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Block 1 > Unit 9 wireless networking > Flashcards

Unit 9 wireless networking Flashcards

1
Q

joins two or more devices through
unbound radio or light wave

A

Wireless network

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2
Q

device that creates wireless local area network
usually in office or large building

A

Access point

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3
Q

The most important element in wireless network
 Connects to wired router or switch via an Ethernet cable, and
transmits Wi-Fi signal to designated area

A

Access Point

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4
Q

: device used in LANs and WANs that performs
specific function

A

Network node

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5
Q

Each node needs MAC address for each

A

network interface card (NIC)

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6
Q

collection of wireless networking devices with
same parameters

A

Service set

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7
Q

Identifier (name) that tells you
which service set (or network) to join

A

Service set identifier (SSID):

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8
Q

Covers wireless networks over wide area
 Achieved by wirelessly connecting coverage cells to provide services
to expanded geographical location
 Typically used to cater to smartphone market through cellular
service providers
 Coverage of large service areas such as cities, regions or even
countries

A

Wireless Wide Area Network (WWAN)

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9
Q

Commonly deployed WWAN technologies include

A

GSM/GPRS/EDGE,
CDMA2000, UMTS/HSDPA and CDMA EV-DO

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10
Q

 Different from normal Wi-Fi connection; individuals can
enjoy wireless services through any

A

hotspot

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11
Q

Sometimes known as LAWN (Local Area Wireless Network)
 Wireless computer network that links two or more devices using
wireless distribution method within a limited area such as home,
school, computer laboratory, or office building

A

Wireless Local Area Network (WLAN)

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12
Q

Can be constructed through any kind of wireless network protocol,
but most common connection is through Wi-Fi for distances up to
100 meters

A

Wireless Local Area Network (WLAN)

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13
Q

Caters to devices such as laptops, mobile phones, tablets
computers, gaming console, internet audio system, and internetpowered home devices and appliances

A

Wireless Local Area Network (WLAN)

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14
Q

 Need to rely on repeaters or signal boosters to cover vast
geographical location

A

Wireless Local Area Network (WLAN)

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15
Q

Client devices use this name to identify and join wireless network

A

Single Access Point WLANs

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16
Q

Name of Wi-Fi network you look to join your device to

A

Single Access Point WLANs

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17
Q

Identify access points and their clients. Packets bound for devices within
WLAN need to go to correct destination.

A

Basic Service Set Identifier (BSSID)

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18
Q

network that forwards traffic from node to node, has no
access point; network generates 48-bit string of numbers that looks and
functions like MAC address and that BSSID goes in every packet

A

Ad-hoc network

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19
Q

Consists of all BSSs in network

A

Extended Service Set Identifier (ESSID)

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20
Q

Access points in Extended Service Set (ESS) connected by

A

centralized
distribution system

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21
Q

Provides wireless connection to devices that surround an
individual’s personal space typically 10 meters

A

Wireless Personal Area Network (WPAN)

22
Q

Examples of Wireless Personal Area Network (WPAN)

A

Infrared and Bluetooth

23
Q

Consumes less power, provides short-range communication, is
low cost, and provides connected communication of various
devices in people’s personal space

A

Wireless Personal Area Network (WPAN)

24
Q

 Wireless network intended to cover ranges around 31 miles or 50
kilometers

A

Wireless Metropolitan Area Network (WMAN)

25
Q

 Allows multiple locations or buildings to stay connected within any
metropolitan area

A

Wireless Metropolitan Area Network (WMAN)

26
Q

Relies on strong radio waves or infrared light versus cables to
transmit data
 Often used as backup for wired networks
 Main goal to provide wireless connection between two independent
and fully-functional LAN nodes
 Downside is that it is easily attacked because it covers wide range
of geographical locations

A

Wireless Metropolitan Area Network (WMAN)

27
Q

r transmits Wi-Fi signal but also contains ports
connected to any digital subscriber line (DSL) modem or cable
through Ethernet cables

A

Hybrid Network

28
Q

means something improvised or makeshift device;
impromptu, on-demand network that works from device to device

A

Ad hoc

29
Q

Does not rely on wireless router or central Access Point to transmit
data from one point to another

A

Wireless Ad Hoc Network

30
Q

 Can sustain itself without any existing infrastructure; decentralized
and regarded as peer-to-peer network

A

Wireless Ad Hoc Network

31
Q

Wireless Advantages

A

 Increased mobility and collaboration
 Roam without losing connection
 Connect hard-to-reach areas

32
Q

Wireless Disadvantages

A

speed
reliability
security
reduced management control

33
Q

is technology based on IEEE 802.11 suite of standards that
uses radio frequencies (RF) to extend wired Ethernet-based LANs to
Wi-Fi enabled devices

A

Wi-Fi

34
Q

is a network that allows devices to connect
and communicate wirelessly

A

WLAN, or wireless LAN

35
Q

devices on a WLAN communicate via

A

Wi-Fi

36
Q

uses wireless communication medium instead of wired
connection

A

Wireless Personal Area
Networks

37
Q

Range depends on wireless router’s capabilities, access point
or the device itself, but usually restricted to house or small
office

A

Wireless Personal Area
Networks

38
Q

IEEE 802.15.1

A

Bluetooth

39
Q

Global 2.4 GHz PAN for short-range wireless communication

A

IEEE 802.15.1 Bluetooth

40
Q

Standard for short-range wireless interconnection of mobile phones,
computers, and other electronic devices

A

IEEE 802.15.1 Bluetooth

41
Q

 2.4 GHz mesh LAN protocol
 Developed as IEEE 802.15.4-based specification for suite of highlevel communication protocols used to create PANs with small, lowpower digital radios

A

IEEE 802.15.4 ZigBee

42
Q

Transmit data over long distances by passing through mesh network
of intermediate devices to reach more distant ones

A

IEEE 802.15.4 ZigBee

43
Q

IEEE 802.15.4 ZigBee

A
  • IEEE 802.15.4 ZigBee
44
Q

Form of visual light communication that uses light waves from LEDs
for high-speed wireless communication.

A

IEEE 802.15.7 Li-Fi

45
Q

 Exchange data quickly and securely at a much lower power level
compared to Wi-Fi

A

IEEE 802.15.7 Li-Fi

46
Q

Fewer interference issues than RF technology, making it ideal for
dense environments where Wi-Fi may fall short

A

IEEE 802.15.7 Li-Fi

47
Q

 Developed separately from Wi-Fi
 Designed for long-range networking (spanning miles or kilometers) as
opposed to local area wireless networking

A

IEEE 802.16 WiMax

48
Q

Carrier Sense Multiple Access/Collision Avoidance
 Network contention protocol that listens to network in order to avoid
collisions,
 Unlike CSMA/CD that deals with network transmissions once collisions
have been detected.
 Internationally standardized in IEEE 802.11

A

CSMA/CA

49
Q

Have all software required to manage WLAN processes with no
need for additional controllers or switches
 Original type of access point and ranged from one to ten access
points across network

A

Autonomous Access Point

50
Q

Combination of multiple devices; access point, regular Ethernet
switch, router and sometimes modem

A

Multifunction Access Point

51
Q

 Doesn’t make any forwarding decision
oUpon receiving frame from connected device, instead of forwarding to
destination device, forwards frame to WLC
oWLC, based on the security configuration, makes decision whether received
frame should be forwarded or discarded
oIf forwarded, sends frame to LWAP, to which destination device is
connected. LWAP sends frame to destination device

A

Lightweight Access Point

52
Q

Controlled Access Point
 Works as client of Wireless LAN Controller (WLC)

A

Lightweight Access Point

Block 1 (9 decks)

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