptop to boot into Linux, or setup a virtual machine running Linux. We will be using Python 2.7, along with various packages such as matplotlib and LaTeX. You are strongly encouraged to become familiar with Linux, its software, and the command-line environment. Being fluent in multiple computing environments is an important part of a CS education.

You may, if you are talented and persistent, figure out how to setup a Mac OS machine with the required software. Based on past experience, you will likely have less luck doing this with a Windows machine. Either way, your code will be expected to run on a Linux machine when you submit it.

Assignments and Grading Policy

The assignments for this class will consist of homework, labs, and exams. Labs must be written in the assigned language and must compile and run on a Linux machine.

Grading for homework and exams will be on a scale of 0 to 10 for each problem, with a final score based on the total possible points. A score of 10 indicates your answer is entirely correct (A), and a score of 5 indicates your answer is entirely wrong but you made a reasonable effort (E). Failure to make a reasonable effort to answer a question scores a 0.

Labs will be graded on a similar point system; the web page will indicate how many points each part of the assignment is worth.

Your final grade will be computed by weighting all scores as follows:

Homework 20%

Exams 30%

Labs 50%

Late Policy

Homework is due in class on the day indicated, and there are no late days. If you have a medical or serious personal issue, please see the instructor to make arrangements for late work. You may always turn in partial work if you are not finished and you will be graded on what you have accomplished.

Labs are due on the day indicated. To accommodate difficulties in your schedule, you can turn in work late, but you will be penalized 10% for being late by up to one week. If an assignment will be more than a week late, you need to see the instructor to make arrangements in advance, with a 20% penalty typically being applied. You may avoid late penalties due to a medical excuse by making an arrangement in advance with the instructor. Exceptions can also be made for a learning disability. No work can be turned in after the university's last day of instruction.

Exams must be taken on the scheduled day. Medical exceptions are always available, but please notify the instructor in advance or as soon as possible. Non-medical exceptions (e.g. traveling to a job interview) can be made in advance with sufficient notice.

Collaboration Policy

All assignments for this class must be completed individually. For homework, you are encouraged to collaborate as much as possible, including discussing solutions and solving problems together, as long as you write up your own answer individually (e.g. do not copy someone else's solution directly). For labs, you are encouraged to discuss solving the labs and any programming problems you encounter generally, but you must write your own code and should not view any other student's code. When producing written work, your use of sources (ideas, quotations, paraphrases) must be properly acknowledged and documented. Exams are open note and open Internet, but must be completed completely on your own.

Educational Policies

Honor Code Standards

In keeping with the principles of the BYU Honor Code, students are expected to be honest in all of their academic work. Academic honesty means, most fundamentally, that any work you present as your own must in fact be your own work and not that of another. Violations of this principle may result in a failing grade in the course and additional disciplinary action by the university.

Policy on Harassment

Harassment of any kind is inappropriate at BYU. Specifically, BYU's policy against sexual harassment extends not only to employees of the university but to students as well. If you encounter sexual harassment, gender-based discrimination, or other inappropriate behavior, please talk to your professor, contact the Equal Employment Office at 422-5895 or 367-5689, or contact the Honor Code Office at 422-2847.

Students with Disabilities

BYU is committed to providing reasonable accommodation to qualified persons with disabilities. If you have any disability that may adversely affect your success in this course, please contact the University Accessibility Center at 422-2767. Services deemed appropriate will be coordinated with the student and instructor by that office.