Information Technology

Rajeev Kohli
Graduate School of Business . Columbia University

Session 1: Introduction

Sessions 2-3: Computer Networks

A computer network is a group of computers that can communicate electronically. Networks can be composed of computers in a single building (Local Area Networks or LANs), or computers thousands of miles apart (Wide Area Networks or WANs). The Internet is a worldwide collection of computer networks that can communicate with each other using open protocols and standards.

1. Network Details
2. Definitions and Terminology
3. Domain Name Server
4. FTP
5. Telnet
6. E-mail

Highly recommended

You will need the (free) windows media player. If you do not have it, you will be prompted to download it. Then follow the instructions on the screen.

1. Connect to the Stanford Online course on Networks
   http://stanford-online.stanford.edu/courses/index.html
2. Click on CS244A Introduction to Computer Networks
3. Select "Video"
4. Start with the Tuesday, January 5 lecture (it is at the bottom of the page)