ITM 301 Lecture Notes - Lecture 1: Computer Network, Wide Area Network, Network Management

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 301
• Professor: Nurul Huda

Document Summary

Computer based system - system uses a microprocessor/computer for executing the task it is designed to perform. To connect, or network, computer systems and exchange information, you need: Stand-alone computer not connected to other computers . Advantages of networks device sharing by multiple users. Capable of sending and receiving info between computers. Not centrally controlled (access may not be uniform/secure) Large networks using the internet: client/server networks. Connects clients and servers from multiple buildings. Uses different transmission media and technology than lan. Connects two or more geographically distinct lans/mans. Uses different transmission methods and media than lan. Enables server to manage data, users, groups, security, applications, other networking functions. Host - enables network resource sharing by other computers. Connectivity device - allows multiple networks/parts of one network to connect and exchange data. Protocol - standard method/format for communication between networked devices. Packet - distinct data units exchanged between nodes. Addressing - scheme for assigning unique identifying number to every node.