Wireless Network

Question 1

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

Answer 1

wireless network

Question 2

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

Answer 2

True

Question 3

what is the main advantage of wireless networking

Answer 3

flexibility

Question 4

provide examples where wireless network is useful

Answer 4

• busy locations
• isolated areas and buildings
• departments that change frequently
• historic buildings

Question 5

what are the four types of wireless networks

Answer 5

wireless lan
extended lan
mobile computing
wireless pan

Question 6

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

Answer 6

LAN

Question 7

what is the most commonly known wireless LAN

Answer 7

Wi-Fi

Question 8

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

Answer 8

personal area network (PAN)

Question 9

what is the most commonly known wireless PAN

Answer 9

bluetooth

Question 10

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

Answer 10

metropolitan area network (MAN)

Question 11

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

Answer 11

WAN

Question 12

True or false: The internet is a WAN

Answer 12

True

Question 13

What are the most commonly known wireless WANs

Answer 13

Cellular services

Question 14

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

Answer 14

extended LAN

Question 15

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

Answer 15

wireless bridge

Question 16

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

Answer 16

mobile computing

Question 17

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

Answer 17

mobile computing

Question 18

this breaks a transmission into packets

Answer 18

packet radio transmission

Question 19

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

Answer 19

true

Question 20

cellular networks are also called

Answer 20

cellular digital packet data (cdpd)

Question 21

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

Answer 21

cellular networks

Question 22

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

Answer 22

microwave system

Question 23

most widely used long distance transmission method in the US

Answer 23

microwave transmission

Question 24

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

Answer 24

microwave system

Question 25

What are the four techniques used by wireless networks

Answer 25

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

Question 26

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

Answer 26

infrared transmission

Question 27

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

Answer 27

infrared transmission

Question 28

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

Answer 28

true

Question 29

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

Answer 29

LASER

Question 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

Answer 30

laser technology

Question 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

Answer 31

narrowband (single-frequency) radio transmission

Question 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)

Answer 32

true

Question 33

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

Answer 33

spread spectrum radio transmission

Question 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

Answer 34

spread spectrum radio transmission