Exam 6: Business Networks and Telecommunications

In ____________________,a message is broken up into packets.

Optical fiber technology is used in warehouses where employees can use handheld units to check a central system for availability and location of items to be picked up from and stored in shelves or bins.

What factors should be considered when choosing a networking medium?

What is a modem and how does it work?

IEEE 702.Fi is a family of wireless protocols,collectively known as Wi-Fi.

Each computer or device connected to a network must have a(n)____________________ or proper networking circuitry,which connects through a cable or a wireless antenna to a hub,switch,bridge,or router,which in turn connects to a LAN or WAN.

____ span a greater distance than LANs and usually have more complicated networking equipment for midrange communications.

____ are high-frequency radio waves that can carry signals over long distances with high accuracy.

____ can be very tiny,about the size of a rice grain,or several square inches,depending on the amount of information they need to contain and the environment in which they are used.

Usually,utility companies partner with telecommunications companies to provide Broadband over Power Lines (BPL).

In the context of data communications,a(n)____________________ is a combination of devices or nodes connected to each other through one communication channel.

Worldwide Interoperability for Microwave Access (WiMAX)functions similarly to cell phone communications,because it controls communication from stationary towers.

The ____________________ of a medium is the speed at which data is communicated,which is also called the transmission rate,or simply the bit rate.

GEO satellites are placed in orbit 35,784 kilometers (about 22,282 miles)above earth.

The use of e-mail,IM,and voice mail has brought some secondary benefits to business communications by establishing a permanent written or electronic record of,and accountability for,ideas.

____ connect computers,printers,and other computer equipment for an office,several adjacent offices,an entire building or a campus.

Each ____ of mobile communication technologies refers to a communication protocol or a combination of protocols.

A switch is like a modem,except that it is less "intelligent."

The "virtual" in ____________________ refers to the illusion that the user is accessing a private network directly,rather than through a public network.

Cellular phones derive their name from the territories of service providers,which are divided into areas known as ____________________.