Exam 7: Computer Networks

-The accompanying figure shows a coaxial cable, in which pairs of copper wires are insulated with a plastic coating and twisted together.

____ is the use of networking technology to provide medical information and services.

Because geosynchronous satellites are so close above the surface of the earth, there is no delay while signals travel from earth, to the satellite, and back to earth again.

With telesurgery, at least one of the surgeons performs the operation by controlling the robot remotely, such as over the Internet or another network. _________________________

Transferring data from a client PC to a server is referred to as downloading.

In a bus network, all the networked devices connect to a central device (such as a server or a switch) through which all network transmissions are sent.

Monitoring systems may also use ____, which are devices that respond to a stimulus (such as heat, light, or pressure) and generate an electrical signal that can be measured or interpreted.

A personal area network (PAN) is a network of personal devices for one individual, such as his or her portable computer, mobile phone, and printer.

The RedStar system built into many GM cars uses GPS to locate vehicles when the occupant activates the service or when sensors indicate that the car was involved in an accident. _________________________

Most networking media send data using analog signals. _________________________

With ____, data is sent one bit at a time, one after the other along a single path.

PC conferencing is the use of networking technology to conduct real-time, face-to-face meetings between individuals physically located in different places.

A(n) small area network (SAN) is a network that covers a relatively small geographical area, such as a home, office building, or school. _________________________

Because there may be many Bluetooth devices within range, up to 10 individual Bluetooth networks (called piconets) can be in place within the same physical area at one time. _________________________

____ transmission is relatively uncommon in data transmissions since most devices that are mainly one-directional, such as a printer, can still transmit error messages and other data back to the computer.

A(n) ____________________ is a private network, such as a company LAN, that is set up by an organization for use by its employees

When parallel transmission is used, the message is sent at least one byte at one time with each bit in the byte taking a separate path.

Wi-Fi is a wireless standard that is designed for very short-range (10 meters, approximately 33 feet, or less) connections. _________________________

The ____________________ is a satellite-based location and navigation system.

Describe the star network topology.