Exam 6: Telecommunications and Networks

_____ is a form of transmission that employs signals at a frequency higher than microwave signals but lower than visible light.

A low cost form of wireless communications technology often used in security systems and heating and cooling systems.

Long Term Evolution is a standard for wireless communications for mobile phones based on packet switching.

In a(n) _______network, the communicating devices, and the data is broken into packets for sending over the network.

Smartphones have their own software operating systems and are capable of running applications that have been created for that operating systems or any other operating system.

Smartphone applications are developed by _____.

_____ is a common form of guided transmission media that uses extremely this strands of glass bound together in a sheathing and light beams to transmit signals.

With distributed processing, processing devices are placed at remote locations but are connected to each other via a network.

A PBX is a communications system that manages both voice and data transfer within a building and to outside lines; it can be used to connect hundreds of internal phone lines to a few phone company lines.

_____ is a network that connects users and their computers in a geographical area that spans a campus or a city.

The computers and devices on a network are also known as _____.

In a circuit switching network, no fixed path is created between the communicating devices, and the data is broken into packets for sending over the network.

_____ is a bundled set of communications services, including Internet, telephone, and TV, that operates over a total fiber-optic communications network.

Channel bandwidth refers to the diameter of the telecommunications media.

______ is a communications service that delivers recorded emergency notifications to users in a selected geographic area.

Over 90 percent of physicians and over 85% of nurses own a smartphone and are using them as a valuable tool to provide patient services.

Mbps stands for _____ .

GPS receivers receive the signals from four GPS satellites to determine a highly accurate location of the receiver, even though just three signals are sufficient.

Briefly describe a general model of telecommunications.

Modems convert analog signals to digital signals for transmission over a network.