Telecommunications and Networking. MIS 503 - Management Information Systems MBA Program. A Significant Underestimation. “This ‘telephone’ has too many shortcomings to be seriously considered as a means of communication. the device is inherently of no value to us.”
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MIS 503 - Management Information Systems
“This ‘telephone’ has too many shortcomings to be seriously considered as a means of communication. the device is inherently of no value to us.”
Western Union internal memo, 1876.
the electronic linking of geographically dispersed devices
communications (voice and data) at a distance
Analog and Digital Signals
Figure 4.1 Use of Modem in Analog Network
Table 4.2 Telecommunications Transmission Speeds
Topology of Networks
Figure 4.5 Network Topologies
Figure 4.6 vBNS+ Network Map
Local Area Networks
Types of Networks
“No sensible man would transact his affairs by a means of communication such as Bell’s telephone.”
Western Union Board of Directors letter to shareholders - - October 1876.
The Americans have need of the telephone, but we do not. We have plenty of messenger boys.
Sir William Preece, chief engineer of the British Post Office, 1876
Types of Networks
Table 4.4 Internet Applications
DSL, Cable Modem, and Satellite
Personal Information Management
Group Support Systems
Internet Search Engines
Spreadsheet Analysis Tools
Decision Support Technology
Information Access Technology
Technologies for Virtual Teams
“That is the essence of virtualization: rather than simply re-creating in digital form the physical thing we know as a letter, e-mail reinvents and vastly enhances letter-writing. Unbound by barriers of time and space and endowed with new powers, the electronic letter does something new altogether. The same sort of thing happens when business, the arts, or government are reborn in digital form.”
John Verity, Business Week, 1994
“Computers are getting smaller and smaller. You can expect to have on your wrist tomorrow what you have on your desk today, what filled a room yesterday.”
Nicholas Negroponte , Being Digital
Today’s average consumers wear more computing power on their wrists than existed in the entire world before 1961.
Decentralized or centralized
Establish and enforce standards and procedures
Develop a plan and policy for managing database resources
Data Concurrency Management
Data SecurityControl in the Organization: Controls can be created through…
The CERT recommendations are derived from a report written by Julia Allen entitled Governing for Enterprise Security, which may be found at http://www.cert.org/archive/pdf/05tn023.pdf