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

wireless lan
extended lan
mobile computing
wireless pan

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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

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
What are the four techniques used by wireless networks
- infrared transmission - laser transmission - narrowband (single-frequency) radio transmission - spread spectrum radio transmission
26
used in wireless LANs; this operates by using an infrared light beam to carry the data between devices
infrared transmission
27
this system need to generate very strong signals because weak transmission signals are susceptible to interference from light sources such as windows
infrared transmission
28
true or false: many printers today are preconfigured to accept infrared signals
true
29
this stands for Light Amplification by Stimulated Emission of Radiation and it describes the physical process by which light is amplified
LASER
30
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
laser technology
31
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
narrowband (single-frequency) radio transmission
32
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)
true
33
this radio transmission technique broadcasts signals over a range of frequencies, where the available frequencies are divided into channels or hops
spread spectrum radio transmission
34
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
spread spectrum radio transmission
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