CSS 432: Network Design

CSS 432: Network Design - Assignments

Language

We use C/C++ for all programming assignments.

Operating Systems

The operating system used for all assignments is Linux (UW1-320).

By the first lecture of this course, your Linux account will be set up to use. You should also be able to enter UW1-320 Linux Laboratory with your student ID card. The following contact points are available if you have any problems on your Linux account:

Meryll Larkin <MLarkin@uwb.edu>, the UWB Linux administrator sets up your Linux account if it has not yet been created. If you have an account but have forgotten your password, you should visit him in the IS office or UW1-337.
Dina Meske<dinam@u.washington.edu>, our CSS counseling services coordinator helps you enter UW1-320 with your ID card if it does not unlock the laboratory entrance.

Here is a procedure to log on one of the Linux machines and upload your files:

To log on any of LAB320 machines, use ssh and establish a connection to one of uw1-320-00.bothell.washington.edu ~ uw1-320-31.bothell.washington.edu.
Note that uw1-320-00 ~ uw1-320-15 are connected to a 100Mbps network, while uw1-320-16 ~ uw1-320-31 connected to a 1Gbps switch.
To transfer files to the LAB320 file server
1. Use sftp and establish a connection to metis.bothell.washington.edu, or
2. Use scp at a LAB machine, so that files are copied from the outside to the LAB320 machine. The following example copies a file "file.java" from goodall to a LAB machine.
```
    scp mfukuda@goodall.u.washington.edu:file.java .
```

Socket Ports

As your own socket port, you should use the last five digits of your student ID. Do not use other ports than your own port.

Assignments

Program 1: exercises basic TCP communication and evaluates its performance over 1Gbps networks.
Program 2: implements the sliding window algorithm and evaluates its performance improvement over 100Mbps and 1Gbps networks.
Program 3: analyzes several TCP aspects such as state transition, Nagle's algorithm, additive increment, and slow start, using tcpdump, ttcp, netstat, and strace.
Program 4: analyzes the hostent data structure that is related to DNS.
Final project: builds an ftp client program.

Submissions

Each assignment sheet specifies what to turn in. Programming assignments 1, 2, 3, and 4 requires only a hard copy to be turned in, while the final project needs both a hard copy and a soft copy.
Assignments are due at midnight on the assigned due date. No matter the circumstances, it is always best to turn in something.

Grading

Your report will be graded based on the grading criteria shown in each assignment sheet.