Exam 7: Computer Networks

In ____ transmission,data can move in both directions at the same time,such as with a telephone.

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

The ____ network consists of 24 Department of Defense satellites that are used for location and navigation purposes.

____ are earth-based stations that can transmit microwave signals directly to each other over distances of up to about 30 miles.

A(n)computer network is a collection of computers and other hardware devices connected together so that network users can share hardware,software,and data,as well as electronically communicate with each other.

In general,Wi-Fi is designed for medium-range data transfers-typically between 100 and 300 feet both indoors and outdoors.

Mobile phones are also called wireless phones.

A global positioning system (GPS)consists of ____ and a group of GPS satellites.

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

List some common uses for computer networks.

TCP/IP uses a technique called packet switching to transmit data over the Internet.

Case 7-2 Gabrielle is the network administrator at a medium-sized company.One of her responsibilities is to purchase network devices to maintain the company network. -Gabrielle is planning to connect selected devices to the network wirelessly with a wireless ____.

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

____ 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.

In a ____ network,there are a number of different connections between the devices on the network so that data can take any of several possible paths from source to destination.

TCP/IP is the protocol used for transferring data over the Internet.

____ was originally developed to carry a large number of high-speed video transmissions at one time,such as to deliver cable TV service.

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

The most common type of mobile phone is the satellite phone.

Case 7-1 Robert is a medical writer for a pharmaceutical company.The company allows Robert to work from home. -Every day,Robert uses ____ to have a real-time,face-to-face meeting with his boss.