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Wireless EXAM ACE IT > Topologies > Flashcards

Topologies Flashcards

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1
Q

List of basic topologies?

A

WWAN
WMAN
WPAN
WLAN

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2
Q

What is WWAN?

A

Wireless Wide Area Network

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3
Q

What is WMAN?

A

Wireless Metropolitan Area Network

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4
Q

What is WPAN?

A

Wireless Personal Area Network

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5
Q

What is WLAN?

A

Wireless Local Area Network

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6
Q

Describe WWLAN

A 
Covers a vast geographical area
Cellular technologies
2G GSM Global System Mobile
CDMA (Code Division Multiple Access)
3G WCDMA 
HSP
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7
Q

Describe WMAN?

A

used usually in the city

has a technology called WiMax

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8
Q

What is WiMax?

A

Worldwide Interoperability for Microwave Access

Its a technology standard for long-range wireless networking

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9
Q

Pros of WiMax?

A

Low cost

Installed faster

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10
Q

Cons of WiMax?

A

The further the slower

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11
Q

Describe WPAN?

A

Used within close proximity
Examples, Bluettooth, ZigBee infra red
Low bandwidth and throughput is normal

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12
Q

Describe WLAN?

A

Provides networking for a building or campus

Multiple access points connected by a wired network backbone

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13
Q

What are the three service sets of 802.11-2007

A

Basic Service Set BSS
Extended Service Set ESS
Independent Basic Service Set IBSS

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14
Q

Difference between SSID and BSSID?

A

SSID service set ID is the name of the network.

Within each WLAN there is multiple access points therefore BSSID must be used

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15
Q

Difference between BSS and ESS

A

BSS consists of group of computers and one AP.

ESS consists of more than one AP.

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16
Q

Types of Access Points?

A

Autonomous AP - Standalone Device
Cooperateive AP - ap with switch like intelligence and that work together
Controller-Based AP - ap that communicates with central controller.

17
Q

What does MSDU stand for?

A

Mac service data unit

Upper layer information contained the wireless data

18
Q

What does DSS stand for?

A

Distribution System Services

A switch like intelligence in AP that forwards the MSDU

19
Q

What is a client station?

A

Radio card that is not a part of AP

20
Q

What does it mean client station associated?

A

When a client station has a layer 2 connection with an access point

21
Q

What is IS?

A

Integration Service

enables delivery of MSDUs between DS and non 802.11 LAN via a portal

22
Q

What does DS have?

A

Distribution System Medium

Distribution System Services

23
Q

Examples of WDS?

A

Bridges repeaters mesh networks

24
Q

What is BSA?

A

Physical area of covered provided by an ap.

25
Q

ESS with Seamless Roaming

A

Always connected

26
Q

ESS with Nomantic Roaming

A

Mobility between disjointed cells

27
Q

ESS Colocation

A

When deploying an ESS with multiple AP with total or almost total overlap of coverage.
Intended to increase client capacity

28
Q

Define IBSS

A

Peer to peer network
Doesnt need an AP
Communicate through the same channel

29
Q

define MBSS

A

802.11s - 2011 amendment
uses wireless distribution of network traffic
Mesh Points use Hybrid Wireless Mesh Protocol
Acts as AP in BSS

30
Q

Client Modes?

A

Infrastructure

Ad Hoc

31
Q

What is an infrastructure client mode?

A

Allows communcations via an AP

Client can participate in a BSS or ESS

32
Q

What is adhoc client mode?

A

Communicate without an AP

Participate in IBSS

33
Q

What is Distribution System?

A

Interconnects a set of bss via integrated LAN creating ess

Wireless EXAM ACE IT (5 decks)

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