Communications and Connectivity

• Describe connectivity options: fax machines, e-mail, voice-messaging systems, video conferencing systems, shared resources, and online services.
• Describe conventional modems, T1, ISDN, ADL, and cable modem connections.
• Describe cable and air communication channels - telephone, coaxial, fiber-optics, microwave, and satellite.
• Discuss bandwidth, serial versus parallel transmission, direction and modes of data transmission, and protocols.
• Explain network architecture -  configurations and strategies.
• Describe local area, metropolitan area, and wide area networks.
     

Key Terms

analog signal	fax machine	polling
asynchronous communication port	fiber-optic cable	protocol
asynchronous transmission	full-duplex communication	ring network
bandwidth	half-duplex communication	RS-232C connector
broadband	hierarchical network	satellite communication
bus	host computer	satellite/air connection services
bus network	hybrid network	serial data transmission
cable modem	integrated services digital network (ISDN)	server
client	internal modem	simplex communication
client/server network system	local area network (LAN)	star network
coaxial cable	medium band	synchronous transmission
computer network	metropolitan area network (MAN)	terminal network system
data communications system	microwave communication	time-sharing system
demodulation	modulation	T1, T2, T3, T4 lines
dial-up service	network	topology
digital signal	network architecture	twisted pair
digital subscriber line (DSL)	network bridge	videoconferencing system
distributed processing	network gateway	voiceband
electronic mail	network operating system (NOS)	voice-messaging system
e-mail	node	wide area network (WAN)
enterprise computing	parallel data transmission	wireless modem
external modem	peer-to-peer network system

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