Chapter 7 Flashcards
What is a local area network (LAN)?
Connects a group of computers in close proximity, such as in an office building, school, or home.
What are the three primary network types?
- Local area network (LAN)
- Wide area network (WAN)
- Metropolitan area network (MAN)
What is a wide area network (WAN)?
Spans a large geographic areas such as a state, province, or country. (e.g. Internet)
What is a metropolitan area network (MAN)?
A large computer network usually spanning a city.
What are National Service Providers (NSPs)?
Private companies that own and maintain the worldwide backbone that supports the Internet.
What are Network Access Points (NAPs)?
Traffic exchange points in the routing hierarchy of the Internet that connects NSPs.
What are Regional Service Providers (RSPs)?
Offer Internet service by connecting to NSPs, but they also can connect directly to each other.
What is bandwidth?
This is how we measure network performance. The maximum amount of data that can pass from one point to another in a unit of time. Measured in terms of a bit rate, the number of bits transferred or received per unit of time.
- bits per second (bps)
- bytes per second (Bps)
What is Transmission Control Protocol/Internet Protocol (TCP/IP)?
Provides the technical foundation for the public Internet as well as for large numbers of private networks.
What is network convergence?
The efficient coexistence of telephone, video, and data communication within a single network, offering convenience and flexibility not possible with separate infrastructures.
What are the four types of wireless communication network?
- Personal area networks (PANs)
- Wireless LAN (WLAN)
- Wireless MAN (WMAN)
- Wireless WAN (WWAN)
What are personal area networks (PANs)?
Provide communication over a short distance that is intended for use with devices that are owned and operated by a single user. (i.e. Bluetooth)
What is a Wireless LAN (WLAN)?
A local area network that uses radio signals to transmit and receive data over distances of a few hundred feet. (i.e. Wi-Fi)
What is Wireless fidelity (Wi-Fi)?
A means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves.
What is Wireless MAN (WMAN)?
A metropolitan area network that uses radio signals to transmit and receive data.
What is Wireless WAN (WWAN)?
A wide area network that uses radio signals to transmit and receive data.
What are some areas experiencing tremendous growth using wireless technologies?
- Radio-Frequency Identification (RFID)
- Global Positioning Systems (GPS)
- Geographic Information Systems (GIS)
What is Radio Frequency Identification (RFID)?
Uses electronic tags and labels to identify objects wirelessly over short distances.
What is the Global Positioning System (GPS)?
A satellite-based navigation system providing extremely accurate position, time, and speed information.
What is Geographic Information Systems (GIS)?
Consists of hardware, software, and data that provide location information for display on a multidimensional map.
What are Location Based Services (LBS)?
Applications that use location information to provide a service.
What is the difference between TCP and IP?
TCP verifies the correct delivery of data because data can become corrupt when traveling over a network.
IP verifies the data are sent to the correct IP address, numbers represented by four strings of numbers ranging from 0 to 255 separated by periods.
What is an Internet service provider (ISP)?
specializes in providing management, support, and maintenance to a network.
What is the Internet?
A hierarchal structure linking different levels of service providers, whose millions of devices, LANs, WANs, and MANs supply all the interconnections.
