Dalhousie University · Fall 2024
Author · Md Samshad Rahman (@samshad)
Coursework portfolio for CSCI 6704 – Advanced Topics in Computer Networks.
Three assignments progress from signal‑level line‑coding to robust error detection, entirely in Python.
| Folder | Theme | Key tech & skills |
|---|---|---|
| A1 | Networking theory & design questions | Analytical write‑ups (PDF/DOCX) on throughput, latency, link utilisation, queuing, protocol design |
| A2 | Line‑coding & framing lab | Python 3.11 · NumPy · Matplotlib • exercise1.py plots Unipolar, NRZ & Manchester waveforms• exercise2.py implements bit‑stuffing / de‑stuffing |
| A3 | CRC error‑detection lab | Python CLI app & library • Generic CRC compute/verify functions • Burst‑error simulator ( error_detection_crc.py)• Results logged to CSV + markdown analysis |
⭐ Languages: 100 % Python (plus PDF reports)
📁 Repo size: 2 commits, 3 main directories
- Physical‑layer signalling – Visualised trade‑offs between Unipolar, NRZ and Manchester encoding.
- Frame delimitation & transparency – Implemented HDLC‑style bit‑stuffing algorithms and verified correctness.
- Error‑detection maths – Wrote generic CRC routines, then quantified detection probability against random burst errors.
- Python for network simulation – Leveraged NumPy vectorisation and Matplotlib plotting—no heavyweight NS3/OMNeT++.
- Scientific reproducibility – Each lab ships CLI flags, README, and sample CSV logs for easy reruns.
| Purpose | Stack |
|---|---|
| Computation | Python 3.11 · NumPy |
| Visualisation | Matplotlib |
| Data logging | Pandas · CSV |
| Docs | Markdown · PDF |
.
├── A1/ # Assignment 1 – theory/design report
├── A2/ # Assignment 2 – line‑coding & bit‑stuffing labs
├── A3/ # Assignment 3 – CRC error‑detection experiments
├── requirements.txt
└── LICENSE
Each assignment folder contains its own README (or inline docstrings) and sample output.
This project is licensed under the MIT License.
See the LICENSE file for details.
© 2025 Md Samshad Rahman