BIT 4554 Study Guide - Comprehensive Midterm Guide: Arpanet, System Administrator, Simple Mail Transfer Protocol

• School: Virginia Tech
• Department: Business Information Technology
• Course: BIT 4554
• Professor: Wenqi Shen

Document Summary

Computers have been part of business infrastructure since. 1970"s: 1980 internet was a research project with a few sites. Dramatic economic shifts: people can now telecommute, business communication changed, new industry involving networking tech, products, services. Tech can be combined and interconnected in many ways. Commercial network products are often created by using technologies in new unconventional ways. Additional networking concepts and technologies internetworking with tcp/ip. Network services are provided by application software(s) Network applications may include: email, file transfer, web browsing, voip, distributed databases, skype. A unified underlying network that supports all applications makes a developer"s job much easier. It is possible to design network applications, & write code that communicates over a network, without understanding the hardware/software technologies. Low-level mechanisms and technologies used to send information across a medium ex. Focuses on ways to use physical phenomena. Telephone, had to form a dedicated circuit only few could use at one time. Divides data into small blocks called packets.