Communications Technology Chapter 7 Starting Along the Information Superhighway © The McGraw-Hill Companies, Inc., 2000

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI External Modems External –also should check to see if manufacturer has a firmware update –lights give assurance of communication

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI Modems Vary in true download and upload speeds Best to consult reviews in computer magazines

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI v.90 standard You must check your ISP and inquire into the compatibility of v.90 modems You will not connect using the v.90 standard unless the ISP can match your v.90 with a v.90 modem at their site

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI ASDL As competition for subscribers increases, prices for ASDL, DSL, G.Lite, and cable Internet services should decrease The large increase in fiber- optic cable in the U.S. will also affect prices

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI Cable Modems Security questions are based on the fact that you are sharing an open line Can get bogged down if many subscribers in the same building or neighborhood, for instance –during busy periods, some have experienced below 56K rates

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI Dishes With more low-level satellites, there is the potential to directly upload The smaller size of dishes will increase their acceptability in apartment complexes and other residential areas

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI Fiber-Optic Fortune reported an increase of up to 2000% capacity from 1999 to 2005 Increased bandwidth availability within the U.S. will be based on additional services and features needed, as video transmission

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI Protocols OSI, Open Systems Interconnection, provides a seven-layer look at software responsibilities –hope for more universal usage OSI is used so often in industry that new protocols are often described in terms of what layers of the OSI model that they use

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI NOS May require a separate operating system to function Scalability is an issue for Windows NT/2000 License fees are driving many small businesses to utilize the Linux operating system for servers

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI Local Area Network LANs are the basis for communications for the majority of small and medium-sized businesses LAN technology is being used for providing high-tech features and convenience in homes –often called home networks –includes both wired and wireless networks

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI Fax Messages fax messages can also be sent via an all-in-one printer-fax-copier business machine

Ch 7 FAQ© The McGraw-Hill Companies, Inc., CCI Electronic Mail Microsoft Outlook linked to being abused by macro viruses Eudora and other programs outside of Microsoft do not recognize macro viruses built using Microsoft Visual Basic File attachments still need to be scanned by anti-virus software before being opened