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COMPUTER NETWORKING > Wireless Network > Flashcards

Wireless Network Flashcards

1
Q

This refers to a computer network that makes use of Radio Frequency connections between nodes in the network

A

wireless network

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2
Q

True or false: Wireless media provide temporary connections to an existing cabled network

A

True

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3
Q

what is the main advantage of wireless networking

A

flexibility

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4
Q

provide examples where wireless network is useful

A
  • busy locations
  • isolated areas and
    buildings
    -departments that change frequently
  • historic buildings
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5
Q

what are the four types of wireless networks

A

local area network

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6
Q

network that exists at a single site. it can be used to connect a variety of components, such as computers, printers, and data storage devices

A

LAN

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7
Q

what is the most commonly known wireless LAN

A

Wi-Fi

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8
Q

consists of a network centralized around the devices of a single person in a single location; common inside hoes and small office buildings

A

personal area network (PAN)

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9
Q

what is the most commonly known wireless PAN

A

bluetooth

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10
Q

a computer network that spans across a city, small geographical area, or business or college campus

A

metropolitan area network (MAN)

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11
Q

this covers a very large area, like an entire city, state, or country. it can contain smaller networks, including LANs and MANs.

A

WAN

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12
Q

True or false: The internet is a WAN

A

True

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13
Q

What are the most commonly known wireless WANs

A

Cellular services

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14
Q

this makes use of a wireless bridge that connects two pre-existing networks

A

extended LAN

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15
Q

it is a component that offers an easy way to link buildings without using cable

A

wireless bridge

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16
Q

this is also known as cellular technology incorporating wireless adapters using cellular telephone technology to connect portable computers with the cables network

A

mobile computing

17
Q

uses public carriers, such as long distance telephone companies, along with local telephone companies and their public services to transmit and receive signals using: packet-radio communication, cellular networks and satellite stations

A

mobile computing

18
Q

this breaks a transmission into packets

A

packet radio transmission

19
Q

True or false: in packet radio transmission, packets are linked up to a satellite that broadcasts them and only devices with the correct address can receive the broadcast packets

A

true

20
Q

cellular networks are also called

A

cellular digital packet data (cdpd)

21
Q

offers computer data transmissions over existing analog voice networks between voice calls when the system is not busy; this is very fast technology that is reliable enough for real-time transmission

A

cellular networks

22
Q

good choice for interconnecting buildings in small, short-distance systems such as those on a campus or in an industrial park

A

microwave system

23
Q

most widely used long distance transmission method in the US

A

microwave transmission

24
Q

excellent for communicating between two line-of-sight such as satellite-to-ground links, between two buildings, and across large, flat open areas, such as bodies of water or deserts

A

microwave system

25
Q

What are the four techniques used by wireless networks

A
  • infrared transmission
  • laser transmission
    -narrowband (single-frequency) radio
    -transmission
  • spread spectrum radio transmission
26
Q

used in wireless LANs; this operates by using an infrared light beam to carry the data between devices

A

infrared transmission

27
Q

this system need to generate very strong signals because weak transmission signals are susceptible to interference from light sources such as windows

A

infrared transmission

28
Q

true or false: many printers today are preconfigured to accept infrared signals

A

true

29
Q

this stands for Light Amplification by Stimulated Emission of Radiation and it describes the physical process by which light is amplified

A

LASER

30
Q

similar to infrared technology in that it requires a direct line of sight and any person or thing that breaks the laser beam will block the transmission

A

laser technology

31
Q

this transmission technique is similar to broadcasting from a radio station, where the user tunes both the transmitted and the receiver to a certain frequency

A

narrowband (single-frequency) radio transmission

32
Q

true or false: narrowband radio transmission does not require line-of-sight focusing because the broadcast range is 3000 meters, but it’s slow (4.8 mbps range)

A

true

33
Q

this radio transmission technique broadcasts signals over a range of frequencies, where the available frequencies are divided into channels or hops

A

spread spectrum radio transmission

34
Q

the adapters for spectrum are tuned in to a specific hop at a predetermined period of time and then switches to the next hop; all the computers in the network are synchronized to the hop timing, which provides built-in security

A

spread spectrum radio transmission

COMPUTER NETWORKING (4 decks)

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