Intro To Wireless Lans Ch. 6

Front 1

How many differnet service sets are available in IEEE 802.11

Back 1

3

Front 2

A(n)_____consists of one or more stations that are served by a single access point

Back 2

Basic service sets (BSS)

Front 3

Name 3 Service that does not use an AP

Back 3

1.) Ad hoc

2.) Peer-to-peer

3.) Independent Basic Service Set

Front 4

A(n)_____describes a specific unit of data that has been passed down from a higher OSI layer to a lower layer but has not yet been encapsulated by the lower layer

Back 4

Service Data Unit (SDU)

Front 5

What is a restriction that applies to A-MPDU

Back 5

All of the A-MPDU within the single A-MPDU must be addressed to the same receiver

Front 6

Name 3 options for addressing difference in the frame size

Back 6

1.) lowest common denominator

2.) jumbo frames

3.) fragmentation

Front 7

In____made an IEEE 802.11a/b/g device will not be able to access the AP

Back 7

Greenfield

Front 8

____frames are used to set up initial communications between device and access point

Back 8

management

Front 9

____is when AP transmit its beacon frame and a station is looking for those frames

Back 9

Passive scanning

Front 10

What happens if a probe request frame contains a null value

Back 10

All APs will respond

Front 11

____is the process in which an AP accepts a station into WLAN

Back 11

Autentication

Front 12

What uses a challege text

Back 12

Shared key authenication

Front 13

Name the default access method doe IEEE 802.11 WLANs

Back 13

Carrier Sense Multiple Access Collision Avoidence (CSMA/CA)

Front 14

What is true regarding block acknowledgement

Back 14

1.) Applies to IEEE 802.11a

2.) supports Multiple MPDUs in an A-MPDU

3.) Receiving node sends a block ACK only acknowleding the correct MPDU

Front 15

_____reserves the medium for a period of time and hundles the hidden node problem

Back 15

Request to send/clear to send (RTS/CTS)

Front 16

What is used when 802.11g devices are mixed with 802.11b devices together

Back 16

CTS-To-self

Front 17

What interframe spaces is used for immediate response actions such as ACK and has the highest levels of priority

Back 17

Short IFS (SIFS)

Front 18

_____is an optional polling mechanism

Back 18

point coordination function (PCF)

Front 19

The hybrid coordination funtion (HCF) allows for different types of wireless traffic to be given different levels of_____

Back 19

priority

Front 20

Name 3 enhanced distributed channel Access (EDCA) access category (AC)

Back 20

1.) Background (AC_CK)

2.) Best effort (AC_BE)

3.) Video (AC_VI)