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Computer Information Systems > Chapter 7 > Flashcards

Chapter 7 Flashcards

0
Q

What is a local area network (LAN)?

A

Connects a group of computers in close proximity, such as in an office building, school, or home.

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1
Q

What are the three primary network types?

A
  1. Local area network (LAN)
  2. Wide area network (WAN)
  3. Metropolitan area network (MAN)
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2
Q

What is a wide area network (WAN)?

A

Spans a large geographic areas such as a state, province, or country. (e.g. Internet)

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3
Q

What is a metropolitan area network (MAN)?

A

A large computer network usually spanning a city.

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4
Q

What are National Service Providers (NSPs)?

A

Private companies that own and maintain the worldwide backbone that supports the Internet.

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5
Q

What are Network Access Points (NAPs)?

A

Traffic exchange points in the routing hierarchy of the Internet that connects NSPs.

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6
Q

What are Regional Service Providers (RSPs)?

A

Offer Internet service by connecting to NSPs, but they also can connect directly to each other.

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7
Q

What is bandwidth?

A

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)
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8
Q

What is Transmission Control Protocol/Internet Protocol (TCP/IP)?

A

Provides the technical foundation for the public Internet as well as for large numbers of private networks.

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9
Q

What is network convergence?

A

The efficient coexistence of telephone, video, and data communication within a single network, offering convenience and flexibility not possible with separate infrastructures.

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10
Q

What are the four types of wireless communication network?

A
  1. Personal area networks (PANs)
  2. Wireless LAN (WLAN)
  3. Wireless MAN (WMAN)
  4. Wireless WAN (WWAN)
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11
Q

What are personal area networks (PANs)?

A

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)

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12
Q

What is a Wireless LAN (WLAN)?

A

A local area network that uses radio signals to transmit and receive data over distances of a few hundred feet. (i.e. Wi-Fi)

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13
Q

What is Wireless fidelity (Wi-Fi)?

A

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.

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14
Q

What is Wireless MAN (WMAN)?

A

A metropolitan area network that uses radio signals to transmit and receive data.

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15
Q

What is Wireless WAN (WWAN)?

A

A wide area network that uses radio signals to transmit and receive data.

16
Q

What are some areas experiencing tremendous growth using wireless technologies?

A
  1. Radio-Frequency Identification (RFID)
  2. Global Positioning Systems (GPS)
  3. Geographic Information Systems (GIS)
17
Q

What is Radio Frequency Identification (RFID)?

A

Uses electronic tags and labels to identify objects wirelessly over short distances.

18
Q

What is the Global Positioning System (GPS)?

A

A satellite-based navigation system providing extremely accurate position, time, and speed information.

19
Q

What is Geographic Information Systems (GIS)?

A

Consists of hardware, software, and data that provide location information for display on a multidimensional map.

20
Q

What are Location Based Services (LBS)?

A

Applications that use location information to provide a service.

21
Q

What is the difference between TCP and IP?

A

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.

22
Q

What is an Internet service provider (ISP)?

A

specializes in providing management, support, and maintenance to a network.

23
Q

What is the Internet?

A

A hierarchal structure linking different levels of service providers, whose millions of devices, LANs, WANs, and MANs supply all the interconnections.

Computer Information Systems (9 decks)

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